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Search for "2,4,6-trichloro[1,3,5]triazine" in Full Text gives 7 result(s) in Beilstein Journal of Organic Chemistry.
Recent advances in synthetic approaches for bioactive cinnamic acid derivatives
- Betty A. Kustiana,
- Galuh Widiyarti and
- Teni Ernawati
Beilstein J. Org. Chem. 2025, 21, 1031–1086, doi:10.3762/bjoc.21.85
- could be recycled by adding POCl3 and KSCN, thus promoting the reagent’s sustainability by reducing waste. Carboxyl group activation can also be achieved by using triazine-based reagents. For example, Saberi and Salimiyan (2019) applied 2,4,6-trichloro-1,3,5-triazine (TCT) to perform amidation of
Graphical Abstract
Figure 1: Biologically active cinnamic acid derivatives.
Scheme 1: General synthetic strategies for cinnamic acid derivatizations.
Scheme 2: Cinnamic acid coupling via isobutyl anhydride formation.
Scheme 3: Amidation reaction via O/N-pivaloyl activation.
Scheme 4: Cinnamic acid amidation using TCCA/PPh3 reagent.
Scheme 5: Cinnamic acid amidation using triazine-based reagents.
Scheme 6: Cinnamic acid amidation using continuous flow mechanochemistry.
Scheme 7: Cinnamic acid amidation using COMU as coupling reagent.
Scheme 8: Cinnamic acid amidation using allenone coupling reagent.
Scheme 9: Cinnamic acid amidation using 4-acetamidophenyl triflimide as reagent.
Scheme 10: Cinnamic acid amidation using methyltrimethoxysilane (MTM).
Scheme 11: Cinnamic acid amidation utilizing amine–borane reagent.
Scheme 12: Cinnamic acid amidation using TCCA/PPh3 reagent.
Scheme 13: Cinnamic acid amidation using PPh3/I2 reagent.
Scheme 14: Cinnamic acid amidation using PCl3 reagent.
Scheme 15: Cinnamic acid amidation utilizing pentafluoropyridine (PFP) as reagent.
Scheme 16: Cinnamic acid amidation using hypervalent iodine(III).
Scheme 17: Mechanochemical amidation using 1,1,2,2-tetrafluoroethyl-N,N-dimethylamine (TFEDMA) reagent.
Scheme 18: Methyl ester preparation using tris(2,4,6-trimethoxyphenyl)phosphine (TMPP).
Scheme 19: N-Trifluoromethyl amide preparation using isothiocyanate and AgF.
Scheme 20: POCl3-mediated amide coupling of carboxylic acid and DMF.
Scheme 21: O-Alkylation of cinnamic acid using alkylating agents.
Scheme 22: Glycoside preparation via Mitsunobu reaction.
Scheme 23: O/N-Acylation via rearrangement reactions.
Scheme 24: Amidation reactions using sulfur-based alkylating agents.
Scheme 25: Amidation reaction catalyzed by Pd0 via C–N cleavage.
Scheme 26: Amidation reaction catalyzed by CuCl/PPh3.
Scheme 27: Cu(II) triflate-catalyzed N-difluoroethylimide synthesis.
Scheme 28: Cu/Selectfluor-catalyzed transamidation reaction.
Scheme 29: CuO–CaCO3-catalyzed amidation reaction.
Scheme 30: Ni-catalyzed reductive amidation.
Scheme 31: Lewis acidic transition-metal-catalyzed O/N-acylations.
Scheme 32: Visible-light-promoted amidation of cinnamic acid.
Scheme 33: Sunlight/LED-promoted amidation of cinnamic acid.
Scheme 34: Organophotocatalyst-promoted N–O cleavage of Weinreb amides to synthesize primary amides.
Scheme 35: Cinnamamide synthesis through [Ir] photocatalyst-promoted C–N-bond cleavage of tertiary amines.
Scheme 36: Blue LED-promoted FeCl3-catalyzed reductive transamidation.
Scheme 37: FPyr/TCT-catalyzed amidation of cinnamic acid derivative 121.
Scheme 38: Cs2CO3/DMAP-mediated esterification.
Scheme 39: HBTM organocatalyzed atroposelective N-acylation.
Scheme 40: BH3-catalyzed N-acylation reactions.
Scheme 41: Borane-catalyzed N-acylation reactions.
Scheme 42: Catalytic N-acylation reactions via H/F bonding activation.
Scheme 43: Brønsted base-catalyzed synthesis of cinnamic acid esters.
Scheme 44: DABCO/Fe3O4-catalyzed N-methyl amidation of cinnamic acid 122.
Scheme 45: Catalytic oxidation reactions of acylating agents.
Scheme 46: Preparation of cinnamamide-substituted benzocyclooctene using I(I)/I(III) catalysis.
Scheme 47: Pd-colloids-catalyzed oxidative esterification of cinnamyl alcohol.
Scheme 48: Graphene-supported Pd/Au alloy-catalyzed oxidative esterification via hemiacetal intermediate.
Scheme 49: Au-supported on A) carbon nanotubes (CNT) and B) on porous boron nitride (pBN) as catalyst for the ...
Scheme 50: Cr-based catalyzed oxidative esterification of cinnamyl alcohols with H2O2 as the oxidant.
Scheme 51: Co-based catalysts used for oxidative esterification of cinnamyl alcohol.
Scheme 52: Iron (A) and copper (B)-catalyzed oxidative esterification of cinnamaldehyde.
Scheme 53: NiHPMA-catalyzed oxidative esterification of cinnamaldehyde.
Scheme 54: Synthesis of cinammic acid esters through NHC-catalyzed oxidative esterification via intermolecular...
Scheme 55: Redox-active NHC-catalyzed esterification via intramolecular oxidation.
Scheme 56: Electrochemical conversion of cinnamaldehyde to methyl cinnamate.
Scheme 57: Bu4NI/TBHP-catalyzed synthesis of bisamides from cinnamalaldehyde N-tosylhydrazone.
Scheme 58: Zn/NC-950-catalyzed oxidative esterification of ketone 182.
Scheme 59: Ru-catalyzed oxidative carboxylation of terminal alkenes.
Scheme 60: Direct carboxylation of alkenes using CO2.
Scheme 61: Carboxylation of alkenylboronic acid/ester.
Scheme 62: Carboxylation of gem-difluoroalkenes with CO2.
Scheme 63: Photoredox-catalyzed carboxylation of difluoroalkenes.
Scheme 64: Ru-catalyzed carboxylation of alkenyl halide.
Scheme 65: Carboxylation of alkenyl halides under flow conditions.
Scheme 66: Cinnamic acid ester syntheses through carboxylation of alkenyl sulfides/sulfones.
Scheme 67: Cinnamic acid derivatives synthesis through a Ag-catalyzed decarboxylative cross-coupling proceedin...
Scheme 68: Pd-catalyzed alkyne hydrocarbonylation.
Scheme 69: Fe-catalyzed alkyne hydrocarbonylation.
Scheme 70: Alkyne hydrocarboxylation using CO2.
Scheme 71: Alkyne hydrocarboxylation using HCO2H as CO surrogate.
Scheme 72: Co/AlMe3-catalyzed alkyne hydrocarboxylation using DMF.
Scheme 73: Au-catalyzed oxidation of Au–allenylidenes.
Scheme 74: Pd-catalyzed C–C-bond activation of cyclopropenones to synthesize unsaturated esters and amides.
Scheme 75: Ag-catalyzed C–C-bond activation of diphenylcyclopropenone.
Scheme 76: Cu-catalyzed C–C bond activation of diphenylcyclopropenone.
Scheme 77: PPh3-catalyzed C–C-bond activation of diphenylcyclopropenone.
Scheme 78: Catalyst-free C–C-bond activation of diphenylcyclopropenone.
Scheme 79: Cu-catalyzed dioxolane cleavage.
Scheme 80: Multicomponent coupling reactions.
Scheme 81: Pd-catalyzed partial hydrogenation of electrophilic alkynes.
Scheme 82: Nickel and cobalt as earth-abundant transition metals used as catalysts for the partial hydrogenati...
Scheme 83: Metal-free-catalyzed partial hydrogenation of conjugated alkynes.
Scheme 84: Horner–Wadsworth–Emmons reaction between triethyl 2-fluoro-2-phosphonoacetate and aldehydes with ei...
Scheme 85: Preparation of E/Z-cinnamates using thiouronium ylides.
Scheme 86: Transition-metal-catalyzed ylide reactions.
Scheme 87: Redox-driven ylide reactions.
Scheme 88: Noble transition-metal-catalyzed olefination via carbenoid species.
Scheme 89: TrBF4-catalyzed olefination via carbene species.
Scheme 90: Grubbs catalyst (cat 7)/photocatalyst-mediated metathesis reactions.
Scheme 91: Elemental I2-catalyzed carbonyl-olefin metathesis.
Scheme 92: Cu-photocatalyzed E-to-Z isomerization of cinnamic acid derivatives.
Scheme 93: Ni-catalyzed E-to-Z isomerization.
Scheme 94: Dehydration of β-hydroxy esters via an E1cB mechanism to access (E)-cinnamic acid esters.
Scheme 95: Domino ring-opening reaction induced by a base.
Scheme 96: Dehydroamination of α-aminoester derivatives.
Scheme 97: Accessing methyl cinnamate (44) via metal-free deamination or decarboxylation.
Scheme 98: The core–shell magnetic nanosupport-catalyzed condensation reaction.
Scheme 99: Accessing cinnamic acid derivatives from acetic acid esters/amides through α-olefination.
Scheme 100: Accessing cinnamic acid derivatives via acceptorless α,β-dehydrogenation.
Scheme 101: Cu-catalyzed formal [3 + 2] cycloaddition.
Scheme 102: Pd-catalyzed C–C bond formation via 1,4-Pd-shift.
Scheme 103: NHC-catalyzed Rauhut–Currier reactions.
Scheme 104: Heck-type reaction for Cα arylation.
Scheme 105: Cu-catalyzed trifluoromethylation of cinnamamide.
Scheme 106: Ru-catalyzed alkenylation of arenes using directing groups.
Scheme 107: Earth-abundant transition-metal-catalyzed hydroarylation of α,β-alkynyl ester 374.
Scheme 108: Precious transition-metal-catalyzed β-arylation of cinnamic acid amide/ester.
Scheme 109: Pd-catalyzed β-amination of cinnamamide.
Scheme 110: S8-mediated β-amination of methyl cinnamate (44).
Scheme 111: Pd-catalyzed cross-coupling reaction of alkynyl esters with phenylsilanes.
Scheme 112: Pd-catalyzed β-cyanation of alkynyl amide/ester.
Scheme 113: Au-catalyzed β-amination of alkynyl ester 374.
Scheme 114: Metal-free-catalyzed Cβ-functionalizations of alkynyl esters.
Scheme 115: Heck-type reactions.
Scheme 116: Mizoroki–Heck coupling reactions using unconventional functionalized arenes.
Scheme 117: Functional group-directed Mizoroki–Heck coupling reactions.
Scheme 118: Pd nanoparticles-catalyzed Mizoroki–Heck coupling reactions.
Scheme 119: Catellani-type reactions to access methyl cinnamate with multifunctionalized arene.
Scheme 120: Multicomponent coupling reactions.
Scheme 121: Single atom Pt-catalyzed Heck coupling reaction.
Scheme 122: Earth-abundant transition metal-catalyzed Heck coupling reactions.
Scheme 123: Polymer-coated earth-abundant transition metals-catalyzed Heck coupling reactions.
Scheme 124: Earth-abundant transition-metal-based nanoparticles as catalysts for Heck coupling reactions.
Scheme 125: CN- and Si-based directing groups to access o-selective cinnamic acid derivatives.
Scheme 126: Amide-based directing group to access o-selective cinnamic acid derivatives.
Scheme 127: Carbonyl-based directing group to access o-selective cinnamic acid derivatives.
Scheme 128: Stereoselective preparation of atropisomers via o-selective C(sp2)–H functionalization.
Scheme 129: meta-Selective C(sp2)–H functionalization using directing group-tethered arenes.
Scheme 130: para-Selective C(sp2)–H functionalization using directing group-tethered arenes.
Scheme 131: Non-directed C(sp2)–H functionalization via electrooxidative Fujiwara–Moritani reaction.
Scheme 132: Interconversion of functional groups attached to cinnamic acid.
Scheme 133: meta-Selective C(sp2)–H functionalization of cinnamate ester.
Scheme 134: C(sp2)–F arylation using Grignard reagents.
Scheme 135: Truce–Smiles rearrangement of N-aryl metacrylamides.
Scheme 136: Phosphine-catalyzed cyclization of γ-vinyl allenoate with enamino esters.
New triazinephosphonate dopants for Nafion proton exchange membranes (PEM)
- Fátima C. Teixeira,
- António P. S. Teixeira and
- C. M. Rangel
Beilstein J. Org. Chem. 2024, 20, 1623–1634, doi:10.3762/bjoc.20.145
- chlorine atoms of 2,4,6-trichloro-1,3,5-triazine (cyanuric chloride, 1) by the previously synthesized nucleophiles. The general scheme to obtain the desired triazinephosphonates (TPs) from the synthesized amino nucleophiles are represented in Scheme 5. Initially, the 4-aminophenyl derivatives were
Graphical Abstract
Figure 1: General synthesis of triazinephosphonate compounds.
Scheme 1: Synthesis of diethyl phenylphosphonates 2, 4 and 6.
Scheme 2: Synthesis of (4-hydroxyphenyl)methylphosphonate 7 starting from [4-(benzyloxy)phenyl]methanol (8).
Scheme 3: Synthesis of diethyl [hydroxy(4-hydroxyphenyl)methyl]phosphonate (11) and tetraethyl [(4-hydroxyphe...
Scheme 4: Synthesis of diethyl phenylphosphonates 16 and 14.
Scheme 5: Synthesis of 4-aminophenyltriazinephosphonate derivatives TP1–TP3.
Figure 2: Partial view of 1H and 31P NMR spectra of 4-aminophenyltriazinephosphonate derivatives TP1–TP3.
Scheme 6: Synthesis of (4-hydroxyphenyl)triazinephosphonate derivatives TP4–TP6.
Figure 3: Partial view of 1H and 31P NMR spectra of (4-hydroxyphenyl)triazinephosphonate derivatives TP4–TP6.
Scheme 7: Attempted synthesis of triazinephosphonate TP7.
Figure 4: Preparation of the new doped membranes.
Figure 5: Comparison of in-plane proton conductivity vs RH of Nafion doped membranes, at 60 °C.
A novel method for heterocyclic amide–thioamide transformations
- Walid Fathalla,
- Ibrahim A. I. Ali and
- Pavel Pazdera
Beilstein J. Org. Chem. 2017, 13, 174–181, doi:10.3762/bjoc.13.20
- extra proton to II to afford the quinazoline thione C2. On the other hand the free cyclohexylamine will add to cyclohexyl isothiocyanate (4) to form the thiourea 3. Similar results were obtained by Furumoto [40], and Sun [41] reported the application of cyanuric chloride (2,4,6-trichloro-1,3,5-triazine
Graphical Abstract
Scheme 1: Synthesis of N-cyclohexyl dithiocarbamate cyclohexylammonium salt (2).
Scheme 2: The two-step thiation of quinazolin-4-one A1–6 and phthalazin-1-ones A7 and A8.
Scheme 3: Thiation of quinoline A9 and quinoxalinone A10–13.
Scheme 4: Rational mechanism of the reaction of 4-chloro-2-phenylquinazoline (B2) to 2-phenylquinazolin-4(3H)...
Multicomponent reactions in nucleoside chemistry
- Mariola Koszytkowska-Stawińska and
- Włodzimierz Buchowicz
Beilstein J. Org. Chem. 2014, 10, 1706–1732, doi:10.3762/bjoc.10.179
- nucleoside analogs were also prepared by these methods [101][102]. Sharma et al. used 2,4,6-trichloro[1,3,5]triazine (TCT) as the source of hydrogen chloride to promote the reactions leading to C-4-substituted C-nucleosides 81 with the high (ca. 7:1) diastereoisomeric ratio (Scheme 30) [103]. The products
Graphical Abstract
Figure 1: Selected chemical modifications of natural ribose or 2'-deoxyribose nucleosides leading to the deve...
Scheme 1: (a) Classical Mannich reaction; (b) general structures of selected hydrogen active components and s...
Scheme 2: Reagents and reaction conditions: i. H2O or H2O/EtOH, 60–100 °C, 7 h–10 d; ii. H2, Pd/C or PtO2; ii...
Scheme 3: Reagents and reaction conditions: i. H2O, 90 °C, overnight.
Scheme 4: Reagents and reaction conditions: i. AcOH, H2O, 60 °C, 12 h-5 d; ii. AcOH, H2O, 60 °C, 8 h.
Scheme 5: Reagents and reaction conditions: i. CuBr, THF, reflux, 0.5 h; ii. n-Bu4NF·3H2O, THF, rt, 2 h.
Scheme 6: Reagents and reaction conditions: i. [bmim][PF6], 80 °C, 5–8 h.
Scheme 7: Reagents and reaction conditions: i. EtOH, reflux, 24 h.
Scheme 8: Reagents and reaction conditions: i. NaOAc, H2O, 95 °C, 1–16 h; ii. NaOAc, H2O, 95 °C, 1 h.
Scheme 9: Reagents and reaction conditions: i. a. 37% aq HCl, MeOH; b. NaOAc, 1,4-dioxane, H2O, 100 °C, overn...
Scheme 10: Reagents and reaction conditions: i. DMAP, DCC, MeOH, rt, 1 h.
Scheme 11: The Kabachnik–Fields reaction.
Scheme 12: Reagents and reaction conditions: i. 60 °C, 3 h; ii. 80 °C, 2 h.
Scheme 13: The four-component Ugi reaction.
Scheme 14: Reagents and reaction conditions: i. MeOH, rt, 2–3 d, yields not given.
Scheme 15: Reagents and reaction conditions: i. MeOH/CH2Cl2 (1:1), rt, 24 h, yield not given; ii. 6 N aq HCl, ...
Scheme 16: Reagents and reaction conditions: i. MeOH/H2O, rt, 26 h; ii. aq AcOH, reflux, 50%; iii. reversed ph...
Scheme 17: Reagents and reaction conditions: i. MeOH, rt, 24 h; ii. HCl, MeOH, 0 °C to rt, 6 h, then H2O, rt, ...
Scheme 18: Reagents and reaction conditions: i. DMF/Py/MeOH (1:1:1), rt, 48 h; ii. 10% HCl/MeOH, rt, 30 min.
Scheme 19: Reagents and reaction conditions (R = CH3 or H): i. CH2Cl2/MeOH (2:1), 35–40 °C, 2 d; ii. HF/pyridi...
Scheme 20: Reagents and reaction conditions: i. MeOH, 76%; ii. 80% aq TFA, 100%.
Scheme 21: Reagents and reaction conditions: i. EtOH, rt, 72 h; ii. Zn, aq NaH2PO4, THF, rt, 1 week; then 80% ...
Scheme 22: Reagents and reaction conditions: i. EtOH, rt, 48 h, then silica gel chromatography, 33% for 57 (30...
Scheme 23: Reagents and reaction conditions: i. [bmim]BF4, 80 °C, 4 h; ii. [bmim]BF4, 80 °C, 3 h; iii. [bmim]BF...
Scheme 24: Reagents and reaction conditions: i. [bmim]BF4, 80 °C.
Scheme 25: Reagents and reaction conditions: i. H3PW12O40 (2 mol %), EtOH, 50 °C, 2–15 h; ii. H3PW12O40 (2 mol...
Scheme 26: General scheme of the Biginelli reaction.
Scheme 27: Reagents and reaction conditions: i. EtOH, reflux.
Scheme 28: Reagents and reaction conditions: i. Bu4N+HSO4−, diethylene glycol, 120 °C, 1.5–3 h.
Scheme 29: Reagents and reaction conditions: i. BF3·Et2O, CuCl, AcOH, THF, 65 °C, 24 h; ii. Yb(OTf)3, THF, ref...
Scheme 30: Reagents and reaction conditions: TCT (10 mol %), rt: i. 100 min; ii. 150 min; iii. 140 min.
Scheme 31: Reagents and reaction conditions: i. EtOH, microwave irradiation (300 W), 10 min; ii. EtOH, 75 °C, ...
Scheme 32: The Hantzsch reaction.
Scheme 33: Reagents and reaction conditions: TCT (10 mol %), rt, 80–150 min.
Scheme 34: Reagents and reaction conditions: i. Yb(OTf)3, THF, 90 °C, 12 h; ii. 4 Å molecular sieves, EtOH, 90...
Scheme 35: Reagents and reaction conditions: i. MeOH, 50 °C, 48 h.
Scheme 36: Reagents and reaction conditions: i. MeOH, 25 °C, 5 d.
Scheme 37: Bu4N+HSO4−, diethylene glycol, 80 °C, 1–2 h.
Scheme 38: The three-component carbopalladation of dienes on the example of buta-1,3-diene.
Scheme 39: Reagents and reaction conditions: i. 5 mol % Pd(dba)2, Bu4NCl, ZnCl2, acetonitrile or DMSO, 80 °C o...
Scheme 40: Reagents and reaction conditions: i. 2.5 mol % Pd2(dba)3, tris(2-furyl)phosphine, K2CO3, MeCN or DM...
Scheme 41: Reagents and reaction conditions: i. 2.5 mol % Pd2(dba)3, tris(2-furyl)phosphine, K2CO3, MeCN or DM...
Scheme 42: The three-component Bucherer–Bergs reaction.
Scheme 43: Reagents and reaction conditions: i. MeOH, H2O, 70 °C, 4.5 h; ii. (1) H2, 5% Pd/C, MeOH, 55 °C, 5 h...
Scheme 44: Reagents and reaction conditions: i. pyridine, MgSO4, 100 °C, 28 h, N2; ii. DMF, 70–90 °C, 22–30 h,...
Scheme 45: Reagents and reaction conditions: i. Montmorillonite K-10 clay, microwave irradiation (600 W), 6–10...
Scheme 46: Reagents and reaction conditions: i. Montmorillonite K-10 clay, microwave irradiation (560 W), 6–10...
Scheme 47: Reagents and reaction conditions: i. CeCl3·7H2O (20 mol %), NaI (20 mol %), microwave irradiation (...
Scheme 48: Reagents and reaction conditions: i. PhI(OAc)2 (3 mol %), microwave irradiation (45 °C), 6–9 min.
Scheme 49: Reagents and reaction conditions: i. 117, ethyl pyruvate, TiCl4, dichloromethane, −78 °C, 1 h; then ...
Mild and efficient cyanuric chloride catalyzed Pictet–Spengler reaction
- Ashish Sharma,
- Mrityunjay Singh,
- Nitya Nand Rai and
- Devesh Sawant
Beilstein J. Org. Chem. 2013, 9, 1235–1242, doi:10.3762/bjoc.9.140
- additional deprotection step has to be introduced. Instead, a mild and efficient catalyst that can effectively produce iminium species in situ could generate the compound of interest without adding any extra steps. We envisaged that the use of cyanuric chloride (2,4,6-trichloro-1,3,5-triazine, TCT) [38][39
Graphical Abstract
Scheme 1: The Pictet–Spengler reaction of tryptamine with 4-tolualdehyde.
Figure 1: The two Pictet–Spengler substrates employed in the TCT catalyzed cyclization.
Scheme 2: Synthesis of the Pictet–Spengler substrate 4. Reaction conditions: (a) K2CO3, DMF, 80 °C, 3 h; (b) ...
A general and facile one-pot process of isothiocyanates from amines under aqueous conditions
- Nan Sun,
- Bin Li,
- Jianping Shao,
- Weimin Mo,
- Baoxiang Hu,
- Zhenlu Shen and
- Xinquan Hu
Beilstein J. Org. Chem. 2012, 8, 61–70, doi:10.3762/bjoc.8.6
- isothiocyanates – is still a challenge in organic chemistry. Results and Discussion Previously, Furumoto reported the application of cyanuric chloride (2,4,6-trichloro-1,3,5-triazine, TCT) as a desulfurylation reagent in the synthesis of carbodiimides from thioureas under mild conditions [60]. In that reaction
Graphical Abstract
Scheme 1: The proposed process for the formation of N-phenyl isothiocyanate from aniline.
Synthesis of methylenebisamides using CC- or DCMT- activated DMSO
- Qiang Wang,
- Lili Sun,
- Yu Jiang and
- Chunbao Li
Beilstein J. Org. Chem. 2008, 4, No. 51, doi:10.3762/bjoc.4.51
- , when amides react with electrophile-activated DMSO, the yields are rather low. We have found new electrophiles, 2,4,6-trichloro[1,3,5]triazine (CC) and 2,4-dichloro-6-methoxy[1,3,5]triazine (DCMT), which activate DMSO in the presence of amides to yield methylenebisamides in good to fair yields. The
- amides can be aromatic or aliphatic. The operation is simple and the reagents are inexpensive. Keywords: amides; condensation; DMSO; methylenebisamides; 2,4,6-trichloro[1,3,5]triazine; Introduction Sulfoxides are activated by electrophiles to produce reactive sulfonium salts. These electrophiles
- on the chlorination [10] and etherification [11] of benzyl alcohols and from other references [12][13][14], we believe the reaction between 2,4,6-trichloro[1,3,5]triazine (cyanogen chloride, or CC) and DMSO produces a reactive sulfonium salt intermediate. Therefore, it was of interest to study the
Graphical Abstract
Scheme 1: Synthesis of N,N′-methylenedibenzamide using CC-activated DMSO.
Scheme 2: Synthesis of N,N′-methylenebisamide using CC-activated DMSO.
Scheme 3: Synthesis of N,N′-methylenedibenzamide using DCMT-activated DMSO.
Scheme 4: Synthesis of N,N′-methylenebisamide using DCMT-activated DMSO.
Scheme 5: Plausible reaction mechanism of amide with CC- or DCMT-activated DMSO.
