Category: nitriles-buliding-blocks

Hou, Chuanwei; He, Qian; Yang, Chunhao published the artcile< Direct Synthesis of Diverse 2-Aminobenzo[b]thiophenes via Palladium-Catalyzed Carbon-Sulfur Bond Formation Using Na2S2O3 as the Sulfur Source>, SDS of cas: 886761-96-2, the main research area is diverse aminobenzothiophene synthesis palladium catalyzed carbon sulfur bond formation; sodium thiosulfate sulfur source aminobenzothiophene synthesis.

A novel and direct synthesis of various 2-aminobenzo[b]thiophenes has been developed. The reactions were catalyzed by a combination of Pd(dppf)Cl2 and dppf using odorless and cheap Na2S2O3 as the sulfur source. This strategy allowed us to synthesize important 2-aminobenzo[b]thiophene scaffold more efficiently and conveniently. Thus, e.g., sulfuration of (2-bromophenyl)acetonitrile with Na2S2O3 in presence of Pd(dppf)Cl2 and dppf afforded 2-aminobenzothiophene in up to 64% yield.

Organic Letters published new progress about Acetylation (nucleophilic substitution of dimethylamine formed in situ from DMF under attempted acetylation conditions). 886761-96-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H5BrFN, SDS of cas: 886761-96-2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Sanchez-Viesca, F.; Gomez, M. R. published the artcile< Anomalous Hoesch reaction>, Category: nitriles-buliding-blocks, the main research area is Hoesch reaction ethoxyacetonitrile; methane methoxyphenyl; acetonitrile ethoxy Hoesch reaction; methoxybenzene Hoesch reaction ethoxyacetonitrile; acetophenone dichlorotrimethoxy reaction.

Treating 1,2,4-trimethoxybenzene (I) with (EtO)2CHCN gave II instead of the Hoesch product III (R = R1 = EtO)(IV). Similar treatment of I with EtOCH2CN gave III (R = H, R1 = Cl). IV could not be prepared from III (R = R1 = Cl).

Revista Latinoamericana de Quimica published new progress about 6136-93-2. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Moderhack, Dietrich published the artcile< N-unsubstituted tetrazolocarboxaldehyde>, Application In Synthesis of 6136-93-2, the main research area is tetrazolecarboxaldehyde; aldehyde tetrazolyl.

The title compound was prepared by the cyclization of (EtO)2CHCN with N3H in the presence of pyridine to give I [R = CH(OEt)2], which was treated with HCl to give the aldehyde, which exists in the solid form as the dimer II. Upon dissolving in dry Me2SO at 80°, II gave 90% I (R = CHO), which undergoes most of the normal aldehyde reactions, e.g., aldol condensation. Reaction of I (R = CHO) with piperidine gave the unstable salt III, which upon exposure to air gave IV.

Chemiker-Zeitung published new progress about 6136-93-2. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Application In Synthesis of 6136-93-2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Sun, Huan; Jiang, Yue; Lu, Ming-Kun; Li, Yun-Yun; Li, Li; Liu, Ji-Kai published the artcile< Iron-Catalyzed Tandem Radical Addition/Cyclization: Highly Efficient Access to Methylated Quinoline-2,4-diones>, Application In Synthesis of 38487-85-3, the main research area is methyl quinoline dione preparation; cyanoaryl acrylamide dimethyl sulfoxide photochem methylation iron catalyst.

A visible-light-induced and iron-catalyzed oxidative radical addition/cyclization cascade reaction of N-(o-cyanoaryl)acrylamides I [R1 = 4-Cl, 5-CF3, 3-Br, etc.; R2 = Me, Bn; R3 = Me, [(2,2-dimethylpropanoyl)oxy]methyl, Bn, Ph, (acetyloxy)methyl, (1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)methyl] with DMSO has been developed. The method exhibits a wide substrate scope and an excellent functional-group tolerance, thus providing an efficient and convenient access to a variety of methylated quinoline-2,4-diones II (R4 = 6-Cl, 6-CF3, 5-Br, etc.).

Synlett published new progress about Acrylamides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 38487-85-3 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H8N2O, Application In Synthesis of 38487-85-3.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Gore, Babasaheb Sopan; Lin, Jun-Hao; Wang, Jeh-Jeng published the artcile< Unraveling innate substrate-controlled arylation and bicyclization of 1,5-enynes with α,β conjugates: synthesis of substituted benzo[a]fluorenes>, Recommanded Product: 3-(3-Chlorophenyl)-3-oxopropanenitrile, the main research area is enyne unsaturated ketone arylation arene cyclization Friedel Crafts; benzofluorene aryl regioselective preparation green chem.

A strategy for the aromatic C-H functionalization of electron-rich arenes, such as anisole, phenol, veratrol, toluene or naphthalene, with 1,5-enynes anchored by conjugates, e.g., I (X = CN, EtO2C, Ts, PhCO; R1 = n-Bu, Ph, 3-FC6H4, etc.; R2 = H, 4-Me, 5-F, 4-MeO, etc.; R3 = H, 4-Cl, 3-F, 3-Br, etc.) catalyzed by a Bronsted acid under metal- and solvent-free conditions has been developed. A diverse range of benzo[a]fluorenes, e.g., II [R4 = 4-MeOC6H4, 4-HOC6H4, 3,4-(MeO)2C6H3] [from I (X = CN)] or III (R4 = 4-MeOC6H4, 4-MeC6H4, 1-naphthyl), was obtained in moderate to good yields by using this protocol. This process includes intermol. nucleophilic arene insertion or 6-exo-dig cyclization (depending on the nature of the substrates) followed by a Friedel-Crafts-type reaction and 1,5-H transfer or intermol. nucleophilic arene insertion, resp. In addition, reactions with heterocyclic compounds such as (E)-2-benzoyl-3-(2-(phenylethynyl)pyridin-3-yl)acrylonitrile proceeded smoothly and afforded 11-phenyl-11H-indeno[1,2-h]quinoline-6-carbonitrile. Moreover, solvent recycling experiments were successfully carried out to illustrate green pathways. These reactions feature a readily accessible starting materials, transition metal-free approaches, simple one-pot operations, gram-scale syntheses and wide functional group tolerance.

Green Chemistry published new progress about Alkenynes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Recommanded Product: 3-(3-Chlorophenyl)-3-oxopropanenitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Patterson, Andrew W.; Peltier, Hillary M.; Ellman, Jonathan A. published the artcile< Expedient Synthesis of N-Methyl Tubulysin Analogues with High Cytotoxicity>, Related Products of 6136-93-2, the main research area is asym synthesis methyl tubulysin analog alkylation acylation heterocyclization esterification.

An optimized and highly efficient synthesis of potent, bioactive N-Me tubulysin analogs I and II has been achieved with > 40% overall yields. This synthesis represents a significant improvement over previously reported syntheses of these and related tubulysin analogs. The stereoselective synthesis of the unnatural amino acid tubuvaline is accomplished using tert-butanesulfinamide chem. N-Alkylation to form N-Me tubuvaline is performed without protection of the tubuvaline alc. by implementing a unique N-methylation strategy via formation and reduction of a 1,3-tetrahydrooxazine heterocycle. Acylation of the hindered N-Me tubuvaline amine utilizes a novel sequence of O-acylation followed by an O- to N-acyl transfer to form the hindered amide bond between N-Me tubuvaline and isoleucine. This high-yielding synthesis should enable the production of large quantities of material for biol. studies.

Journal of Organic Chemistry published new progress about Alkylation. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Related Products of 6136-93-2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Roessler, Simon L.; Jelier, Benson J.; Tripet, Pascal F.; Shemet, Andrej; Jeschke, Gunnar; Togni, Antonio; Carreira, Erick M. published the artcile< Pyridyl Radical Cation for C-H Amination of Arenes>, Recommanded Product: 2-Amino-4-methoxybenzonitrile, the main research area is amination arene pyridinium triflate visible light photocatalysis mechanism; amination; late-stage functionalization; photoredox catalysis; pyridyl radical cation; radical mechanism.

Electron-transfer photocatalysis provides access to the elusive and unprecedented N-pyridyl radical cation from selected N-substituted pyridinium reagents. The resulting C(sp2)-H functionalization of (hetero)arenes furnishes versatile intermediates for the development of valuable aminated aryl scaffolds. Mechanistic studies that include the first spectroscopic evidence of a spin-trapped N-pyridyl radical adduct implicate SET-triggered, pseudo-mesolytic cleavage of the N-X pyridinium reagents mediated by visible light.

Angewandte Chemie, International Edition published new progress about Amination (pyridination). 38487-85-3 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H8N2O, Recommanded Product: 2-Amino-4-methoxybenzonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Gore, Babasaheb Sopan; Kuo, Chiao-Ying; Wang, Jeh-Jeng published the artcile< Visible light-assisted Ni-/Ir-catalysed atom-economic synthesis of spiro[furan-3,1'-indene] derivatives>, Application In Synthesis of 21667-62-9 , the main research area is diaryl spiro furan indene preparation regioselective chemoselective stereoselective; isocyanide enyne spirocyclization photocatalysis nickel iridium atom economy.

An atom-economic, efficient, and highly convenient construction of spiro[furan-3,1′-indene] skeletons from isocyanides and 1,5-enynes by synergistic nickel- and iridium-photocatalysis is reported. Spirocyclization was developed under practical and mild conditions, which features excellent functional group tolerance, gram-scale synthesis and representative synthetic transformations for the obtained products and broad substrate scope. Primary mechanistic studies demonstrated that the reaction proceeds through energy-transfer-mediated excitation of intermediate catalytic species.

Chemical Communications (Cambridge, United Kingdom) published new progress about Acetonitriles Role: RCT (Reactant), RACT (Reactant or Reagent). 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Application In Synthesis of 21667-62-9 .

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Jadhav, Amol Maruti; Balwe, Sandip Gangadhar; Kim, Jong Su; Lim, Kwon Taek; Jeong, Yeon Tae published the artcile< Indium(III)chloride catalyzed synthesis of novel 1H-pyrazolo[1,2-b]phthalazine-5,10-diones and 1H-pyrazolo[1,2-a]pyridazine-5,8-diones under solvent-free condition>, Safety of 3-(3-Chlorophenyl)-3-oxopropanenitrile, the main research area is phthalhydrazide aryl aldehyde benzoylacetonitrile indium tandem three component cyclocondensation; aryl amino benzoyl pyrazolophthalazinedione preparation green chem; dioxopyridazine aryl aldehyde benzoylacetonitrile indium tandem three component cyclocondensation; amino aryl benzoyl pyrazolopyridazinedione preparation green chem.

An efficient, inexpensive and environmentally friendly synthesis of novel 3-amino-2-benzoyl-1-aryl-1H-pyrazolo[1,2-b]phthalazine-5,10-dione and 3-amino-2-benzoyl-1-aryl-1H-pyrazolo[1,2-a]pyridazine-5,8-dione derivatives were developed via one-pot three-component reaction of phthalhydrazide or maleic hydrazide, aryl aldehydes and substituted benzoylacetonitriles in the presence of catalytic amount of InCl3 as a Lewis acid catalyst under solvent-free conditions. A mild reaction conditions, short reaction times, high yields and a wide range of functional group tolerance were the most important features of this protocol.

Tetrahedron Letters published new progress about Aryl aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Safety of 3-(3-Chlorophenyl)-3-oxopropanenitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Song, Jian; Zheng, Wen-Hua published the artcile< A highly enantioselective approach towards optically active γ-amino alcohols by tin-catalyzed kinetic resolution of 1,3-amino alcohols>, Electric Literature of 21667-62-9 , the main research area is benzoyl amino alc preparation enantioselective tin; amino alc benzyl chloride acylation kinetic resolution.

A highly enantioselective kinetic resolution of racemic 1,3-amino alcs. via O-acylation was achieved using a chiral organotin as the catalyst. Alkyl- and aryl-substituted 1,3-amino alcs. were resolved with excellent efficiencies to afford the recovered 1,3-amino alcs. and acylative products with high enantioselectivities, with s factors up to >600. Notably, the chiral organotin catalyst was more selective for anti-1,3-amino alcs. than for syn-isomers. A Gram-scale reaction with loading using 2 mol% catalysts demonstrated the utility of this protocol.

Chemical Communications (Cambridge, United Kingdom) published new progress about Acylation. 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Electric Literature of 21667-62-9 .

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts