Tetrahedron

Papers
(The median citation count of Tetrahedron is 1. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-01-01 to 2026-01-01.)
ArticleCitations
Graphical abstract TOC99
N-Bromo-N-fuorobenzenesulfonylamide (BFBSA) – A newly developed reagent for the bromination of (Het)arenes, drugs and natural products under mild conditions68
A brief encounter on steroids between Robinson and Woodward in 195168
Mild and practical synthesis of 5-thio-d-glucopyranose and its pentaacetate derivatives64
The chemistry of disorazoles and structure-activity relationships: An update55
Traversing the chiral pool potential of carvone in total synthesis of natural products48
Synthesis and biological evaluation of trehalose-based Bi-aryl derivatives as C-type lectin ligands45
Concise stereoselective and stereodivergent syntheses of (±)-melicolones A and B44
Towards the total synthesis of 9,11-secosterol: Linking A,B- and D-rings with Michael addition to sulfone-activated cyclopentenone42
A new chemodosimeter for p-nitroaniline based on bis-benzimidazolium salt42
Graphical abstract TOC40
Graphical abstract TOC37
A flexible enantioselective approach to 2,5-disubstituted cis-decahydroquinolines34
Asymmetric hydrogenation and transfer hydrogenation33
Graphical abstract TOC31
Sustainable approaches in the catalytic synthesis of optically active and inactive diaryl sulfoxides31
An access to 1H-cyclopenta[b]pyridine-4,5-diones via condensation of 6-nitro-1,2-o-quinone with arylamines and acetone30
I2-DMSO mediated N1/C5 difunctionalization of anthranils with aryl methyl ketones: A facile access to multicarbonyl compounds28
Difluoroboron complexes of peripheral β-diketonates in cyclopheophorbides: Their syntheses and optical properties27
Tethered aza-Wacker cyclization reactions with unusual N-alkoxy carbamates27
Rational development of dual-channel fluorescent probe for detecting SO2 and H2S without signal crosstalk in Chinese herbal medicines and living organisms27
Copper-catalyzed three-component reaction to construct thietane ring using elemental sulfur26
Catalytic merits of Ni0.6Zn0.4Fe2O4/f-MWCNTS–CS–Asp/Ni2+ for tailoring 1H-benzo [4,5] imidazo [1,2-b] [1,2,4]triazepine motifs through green domino strategy26
Synthesis of mono- and tetra-arylated tetrathienylethene via direct palladium-catalyzed C–H arylation: A useful method for tuning luminescent properties of arylated tetrathienylethenes26
Graphical abstract TOC25
The application of azoarenes in the synthesis of nitrogen-containing heterocycles25
Editorial Board25
Studies toward the synthesis of yaretol: An unexpected rearrangement en route to the tricyclic core25
TBAT-catalyzed dioxasilinane formation from beta-hydroxy ketones24
Development of a scalable route to a complex cyclobutane linchpin via a diastereoselective CuI-catalyzed vinylation of a cyclobutanyl aldehyde24
Regio- and stereoselective synthesis of bromoalkenes by homolytic hydrobromination of alkynes with hydrogen bromide23
Recent total syntheses of anthraquinone-based natural products23
Modular and efficient synthesis of a poly (propylene imine) (PPI) dendron applied to acid-sensitive doxorubicin conjugation22
Recent advances in atroposelective synthesis of axially chiral heterobiaryl featuring indole frameworks22
Asymmetric total synthesis of three components of the sex pheromone of the apple leafminer, Lyonetia prunifoliella22
Synthesis and cytotoxic activity of new α-pinene-based cineol-like compounds21
Palladium-catalyzed ring-opening/defluorinative coupling of gem-DFCPs with pyranones/pyridones21
Graphical abstract TOC21
Molecular networking-based discovery of new polyketides from the deep-sea-derived fungus Talaromyces indigoticus FS68821
Viewing the Ritter reaction through single electron transfer lenses21
Visible light promoted synthesis of 2-amino sugar analogues from glycals and N-aminopyridinium salts21
Synthesis of two optically active V-shaped molecules: Investigating the correlation between the stacking angle and chiroptical properties20
Synthesis of novel peptide-based tetracarboxylate ligands for metal organic framework (MOF) systems and applications20
3-Fluorooxindoles from indolin-2-ones by Selectfluor20
Synthesis of Bufalin and Digitoxigenin Derivatives20
Mechanochemical cyclization of push-pull enamines with propargyl alcohols20
Iodine(III) reagents for the aromatic functionalization with inorganic groups19
BODIPY-derived fluorescent probes for targeting and tracking lipid droplets dynamics19
Bumps in the road: R. B. Woodward and his years before tenure19
Synthesis of psychotropic alkaloids from Galbulimima19
Application of post-Ugi transformation strategies towards the synthesis and functionalization of 2,5-Diketopiperazines19
Graphical abstract TOC18
Graphical abstract TOC18
Editorial Board18
Editorial Board18
Bidentate deltamide hydrogen bond donor catalyzed cycloaddition of carbon dioxide into epoxide18
Graphical abstract TOC17
Rearrangement of protected epoxy-alcohols into tetrahydrofuran derivatives: The protecting group matters!17
Graphical abstract TOC17
From blue to red. Reaching the full visible spectrum with a single fluorophore: BODIPY17
Graphical abstract Toc Contents continued17
Applications of Claisen condensations in total synthesis of natural products. An old reaction, a new perspective17
An AIE fluorescent supramolecular polymer constructed by host-guest interactions among pillar[5]arenes/sulfonium salts for Pd2+ detection16
Graphical abstract TOC16
Electrochemical strategies for selective carbohydrate scaffold modification16
Total synthesis of the falcarinol-type oxylipin (3S)-16,17-didehydrofalcarinol and its activity against Leishmania mexicana16
Graphical Abstract TOC continued16
Graphical abstract TOC16
Graphical abstract TOC16
Graphical abstract TOC16
Graphical abstract TOC continued16
Visible-light-driven synthesis of benzoxepine derivatives from aromatic diazo compounds16
Editorial for the special issue commemorating the 90th birthday of Dr A V Rama Rao16
Synthesis and characterization of oligonucleotides containing 2′-O,4′-C-methyleneoxy-bridged 5-methyluridine with an unsubstituted bridge15
Microwave assisted synthesis of 2,3-dihydro-4H-benzo[4,5]thiazolo[3,2-a]furo[2,3-d] pyrimidin-4-ones by radical addition of 2-hydroxy-4H-benzo[4,5]thiazolo[3,2-a] pyrimidin-4-ones to various conjugate15
An NAD+ with dually modified adenine for labeling ADP-ribosylation-specific proteins15
Structural assessment of novel spiro-naphthalene-1.2'- [1,3,4]oxadiazol-4-ones prepared under batch and flow chemistry with a concise antifungal and anti(myco)bacterial activity15
Light-promoted AIBN-catalyzed oxidative cleavage of aryl olefins to aryl ketones15
Recent advancement in the synthesis and applications of N-acyl benzotriazoles in organic synthesis15
Visible-light-promoted one-pot synthesis of β-keto sulfones from aryldiazo tetrafluoroborate salts via aerobic multicomponent reaction15
High efficient synthesis of HMX from DPT using deep eutectic catalyst15
I2/DMSO-mediated C(sp2)-S bond formation between heterocyclic enamines and triethylammonium thiolates15
Facile synthesis of spiro-heterocycles through one-pot multicomponent [3 + 3] cross 1,3-dipolar cycloaddition reactions15
Understanding selectivity of nucleophilic addition to β-formyl-α-haloenoates: A synthetic and theoretical investigation15
Unusual behavior of 2,2'-(Quinolin-8-ylmethylene)bis(1H-indene-1,3(2H)-dione): Gear-like rotation, merry-go-round tautomerization, reversible fragmentation and intramolecular cyclization14
Structural revisions of macrocyclic ellagitannin dimers bridged by two hexahydroxydiphenoyl groups14
A green electrochemical synthesis in the Aloysia citrodora leaf extract substrate14
UV-induced E/Z isomerization of the electron-rich pyrrole ring containing diketoenols: Theoretical and experimental study14
Carboxylated pillar[5]arene cavity accommodates organic cations in the host-guest complexes14
Design and synthesis of sinomenine D-ring tetrazole-isoxazole and tetrazole-triazole derivatives via 1, 3-dipolar cycloaddition reaction14
A near-infrared fluorescent off-on probe with large Stokes shift for sensing hydrazine in vitro and in vivo14
Oxa-phenalene [b]-fused BODIPY dyes: Synthesis, structures, and photophysical properties13
Asymmetric cycloadditions, diels-alder and cyclopropanation transformations, with (S)-Benzyl N-2-trifluoroacetamidoacrylyl oxazolidinone13
Graphical abstract TOC13
Synthesis of organoselenium compounds using electrochemical and photochemical methods as novel approaches in organic chemistry13
Diterpenoids from the aril of Torreya grandis and their cytotoxicity13
Recent advances in the syntheses and reactions of biologically promising β-lactam derivatives13
18O kinetic isotope effect evidence for a concerted [3+1] cycloaddition in phosphetane-catalyzed reductive N-arylation of nitroarenes13
Photochemical generation of ketenes from phenanthrene-based cyclobutanones13
Aciculitin D, a cytotoxic heterodetic cyclic peptide from a Poecillastra sp. marine sponge13
Identification and strategy for minimization of impurities in the synthesis of Relugolix13
Graphical abstract TOC13
Exploring azetidine containing heterocycles: From green synthesis to applications13
Synthesis of novel 2-alkyl and 2-aryl 4-phosphorylated oxazolines from dimethyl (±)-phosphoserinate13
Cp∗Co(III)-catalyzed C–H amidation of 2-arylimidazo[1,2-α]pyridines with dioxazolones13
An approach to pyrrolidine-containing sphingomimetics based on l-tartaric acid chiron13
Multicomponent synthesis of allomaltol containing 2-aminooxazoles and acid-catalyzed recyclization into substituted furo[3,2-b]pyrans13
Contents continued13
Graphical abstract TOC12
Brønsted acid-catalyzed formal (3+2) annulation of 2-naphthols with oxindole derivatives: Development and bioactivity evaluation12
Graphical abstract TOC12
Advances in cyclizative dimerization of alkynes and allenes for the complex bis-heterocyclic compounds synthesis12
Graphical abstract TOC12
A synthetic approach to 5/5/6-polycyclic tetramate macrolactams of the discodermide type12
A four-component protocol for tandem C–S and C–C bond formation to access thienopyrrolediones under transition-metal free conditions12
N6-α-azidoacetyl sydnone imines: Synthesis and reactivity in azide-alkyne cycloaddition reactions12
Electrochemical conversion of carboxylic acids to terminal alkenes enabled by dialkyl phosphate electrolyte12
Features of Pd-catalyzed reactions of allylic acetates elimination in racemic cloprostenol methyl ester triacetate and 15-acetate of methyl ester 11-deoxyprostaglandin E112
Graphical abstract TOC12
Three-component synthesis of bridged 1,3,5-triazinanes12
Advances in transition metal-catalyzed hydroamination of strained ring systems: A comprehensive review12
Synthesis of multisubstituted pyrroles by ligand-controlled site-selective arylation and their transformation into multiarylated pyrrolines and pyrrolidines12
Synthesis of dixanthates, dithiocarbonyl disulfides, and 1,3-oxathiolane-2-thione from diols and carbon disulfide: Model chemistry for Poly(disulfide) synthesis12
Mn(III)-mediated defluorinative radical cyclization of β,β-difluoro-ortho-alkenyl isocyanides with boronic acids: Access to 3-fluoroquinoline derivatives12
Visible-light-promoted Meerwein 3,4-diarylation of maleimides with electron-deficient diazonium salts12
Decarboxylation and cross-coupling reactions of coumarin-3-carboxylic acid: A comprehensive review12
Anion binding by receptors containing NH donating groups – What do anions prefer?12
Cytotoxic activity of secondary metabolites from Machaerium isadelphum and structure-activity relationship of machaeriols and machaeridiols12
Post-Biginelli Ugi reaction towards synthesis of novel bisamides of dihydropyrimidinones: Substrate scope, modification and mechanism12
K2S2O8 promoted C–H direct thiocyanation of pyrrolo[2,3-d]pyrimidine derivatives with ammonium thiocyanate12
Cross-dimerization of fluorenones for synthesis of dibenzo[g,p]chrysenes12
Investigation of cationic transformations involving 5-ethynyl-4-arylpyrimidines11
Discovery of venediols by activation of a silent type I polyketide biosynthetic gene cluster in Streptomyces venezuelae ATCC 1543911
Catalytic enantioselective synthesis of α-allyl-α-aryl 1-indanones via palladium-catalysed decarboxylative asymmetric allylic alkylation11
A smartphone-assisted chromogenic and fluorogenic dual-channel sensor for specific determination of toxic Pb2+ ions with multifaceted applications11
A dual-functional chemical sensor for the detection of Cu2+ and Cd2+ based on the photochromic diarylethene11
Metarhizides A–C and metarhizosides A–B: PKS-NRPS macrolides and aromatic glycosides from an Australian fish gut-derived fungus, Metarhizium sp. CMB-F62411
One-step synthesis of 4-methyl-2-substituted quinazoline-3-oxides via polyphosphoric acid catalyzed acylation of electron-rich anilides with nitroethane11
Recent developments in the metal-free synthesis of oxazoles11
The photocatalytic journey of heteroatoms: Illuminating aza-Henry reactions in organic synthesis11
Isolation, biosynthesis, and chemical syntheses of the hasubanan and acutumine alkaloids: A historical perspective11
Enantioselective Friedel-Crafts alkylation of indoles with trifluoropyruvates catalyzed by chiral Cu(II) complex bearing binaphthyl-proline hybrid ligands11
Graphical abstract TOC11
A transition-metal-free 1,10-phenanthroline-promoted homocoupling reaction for the construction of biaryl diamides11
Catalyst-free synthesis of new hydrazino thiazole derivatives in water under ultrasonication and evaluation of their antioxidant activity11
Spiro-heterocycles: Recent advances in biological applications and synthetic strategies11
Graphical abstract TOC10
Graphical abstract TOC10
Visible-light-mediated metal-free decarboxylative acylation of electron-deficient quinolines using α-ketoacids under ambient air10
Nickel-catalyzed cross-coupling of diaryliodoniums with organoboronic acids to construct C(sp2)–C(sp2) bonds10
HFIP-promoted synthesis of imidazo [1,2-a]pyridines containing CF3-substituted tertiary alcohols at room temperature10
P-menthane-based meroterpenoids with neuroprotective effects from the bark of Magnolia officinalis var. biloba10
A recent update on the environment friendly methodologies to synthesize bis(indolyl)methane and 3,3-di(3-indolyl)-2-indolone derivatives10
Aminopyridinium ylides from pyrano[3,4-c]pyran-7-ium salts: Synthesis and structure10
Graphical abstract TOC10
Electron pull-push modulation: Substrate controlled regioselectivity switch in 1,3-dipolar cycloaddition of isatin-derived azomethine ylides with chalcones10
“Double-locked” fluorescent probe based on a push-pull structure for detecting HClO/H2O210
Copper-assisted palladium catalyzed the cross-coupling reaction of Alknylalane reagents with 2-Thiobenzo[d]thiazoles via C–S bond cleavage10
Transition-metal-free decarboxylative acylation of sulfoximines: An efficient route to N-(ortho-aminobenzoyl)sulfoximines10
Catalyst-free one-pot cascade cyclization: An efficient synthesis of isoindolobenzoxazinones and isoindoloquinazolinones derivatives10
Progress in synthesis of imidazo-, benzoimidazo- and phenanthroimidazophenanthridine skeletons10
Asymmetric hydrogenation and transfer hydrogenation of diketones10
Click synthesis via 1,3-dipolar addition- A versatile route to tetrazine derivatives and In silico corroboration as anti-muscular dystrophy agent10
Enantiospecific synthesis of (R)-2-carboxy-4-(3-phosphonopropyl)-piperazine [(R)-CPP] and (S)-3-(6-acetylnaphthalen-2-ylamino)-2-aminopropanoic acid [(S)-Anap] via an improved strategy: Ring opening o10
Nucleophilic vinylic substitution of 1-fluoroalk-1-enylmagnesium chlorides with Grignard reagents via C–F bond cleavage10
Ratiometic fluorescent detection of Au(III) and fluorescent “turn-off” identification of Cu(II)/Hg(II) with a coumarin-based probe10
Recent progress on Catellani reaction10
Selective oxidation of benzylic alcohols by laccase from white-rot mushroom Tricholoma giganteum AGHP: Total synthesis of taccabulin A, taccabulin D and taccabulin E10
Comparison of the kinetics of aldehyde sensing by covalent bond formation with hydrazines and hydroxylamines10
An updates: Oxidative aromatization of THβC to β-carbolines and their application for the β-carboline alkaloids synthesis10
Pentafluoropyridine (PFPy)-mediated one-pot framework for the synthesis of pharmaceutically active 2,3-dihydroquinazolin-4(1H)-ones10
Design and synthesis of aminopeptidase N fluorescent probe for pesticide detection10
A relay strategy involving electrochemically driven selenylation cyclization and Cu(II) catalyzed cycloaddition-isomerization processes for the synthesis of polysubstituted isoquinolines9
Phosphine-catalyzed [3 + 2]-annulation of Morita–Baylis–Hillman carbonates with benzofuran-derived azadienes: Synthesis of spiro-cyclopentane benzofurans9
A computational study of 1,3-dipolar cycloadditions of nitrile oxides with dienes9
[3 + 2] cycloaddition of 1-(4-Methoxybenzyl)indoles and azaindoles with nitrile oxides9
Synthesis of chiral bicyclic proline analogs9
Free radical-promoted direct C–H silylation of pyrrolo[2,3-d]pyrimidine derivatives with hydrosilanes9
Development of retinoic acid receptor antagonists bearing trans-SF4-alkynyl structure as a linear linker9
Convenient synthesis of endo,endo- and endo,exo-bicyclo[3.3.1]nonane diamines9
Efficient access to triphenylene derivatives via carbamate-directed bay-region selective arylation of biphenol derivatives and Scholl cyclization9
Photocatalytic C–H functionalization utilizing acridine−Lewis acid complexes and pyridine N-oxide based HAT catalysts9
(4+2) cyclization of benzofuran derived oxa-dienes with malononitrile for construction of benzofuranopyran framework9
Metal-free synthesis of 5-alkylated dihydrobenzimidazo[2,1-a]isoquinolines from pendent unactivated alkenes via double C–H functionalizations9
Construction of 2-naphtho[1,2-d][1,3]oxazoles via base-promoted reaction of 1-nitroso-2-naphthol with isothiocyanates9
Access to polysubstituted pyrimidine derivatives via the aza-Diels–Alder reaction of 1,2,3-triazine derivatives and amidines9
Recent advances in the generation and functionalization of C(alkenyl)–Pd species for synthesis of polysubstituted alkenes9
Total synthesis of quasi-symmetric dihydrofuran lignans (−)-ribesin A and B isolated from Ribes nigrum leaves9
Synthesis of new substituted benzo-sulfonyl-imine derivatives via C–C cross-coupling reactions of various aryl halides, isocyanides, and sulfinate salts9
tert-Butyl peroxybenzoate (TBPB)-mediated copper-catalyzed C(sp3)-H methylation of 4-thiazolidinone9
Stereoselective synthesis of naturally-occurring γ-lactones through photoredox catalysis9
Synthesis and evaluation of new isoquinoline diimide derivatives as small molecule acceptors for organic solar cells9
Editorial Board9
Antimicrobial tanzawaic acid derivatives from the endophytic Penicillium citrinum BCC710869
The maiden comprehensive report on emerging trend towards metal free synthesis of biologically potent 2H-Chromenes9
Graphical abstract TOC9
Graphical abstract TOC9
Editorial Board9
Paradigm shift in medicinal products synthesis: Continuous flow technology9
Synthesis of substituted tetrahydropyrimidin-2-ones through nucleophilic cyclization / electrophilic substitution of 1-(3,3-diethoxypropyl)urea with C-nucleophiles9
Convenient synthesis of mixed S–Se-linked pseudodisaccharides by sulfur and selenium exchange9
Synthesis of the pentacyclic tetrahydroberberine pallimamine and epi-pallimamine9
Facile synthesis of N2-substituted-1,2,3-triazole from aryl ethynylene and azide via a one-pot two-step strategy9
Highly diastereoselective [3+3] cycloaddition of indolin-3-ones and nitroallylic acetates: Efficient access to polysubstituted dihydropyrano[3,2-b]indoles8
Editorial Board8
Enhancing stability of cationic palladium complexes with hemilabile 2-benzyl oxazoline ligands: Structural insights and catalytic implications8
Recent update on the role of N-methyl glycine as a building block for the construction of N-heterocyclic frameworks8
Editorial Board8
Iron-catalysed C–H ortho-arylation of edaravone, a promising monoamine oxidase-B inhibitor8
Synthesis and characterization of terpene-derived cationic bolaamphiphiles8
Three-component reaction of sugar hydroxylactone, amine and isocyanide for the synthesis of iminosugars8
One-pot construction of novel trifluoromethyl dihydro-imidazo[1, 2-a]pyridine: A greener approach8
Photoinduced oxidation of benzylic hydrogens using N-bromosuccinimide8
Graphical abstract TOC8
Green and efficient synthesis of chiral amines and hydroxylamines by indium (zinc)-copper-mediated alkylation reaction in aqueous media8
Synthetic study of leptosperol A8
Contents continued8
Graphical abstract TOC8
Cs2CO3 catalyzed direct tandem Michael/Michael reaction of deconjugated butenolides with α′-substituted α, β-unsaturated enones for the synthesis of fused-ring γ-butyrolactone derivatives8
Transition metal catalyzed P–C(sp2) constructing couplings8
Graphical abstract TOC8
Editorial Board8
Michael reaction of enyne derivatives of Meldrum's acid in water: Synthetic approach for creating a C–N/C–S bonds inwith low reactive nucleophiles8
Graphical abstract TOC8
Editorial Board8
Fe-catalyzed sp3-sp3 coupling enabled by hydrofunctionalizations of alkenes8
Synthesis of pyrrolo[1,2-a]quinoline and pyrrolo[1,2-b]isoquinoline derivatives via intramolecular acylation8
Diastereodivergent synthesis of novel dispiro(imidazothiazolotriazine-pyrrolidin-oxindoles) based on ortho- and meta-nitrobenzylidene derivatives of imidazothiazolotriazine8
A concise first total synthesis of luteoride A and luteoride B8
Synthesis of DPA-triazole structures and their application as ligand for metal catalyzed organic reactions8
The novel thermally activated delayed fluorescence compounds based on trifluoromethylpyridine were synthesized for blue OLEDs8
A chiral route to the synthesis of (2S,3aR,7aS)-tert-butyl hexahydro-2,5-methanopyrrolo[3,2-c]pyridine-1(4H)-carboxylate, an intermediate for nicotinic acetylcholine receptors agonists8
Amide hemiaminals from retro-Claisen ring opening of chiral 2-siloxy-1-cyclobutene-1-carboxamides8
Automated stepwise PEG synthesis using a base-labile protecting group8
Contents continued8
Syntheses and structure-activity relationship study of santamarine, douglanine, dihydrosantamarine and four series of 1-/3-oxygenated eudesman-12,6α-olides8
A facile synthesis of novel oxindole-dihydrocoumarins via tandem Michael addition-decarboxylation8
Synthesis of the pentasaccharide repeating unit corresponding to the capsular polysaccharide of Escherichia coli O20:K83:H268
Pyrrole-based acyclic hexapodal aldehyde for anion recognition8
Visible-light-induced C–H cyanoalkylation of N-(pyridin-2-methyl)anilines with cycloketone oxime esters8
Detrifluoromethylamination of trifluoromethyl pyrazolo[1,5-a]pyrimidins enabled by unusual C-CF3 bond cleavage8
Cross-coupling reaction of organoalane reagents with 2-mercaptobenzo-5-membered heterocycles for efficient synthesis of benzo-5-membered heterocycle sulfides8
Incorporating a weak acceptor unit into PTB7-Th to tune the open circuit voltage for non-fullerene polymer solar cells8
Graphical abstract TOC continued8
Graphical abstract TOC7
Graphical abstract TOC Contents continued7
Copper-catalyzed direct oxidative amination of maleimides and quinones with formamides in the presence of an oxidant KIO37
Rh(III)-catalyzed cascade annulation of 4-diazoisoquinolin-3-ones with benzoic acids to access spiro[isobenzofuran-1,4′-isoquinoline]-3,3′-diones7
Experimental investigation of salicylaldehydes in Groebke-Blackburn-Bienayme -3-component reaction7
Visible-light-promoted oxidative decarboxylative acylation of acenaphthenone-2-ylidene ketones with α-keto carboxylic acids under metal, additonal oxidant and base-free condition7
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