Tetrahedron

Article	Citations
Graphical abstract TOC	91
Synthesis of mono- and tetra-arylated tetrathienylethene via direct palladium-catalyzed C–H arylation: A useful method for tuning luminescent properties of arylated tetrathienylethenes	81
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 strategy	63
Synthesis of novel peptide-based tetracarboxylate ligands for metal organic framework (MOF) systems and applications	63
Palladium-catalyzed ring-opening/defluorinative coupling of gem-DFCPs with pyranones/pyridones	60
Mild and practical synthesis of 5-thio-d-glucopyranose and its pentaacetate derivatives	58
I2-DMSO mediated N1/C5 difunctionalization of anthranils with aryl methyl ketones: A facile access to multicarbonyl compounds	54
The mechanism of the reaction of hydrazines with α,β-unsaturated carbonyl compounds to afford hydrazones and 2-pyrazolines (4,5-dihydro-1H-pyrazoles): Experimental and theoretical results	45
A new chemodosimeter for p-nitroaniline based on bis-benzimidazolium salt	42
Sustainable approaches in the catalytic synthesis of optically active and inactive diaryl sulfoxides	41
An access to 1H-cyclopenta[b]pyridine-4,5-diones via condensation of 6-nitro-1,2-o-quinone with arylamines and acetone	40
Difluoroboron complexes of peripheral β-diketonates in cyclopheophorbides: Their syntheses and optical properties	38
Application of post-Ugi transformation strategies towards the synthesis and functionalization of 2,5-Diketopiperazines	36
A brief encounter on steroids between Robinson and Woodward in 1951	34
Towards the total synthesis of 9,11-secosterol: Linking A,B- and D-rings with Michael addition to sulfone-activated cyclopentenone	32
Graphical abstract TOC	32
Graphical abstract TOC	32
Graphical abstract TOC	30
Asymmetric hydrogenation and transfer hydrogenation	29
The chemistry of disorazoles and structure-activity relationships: An update	28
Concise stereoselective and stereodivergent syntheses of (±)-melicolones A and B	27
Graphical abstract TOC	27
Editorial Board	26
Tethered aza-Wacker cyclization reactions with unusual N-alkoxy carbamates	26
Traversing the chiral pool potential of carvone in total synthesis of natural products	26

3-Fluorooxindoles from indolin-2-ones by Selectfluor	25
Copper-catalyzed three-component reaction to construct thietane ring using elemental sulfur	25
Studies toward the synthesis of yaretol: An unexpected rearrangement en route to the tricyclic core	25
Graphical abstract TOC	24
A flexible enantioselective approach to 2,5-disubstituted cis-decahydroquinolines	24
Catalytic asymmetric cycloetherification via intramolecular oxy-Michael addition of enols	23
Synthesis and biological evaluation of antimalarial and antileukemic activity of new C-10 modified artemisinin derivatives	23
Development of a scalable route to a complex cyclobutane linchpin via a diastereoselective CuI-catalyzed vinylation of a cyclobutanyl aldehyde	23
Synthesis and biological evaluation of trehalose-based Bi-aryl derivatives as C-type lectin ligands	23
Synthesis of two optically active V-shaped molecules: Investigating the correlation between the stacking angle and chiroptical properties	22
Visible light promoted synthesis of 2-amino sugar analogues from glycals and N-aminopyridinium salts	22
BODIPY-derived fluorescent probes for targeting and tracking lipid droplets dynamics	22
Recent total syntheses of anthraquinone-based natural products	22
Bumps in the road: R. B. Woodward and his years before tenure	22
α-Aminophosphonates 4-XC6H4–NH–CH(4-BrC6H4)–P(O)(OiPr)2 (X = H, Br, MeO): Crystal structures, Hirshfeld surface analysis, computational studies and in silico molecular docking with the SARS-CoV-2 prot	22
Regio- and stereoselective synthesis of bromoalkenes by homolytic hydrobromination of alkynes with hydrogen bromide	22
Modular and efficient synthesis of a poly (propylene imine) (PPI) dendron applied to acid-sensitive doxorubicin conjugation	21
The application of azoarenes in the synthesis of nitrogen-containing heterocycles	21
TBAT-catalyzed dioxasilinane formation from beta-hydroxy ketones	21
Viewing the Ritter Reaction through Single Electron Transfer Lenses	21
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 activity	20
Mechanochemical cyclization of push-pull enamines with propargyl alcohols	20
Molecular networking-based discovery of new polyketides from the deep-sea-derived fungus Talaromyces indigoticus FS688	20
Synthesis of psychotropic alkaloids from Galbulimima	20
Graphical Abstract TOC continued	20
Iodine(III) reagents for the aromatic functionalization with inorganic groups	20
Recent advances in atroposelective synthesis of axially chiral heterobiaryl featuring indole frameworks	20
Graphical abstract TOC	19
Graphical abstract TOC	19
Graphical abstract TOC continued	19
Applications of Claisen condensations in total synthesis of natural products. An old reaction, a new perspective	19
Graphical abstract Toc Contents continued	19
Graphical abstract TOC	18
Total synthesis of the falcarinol-type oxylipin (3S)-16,17-didehydrofalcarinol and its activity against Leishmania mexicana	18
Graphical abstract TOC	18
Oxa-phenalene [b]-fused BODIPY dyes: Synthesis, structures, and photophysical properties	18
Graphical abstract TOC	18
Editorial for the special issue commemorating the 90th birthday of Dr A V Rama Rao	18
Visible-light-driven synthesis of benzoxepine derivatives from aromatic diazo compounds	18
Understanding selectivity of nucleophilic addition to β-formyl-α-haloenoates: A synthetic and theoretical investigation	17
Exploring azetidine containing heterocycles: From green synthesis to applications	17
An approach to pyrrolidine-containing sphingomimetics based on l-tartaric acid chiron	17
Carboxylic acid recognition of an N-ethyl-substituted diamidine having a diphenylnaphthalene unit in competing protic solvents	17
Synthesis of novel 2-alkyl and 2-aryl 4-phosphorylated oxazolines from dimethyl (±)-phosphoserinate	16
Bidentate deltamide hydrogen bond donor catalyzed cycloaddition of carbon dioxide into epoxide	16
Design and synthesis of sinomenine D-ring tetrazole-isoxazole and tetrazole-triazole derivatives via 1, 3-dipolar cycloaddition reaction	16
From blue to red. Reaching the full visible spectrum with a single fluorophore: BODIPY	16
Reduction of bis(5-alkyl-2-furyl)(2-nitroaryl)methane with aqueous titanium trichloride solution	16
A near-infrared fluorescent off-on probe with large Stokes shift for sensing hydrazine in vitro and in vivo	15
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 conjugate	15

Visible-light-promoted one-pot synthesis of β-keto sulfones from aryldiazo tetrafluoroborate salts via aerobic multicomponent reaction	15
Graphical abstract TOC	15
Asymmetric cycloadditions, diels-alder and cyclopropanation transformations, with (S)-Benzyl N-2-trifluoroacetamidoacrylyl oxazolidinone	15
Synthesis and characterization of oligonucleotides containing 2′-O,4′-C-methyleneoxy-bridged 5-methyluridine with an unsubstituted bridge	15
Facile synthesis of spiro-heterocycles through one-pot multicomponent [3 + 3] cross 1,3-dipolar cycloaddition reactions	15
Synthesis of organoselenium compounds using electrochemical and photochemical methods as novel approaches in organic chemistry	15
UV-induced E/Z isomerization of the electron-rich pyrrole ring containing diketoenols: Theoretical and experimental study	15
Cp∗Co(III)-catalyzed C–H amidation of 2-arylimidazo[1,2-α]pyridines with dioxazolones	15
Recent advancement in the synthesis and applications of N-acyl benzotriazoles in organic synthesis	14
Graphical abstract TOC	14
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 cyclization	14
I2/DMSO-mediated C(sp2)-S bond formation between heterocyclic enamines and triethylammonium thiolates	14
Carboxylated pillar[5]arene cavity accommodates organic cations in the host-guest complexes	14
Light-promoted AIBN-catalyzed oxidative cleavage of aryl olefins to aryl ketones	14
Editorial Board	14
An NAD+ with dually modified adenine for labeling ADP-ribosylation-specific proteins	14
An overview of the synthetic routes to essential oral anti-diabetes drugs	13
Photochemical generation of ketenes from phenanthrene-based cyclobutanones	13
Multicomponent synthesis of allomaltol containing 2-aminooxazoles and acid-catalyzed recyclization into substituted furo[3,2-b]pyrans	13
Editorial Board	13
Graphical abstract TOC	13
An AIE fluorescent supramolecular polymer constructed by host-guest interactions among pillar[5]arenes/sulfonium salts for Pd2+ detection	13
Aciculitin D, a cytotoxic heterodetic cyclic peptide from a Poecillastra sp. marine sponge	13
Asymmetric synthesis of atropisomers enabled by N-heterocyclic carbene catalysis	13
Selective oxidation of benzylic alcohols by laccase from white-rot mushroom Tricholoma giganteum AGHP: Total synthesis of taccabulin A, taccabulin D and taccabulin E	12
Nucleophilic vinylic substitution of 1-fluoroalk-1-enylmagnesium chlorides with Grignard reagents via C–F bond cleavage	12
Editorial Board	12
Graphical abstract TOC Contents continued	12
A dual-functional chemical sensor for the detection of Cu2+ and Cd2+ based on the photochromic diarylethene	12
Advances in transition metal-catalyzed hydroamination of strained ring systems: A comprehensive review	12
Spiro-heterocycles: Recent advances in biological applications and synthetic strategies	12
Brønsted acid-catalyzed formal (3+2) annulation of 2-naphthols with oxindole derivatives: Development and bioactivity evaluation	12
One-step synthesis of 4-methyl-2-substituted quinazoline-3-oxides via polyphosphoric acid catalyzed acylation of electron-rich anilides with nitroethane	12
Graphical abstract TOC	12
Graphical abstract TOC	12
Cross-dimerization of fluorenones for synthesis of dibenzo[g,p]chrysenes	12
Visible-light-mediated metal-free decarboxylative acylation of electron-deficient quinolines using α-ketoacids under ambient air	12
Contents continued	12
Catalytic enantioselective synthesis of α-allyl-α-aryl 1-indanones via palladium-catalysed decarboxylative asymmetric allylic alkylation	12
Graphical abstract TOC	12
Graphical abstract TOC	12
Graphical abstract TOC	12
Diterpenoids from the aril of Torreya grandis and their cytotoxicity	12
A four-component protocol for tandem C–S and C–C bond formation to access thienopyrrolediones under transition-metal free conditions	11
Iodine-induced coupling reaction forms C–S and C–N bonds to construct 3,4-heteroatom-Functionalized maleimides	11
Visible-light-promoted Meerwein 3,4-diarylation of maleimides with electron-deficient diazonium salts	11
A transition-metal-free 1,10-phenanthroline-promoted homocoupling reaction for the construction of biaryl diamides	11
Isolation, biosynthesis, and chemical syntheses of the hasubanan and acutumine alkaloids: A historical perspective	11
Electrochemical conversion of carboxylic acids to terminal alkenes enabled by dialkyl phosphate electrolyte	11
Advances in cyclizative dimerization of alkynes and allenes for the complex bis-heterocyclic compounds synthesis	11
Features of Pd-catalyzed reactions of allylic acetates elimination in racemic cloprostenol methyl ester triacetate and 15-acetate of methyl ester 11-deoxyprostaglandin E1	11
Ratiometic fluorescent detection of Au(III) and fluorescent “turn-off” identification of Cu(II)/Hg(II) with a coumarin-based probe	11
Metarhizides A–C and metarhizosides A–B: PKS-NRPS macrolides and aromatic glycosides from an Australian fish gut-derived fungus, Metarhizium sp. CMB-F624	11
Catalyst-free one-pot cascade cyclization: An efficient synthesis of isoindolobenzoxazinones and isoindoloquinazolinones derivatives	11
Copper-assisted palladium catalyzed the cross-coupling reaction of Alknylalane reagents with 2-Thiobenzo[d]thiazoles via C–S bond cleavage	11
Synthetic approaches to N- and 4-substituted 1,4-dihydro-3(2H)-isoquinolinone derivatives	11
Three-component synthesis of bridged 1,3,5-triazinanes	11
Enantioselective Friedel-Crafts alkylation of indoles with trifluoropyruvates catalyzed by chiral Cu(II) complex bearing binaphthyl-proline hybrid ligands	11
Activation of tetrahydrofuran with 2-((Fluoroalkyl)thio)Benzothiazolium reagents	11
Synthesis of dixanthates, dithiocarbonyl disulfides, and 1,3-oxathiolane-2-thione from diols and carbon disulfide: Model chemistry for Poly(disulfide) synthesis	10
Comparison of the kinetics of aldehyde sensing by covalent bond formation with hydrazines and hydroxylamines	10
Post-Biginelli Ugi reaction towards synthesis of novel bisamides of dihydropyrimidinones: Substrate scope, modification and mechanism	10
Cytotoxic activity of secondary metabolites from Machaerium isadelphum and structure-activity relationship of machaeriols and machaeridiols	10
A recent update on the environment friendly methodologies to synthesize bis(indolyl)methane and 3,3-di(3-indolyl)-2-indolone derivatives	10
Synthesis of multisubstituted pyrroles by ligand-controlled site-selective arylation and their transformation into multiarylated pyrrolines and pyrrolidines	10
Asymmetric hydrogenation and transfer hydrogenation of diketones	10
Recent developments in the metal-free synthesis of oxazoles	10
Recent progress on Catellani reaction	10
“Double-locked” fluorescent probe based on a push-pull structure for detecting HClO/H2O2	10
Anion binding by receptors containing NH donating groups – What do anions prefer?	10
Pentafluoropyridine (PFPy)-mediated one-pot framework for the synthesis of pharmaceutically active 2,3-dihydroquinazolin-4(1H)-ones	10
K2S2O8 promoted C–H direct thiocyanation of pyrrolo[2,3-d]pyrimidine derivatives with ammonium thiocyanate	10
Recent advances in the syntheses and reactions of biologically promising β-lactam derivatives	10
HFIP-promoted synthesis of imidazo [1,2-a]pyridines containing CF3-substituted tertiary alcohols at room temperature	10
Catalyst-free synthesis of new hydrazino thiazole derivatives in water under ultrasonication and evaluation of their antioxidant activity	10
A smartphone-assisted chromogenic and fluorogenic dual-channel sensor for specific determination of toxic Pb2+ ions with multifaceted applications	10
Graphical abstract TOC	10
A synthetic approach to 5/5/6-polycyclic tetramate macrolactams of the discodermide type	10
An updates: Oxidative aromatization of THβC to β-carbolines and their application for the β-carboline alkaloids synthesis	10
P-menthane-based meroterpenoids with neuroprotective effects from the bark of Magnolia officinalis var. biloba	10

Investigation of cationic transformations involving 5-ethynyl-4-arylpyrimidines	10
Discovery of venediols by activation of a silent type I polyketide biosynthetic gene cluster in Streptomyces venezuelae ATCC 15439	10
Graphical abstract TOC	10
Imidazole hydrochloride promoted synthesis of 3,5-disubstituted-1,2,4-oxadiazoles	10
Decarboxylation and cross-coupling reactions of coumarin-3-carboxylic acid: A comprehensive review	10
Graphical abstract TOC	10
Graphical abstract TOC	10
Cross-coupling reaction of organoalane reagents with 2-mercaptobenzo-5-membered heterocycles for efficient synthesis of benzo-5-membered heterocycle sulfides	10
Aminopyridinium ylides from pyrano[3,4-c]pyran-7-ium salts: Synthesis and structure	9
[3 + 2] cycloaddition of 1-(4-Methoxybenzyl)indoles and azaindoles with nitrile oxides	9
Facile synthesis of N2-substituted-1,2,3-triazole from aryl ethynylene and azide via a one-pot two-step strategy	9
Synthesis of pyrrolo[1,2-a]quinoline and pyrrolo[1,2-b]isoquinoline derivatives via intramolecular acylation	9
Graphical abstract TOC	9
Graphical abstract TOC	9
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 o	9
Efficient access to triphenylene derivatives via carbamate-directed bay-region selective arylation of biphenol derivatives and Scholl cyclization	9
Photocatalytic C–H functionalization utilizing acridine−Lewis acid complexes and pyridine N-oxide based HAT catalysts	9
Synthesis of substituted tetrahydropyrimidin-2-ones through nucleophilic cyclization / electrophilic substitution of 1-(3,3-diethoxypropyl)urea with C-nucleophiles	9
Convenient synthesis of mixed S–Se-linked pseudodisaccharides by sulfur and selenium exchange	9
Convenient synthesis of endo,endo- and endo,exo-bicyclo[3.3.1]nonane diamines	9
Stereoselective synthesis of naturally-occurring γ-lactones through photoredox catalysis	9
Editorial Board	9
Three-component reaction of sugar hydroxylactone, amine and isocyanide for the synthesis of iminosugars	9
Click synthesis via 1,3-dipolar addition- A versatile route to tetrazine derivatives and In silico corroboration as anti-muscular dystrophy agent	9
Phosphine-catalyzed [3 + 2]-annulation of Morita–Baylis–Hillman carbonates with benzofuran-derived azadienes: Synthesis of spiro-cyclopentane benzofurans	9
Total synthesis of quasi-symmetric dihydrofuran lignans (−)-ribesin A and B isolated from Ribes nigrum leaves	9
Free radical-promoted direct C–H silylation of pyrrolo[2,3-d]pyrimidine derivatives with hydrosilanes	9
Design and synthesis of aminopeptidase N fluorescent probe for pesticide detection	9
Access to polysubstituted pyrimidine derivatives via the aza-Diels–Alder reaction of 1,2,3-triazine derivatives and amidines	9
Development of retinoic acid receptor antagonists bearing trans-SF4-alkynyl structure as a linear linker	9
(4+2) cyclization of benzofuran derived oxa-dienes with malononitrile for construction of benzofuranopyran framework	9
Detrifluoromethylamination of trifluoromethyl pyrazolo[1,5-a]pyrimidins enabled by unusual C-CF3 bond cleavage	9
Synthesis of the pentacyclic tetrahydroberberine pallimamine and epi-pallimamine	9
(1S)-(−)-N-Monofluoromethylthio-7,7-dichloro-2,10-camphorsultam: An optically pure reagentfor asymmetric monofluoromethylthiolation	9
One-pot construction of novel trifluoromethyl dihydro-imidazo[1, 2-a]pyridine: A greener approach	8
Pyrrole-based acyclic hexapodal aldehyde for anion recognition	8
Editorial Board	8
Synthesis and evaluation of new isoquinoline diimide derivatives as small molecule acceptors for organic solar cells	8
Highly diastereoselective [3+3] cycloaddition of indolin-3-ones and nitroallylic acetates: Efficient access to polysubstituted dihydropyrano[3,2-b]indoles	8
New gentisyl alcohol derivatives from Aspergillus japonicas collected from the Arctic 6700-4 sea area	8
Synthesis and characterization of terpene-derived cationic bolaamphiphiles	8
Graphical abstract TOC continued	8
Enantioselective enolate protonations: Evaluation of achiral templates with fluxional brønsted basic substituents in conjugate addition of malononitriles	8
Graphical abstract TOC	8
A facile synthesis of novel oxindole-dihydrocoumarins via tandem Michael addition-decarboxylation	8
Graphical abstract TOC	8
Synthesis, photophysical properties, anti-Kasha photochemical reactivity and biological activity of vinyl- and alkynyl-BODIPY derivatives	8
Two Erythrina alkaloids and three diarylpropanoids from Erythrina velutina	8
Metal-free synthesis of 5-alkylated dihydrobenzimidazo[2,1-a]isoquinolines from pendent unactivated alkenes via double C–H functionalizations	8
Antimicrobial tanzawaic acid derivatives from the endophytic Penicillium citrinum BCC71086	8
Paradigm shift in medicinal products synthesis: Continuous flow technology	8
A computational study of 1,3-dipolar cycloadditions of nitrile oxides with dienes	8
Highly dispersed, subnano Mo-catalyzed reductive C–N coupling of aryl boric acids and aromatic nitro compounds	8
Copper catalysed regioselective synthesis of pyrimidine substituted Indolizino[8,7-b]indole derivatives via cascade A3 annulation	8
Recent advances in organic synthesis applying elemental selenium	8
Editorial Board	8
Michael reaction of enyne derivatives of Meldrum's acid in water: Synthetic approach for creating a C–N/C–S bonds inwith low reactive nucleophiles	8
Editorial Board	8
Incorporating a weak acceptor unit into PTB7-Th to tune the open circuit voltage for non-fullerene polymer solar cells	8
Editorial Board	8
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 agonists	8
Recent advances in homogeneous base-metal-catalyzed transfer hydrogenation reactions	8
Iron-catalysed C–H ortho-arylation of edaravone, a promising monoamine oxidase-B inhibitor	8
Intramolecular oxypalladation-initiated domino sequence: One-pot, two-step regioselective synthesis of isoquinolines	8
The maiden comprehensive report on emerging trend towards metal free synthesis of biologically potent 2H-Chromenes	8
tert-Butyl peroxybenzoate (TBPB)-mediated copper-catalyzed C(sp3)-H methylation of 4-thiazolidinone	8
Recent advances in the generation and functionalization of C(alkenyl)–Pd species for synthesis of polysubstituted alkenes	8
Contents continued	8
Diaminopimelic acid and its analogues: Synthesis and biological perspective	8
Limonoids, triterpenes, sterols, and flavonoids from Cedrela odorata L. and their cytotoxic activity	8
Total synthesis of tanzawaic acid A	8
Editorial Board	8
Enhancing stability of cationic palladium complexes with hemilabile 2-benzyl oxazoline ligands: Structural insights and catalytic implications	8
Graphical abstract TOC	8
Synthesis of the pentasaccharide repeating unit corresponding to the capsular polysaccharide of Escherichia coli O20:K83:H26	8
Graphical abstract TOC	8
Green and efficient synthesis of chiral amines and hydroxylamines by indium (zinc)-copper-mediated alkylation reaction in aqueous media	8
A green and efficient method for one-step synthesis of novel oxazolo[3,2-c]pyrimidine derivatives in lactic acid	8
1,3-Dipolar cycloaddition reactions of enaminones and azides: Synthesis of 4-acyl-1,2,3-triazoles and mechanistic studies	8
Graphical abstract TOC	7
Graphical abstract TOC	7
Ru-catalyzed asymmetric transfer hydrogenation of racemic β-keto γ-lactams via dynamic kinetic resolution	7
Total synthesis of eucryphin and its glycosylation derivatives	7
Manganese(I) catalyzed cross-coupling of secondary allylic alcohols and primary alcohols	7
Visible-light-mediated O–H functionalization reactions of acetylenic alcohols with 3-diazooxindoles: Facile access to spirooxindole-fused oxacycles	7
Graphical Abstract TOC Continued	7
Graphical abstract TOC	7
Synthesis of an open tetra-imidazolium salt based on tetramethylenebenzene and the recognition to H2PO4−	7
Advancements in the selective transformation of olefins to new C–C bonds through cooperative catalysis involving electrochemistry and transition metals	7
C(sp2)-C(sp2) Suzuki cross-coupling of arylammonium salts catalyzed by a stable Pd–NHC complex	7
Graphical abstract TOC	7
Graphical abstract TOC	7
Proteins through the eyes of an organic chemist	7
Two-enzyme cascade catalyzed trideuteromethylative modification of natural products	7
Assembly of tetracoordinated organoboron complexes from 8-aminoquinoline, aryltrifluoroborates and acylating reagents via three-component cascade reactions	7