Month: November 2022

Ghasemzadeh, Maryam Sadat published the artcileAn Eco-Friendly and Efficient Approach for the Synthesis of Tetrazoles via Fe3O4/HT-GLYMO-TA as a New Recoverable Heterogeneous Nanostructured Catalyst, Product Details of C6H4N2, the main research area is substituted tetrazole preparation green chem; tannic acid immobilized functionalized magnetic hydrotalcite reusable green catalyst.

Tannic acid immobilized on functionalized magnetic hydrotalcite (Fe2O4/HT-GLYMO-TA) was synthesized as a durable, environmentally-friendly and magnetic nanostructured catalyst for the synthesis of 5- and 1-substituted-1H-tetrazoles I (R = C6H5, phenanthren-9-yl, 2-thienyl, etc.) and II (R = C6H5, C2H5, 3,4-di-Me-C6H3, etc.). The nanocatalyst was characterized by several methods, Fourier transform IR (FT-IR), X-ray diffraction (XRD) anal., transmission electron microscopy (TEM), field emission SEM (FE-SEM), energy-dispersive X-ray spectroscopy (EDS), EDS-map, thermogravimetric anal. (TGA), vibrating sample magnetometry (VSM) and CHNS anal. The results displayed that the superparamagnetic catalyst with a mean particle size of approx. 23-27 nm has a plate-like shape. The catalytic activity of this new nanostructured catalyst resulted in the preparation of tetrazoles with high yields. Addnl., this novel procedure offers a plethora of benefits including short reaction times, the simplicity of operation, the ease of purification procedure and the reusability of nanocatalyst for at least eight cycles.

ChemistrySelect published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Product Details of C6H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Jiang, Ben-Jie published the artcileSynthesis of Quinolines and 2-Functionalized Quinolines by Difluorocarbene Incorporation, Product Details of C7H6N2, the main research area is functionalized quinoline chemoselective preparation; quinoline preparation.

A general method was developed to allow de novo construction of quinolines I [R = Me, cyclopropyl, Ph, etc.] and C2-functionalized quinolines II [R1 = Me, cyclopentyl, Ph; R2 = Ph, Bn, 1-naphthyl, etc.; R3 = H, Me] from ortho-alkenyl anilines in the presence of a difluorocarbene precursor. This method exploited a crucial reactivity of in-situ generation of isocyanides from condensation of primary aniline with difluorocarbene. Subsequent α-addition of isocyanide by neighboring alkenyl group constructs the quinoline ring. Furthermore, when a combination of difluorocarbene precursor and Se are present, selenoisocyanate intermediates were tentatively generated that upon nucleophilic addition by ortho-alkenyl produce 2-SeH quinolines. In the presence of a second nucleophile such as anilines, competing nucleophilic addition of anilines to the selenoisocyanate was preferred, generating selenourea intermediate. Further nucleophilic addition of the ortho-alkenyl to selenourea followed by elimination of H2Se produces 2-aminoquinolines. This allows one-step multi-component modular preparation of various C2-functionalized quinolines from readily available starting compounds This method showed good yields, scope and chemoselectivity. It was operationally convenient and friendly without manipulating unpleasant isocyanides. The difluorocarbene-enabled primary amine to isocyanide conversion may be exploited to develop other interesting reactions.

Advanced Synthesis & Catalysis published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Product Details of C7H6N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Nie, Xufeng published the artcileAcceptorless dehydrogenation of amines to nitriles catalyzed by N-heterocyclic carbene-nitrogen-phosphine chelated bimetallic ruthenium (II) complex, Category: nitriles-buliding-blocks, the main research area is heterocyclic carbene nitrogen phosphine chelate bimetallic ruthenium complex preparation; amine ruthenium complex catalyst dehydrogenation green chem; nitrile preparation.

A clean, atom-economical and environmentally friendly route for acceptorless dehydrogenation of amines to nitriles by combining a new dual N-heterocyclic carbene-nitrogen-phosphine ligand R(CNP)2 (R = o-xylyl) with a ruthenium precursor [RuCl2(η6-C6H6)]2 was developed. In this system, the electronic and steric factors of amines had a negligible influence on the reaction and a broad range of functional groups were well tolerated. All of the investigated amines was converted to nitriles in good yield of up to 99% with excellent selectivity. The unprecedented catalytic performance of this system was attributed to the synergistic effect of two ruthenium centers chelated by R(CNP)2 and a plausible reaction mechanism was proposed according to the active species found via in-situ NMR and HRMS.

Journal of Catalysis published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Cao, Yanwei published the artcileAmine-Responsive Disassembly of AuI-CuI Double Salts for Oxidative Carbonylation, SDS of cas: 100-70-9, the main research area is amine gold copper salt oxidative carbonylation synergistic catalyst; carbamates; double salts; oxidative carbonylation; synergistic catalysis; urea.

A sensitive amine-responsive disassembly of self-assembled AuI-CuI double salts was observed and its use for the synergistic catalysis was enlightened. Study of the disassembly of [Au(NHC)2][CuI2] revealed the contribution of Cu-assisted ligand exchange of N-heterocyclic carbene (NHC) by amine in [Au(NHC)2]+ and the capacity of [CuI2]- on the oxidative step. By integrating the implicative information coded in the responsive behavior and inherent catalytic functions of d10 metal complexes, a catalyst for the oxidative carbonylation of amines was developed. The advantages of this method were clearly reflected on mild reaction conditions and the significantly expanded scope (51 examples); both primary and steric secondary amines can be employed as substrates. The cooperative reactivity from Au and Cu centers, as an indispensable prerequisite for the excellent catalytic performance, was validated in the synthesis of (un)sym. ureas and carbamates.

Angewandte Chemie, International Edition published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, SDS of cas: 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Alzieu, Thibaut published the artcileConverting oxazoles into imidazoles: new opportunities for diversity-oriented synthesis, Recommanded Product: 4-(5-Oxazolyl)benzonitrile, the main research area is imidazole preparation; oxazole amine microwave assisted reaction.

We report the optimization of a neglected reaction for the rapid and direct conversion of oxazoles into N-substituted imidazoles. The utility of this microwave-promoted reaction for diversity-oriented synthesis is demonstrated in the preparation of >40 N-substituted imidazoles, including α-imidazolyl esters.

Chemical Communications (Cambridge, United Kingdom) published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 87150-13-8 belongs to class nitriles-buliding-blocks, name is 4-(5-Oxazolyl)benzonitrile, and the molecular formula is C10H6N2O, Recommanded Product: 4-(5-Oxazolyl)benzonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Jiang, Shuai published the artcileCobalt-Catalyzed Isocyanide-Based Three-Component Cascade for the Synthesis of Quinazolines, Recommanded Product: 2-Aminobenzonitrile(Flakes or Chunks), the main research area is quinazoline preparation; arylisocyanide arylamine azide three component tandem heterocyclization cobalt catalyst.

A Co-catalyzed cyclization reaction of isocyanides 1-NC-4-R-5-R1C6H2CN (R = H, Me, F, OMe, etc.; R1 = H, OMe, Br), azides R2S(O)ON3 (R2 = n-Pr, Ph, cyclohexyl, thiophen-2-yl, etc.), and amines R3NH2 (R3 = n- Bu, Ph, 1-methyl-1H-indol-5-yl, etc.) to access quinazoline derivatives I and II (R4 = H, n-Bu, t-Bu, 4-methylphenyl) was described. This protocol features a high atom economy, mild reaction conditions, excellent yields, and a broad substrate scope. This cascade reaction involved three or four C-N bonds and the formation of one or two rings. The quinazolin-4(H)-imines I and II obtained are proven to be versatile intermediates for further valuable transformations. It was also found that the cobalt catalyst could be isolated from the reaction mixture and reused.

Organic Letters published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Recommanded Product: 2-Aminobenzonitrile(Flakes or Chunks).

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Mannisto, Jere K. published the artcileOne-Step Synthesis of 3,4-Disubstituted 2-Oxazolidinones by Base-Catalyzed CO2 Fixation and Aza-Michael Addition, Application of 2-Aminobenzonitrile(Flakes or Chunks), the main research area is amine alkenylbromide carbon dioxide tetramethylguanidine carboxylation aza Michael addition; oxazolidinone preparation regioselective; Michael addition; carbon dioxide fixation; cyclization; heterocycles; organocatalysis.

A new, single-step approach to 3,4-disubstituted 2-oxazolidinones by aza-Michael addition using CO2 as a carbonyl source and 1,1,3,3-tetramethylguanidine (TMG) as a catalyst was reported. The modular reaction, which occurred between a γ-brominated Michael acceptor, CO2 and an arylamine, aliphatic amine or phenylhydrazine was performed under mild conditions. The regiospecific reaction displayed good yields (average 75 %) and excellent functional-group compatibility. In addition, late-stage functionalization of drug and drug-like mols. wais demonstrated. The exptl. results suggested a mechanism consisting of several elementary steps: TMG-assisted carboxylation of aniline; generation of an O-alkyl carbamate; and the final ring-forming step through an intramol. aza-Michael addition

Chemistry – A European Journal published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Application of 2-Aminobenzonitrile(Flakes or Chunks).

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Walker, Benjamin R. published the artcileMediator-Enabled Electrocatalysis with Ligandless Copper for Anaerobic Chan-Lam Coupling Reactions, Product Details of C7H6N2, the main research area is mediator electrocatalysis copper anaerobic Chan Lam coupling reaction.

Simple Cu salts serve as catalysts to effect C-X bond-forming reactions in some of the most used transformations in synthesis, including the oxidative coupling of aryl boronic acids and amines. However, these Chan-Lam coupling reactions have historically relied on chem. oxidants that limit their applicability beyond small-scale synthesis. Despite the success of replacing strong chem. oxidants with electrochem. for a variety of metal-catalyzed processes, electrooxidative reactions with ligandless Cu catalysts are plagued by slow electron-transfer kinetics, irreversible Cu plating, and competitive substrate oxidation Herein, the authors report the implementation of substoichiometric quantities of redox mediators to address limitations to Cu-catalyzed electrosynthesis. Mechanistic studies reveal that mediators serve multiple roles by (i) rapidly oxidizing low-valent Cu intermediates, (ii) stripping Cu metal from the cathode to regenerate the catalyst and reveal the active Pt surface for proton reduction, and (iii) providing anodic overcharge protection to prevent substrate oxidation This strategy is applied to Chan-Lam coupling of aryl-, heteroaryl-, and alkylamines with arylboronic acids in the absence of chem. oxidants. Couplings under these electrochem. conditions occur with higher yields and shorter reaction times than conventional reactions in air and provide complementary substrate reactivity.

Journal of the American Chemical Society published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Product Details of C7H6N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Wang, Zhichao published the artcilePreparation and photophysical properties of quinazoline-based fluorophores, Synthetic Route of 1885-29-6, the main research area is photophys property quinazoline based fluorophore preparation.

The donor-acceptor design is a classic method of synthesizing new fluorescent mols. In this study, a series of new fluorescent compounds (1-10) were synthesized based on 2-(3,5-bis(trifluoromethyl)phenyl)-quinazoline acceptor and various amino donors. The fluorescent emissions of 1-10 cover the spectrum from 414 nm to 597 nm in cyclohexane solutions with various amino donors on 4- or 7-positions of quinazoline. Ultimately, compounds 1 and 2 presented the highest photoluminescence quantum yield (QY) over 80%, while compound 10 provided the largest Stokes shift (161 nm) in cyclohexane. Most of them have strong emissions in aggregated states such as in nanoparticles, in powders, in crystals and in films. Mechanochromic properties were observed for compounds 1, 2, 4 and 7. Furthermore, blue OLEDs were fabricated by using compound 2 or 7 as the active layer.

RSC Advances published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Synthetic Route of 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Forni, Jose A. published the artcileAn electrochemical γ-C-H arylation of amines in continuous flow, Formula: C8H4N2, the main research area is arylated sulfonamide regioselective preparation; cyanoarene aryl sulfonamide electrochem gamma CH arylation continuous flow.

A regioselective C(sp3)-C(sp2) cross coupling reaction between inert γ-C(sp3)-H bonds in aliphatic amines and cyanoarenes under electrochem. conditions in flow was reported. The developed methodol. took advantage of a removable redox active auxiliary, which triggered selective 1,7-hydrogen atom transfer to functionalized an aliphatic C-H bond at the γ-position of an alkyl amine. In this reaction, a cyanoarene radical anion functions as both a selective arylating reagent and a redox active mediator, enabled the controlled one electron reduction of the redox active auxiliary. This strategy offered a new approach toward γ-C(sp3)-H bond functionalization allowing generation of, amongst others, sterically crowded carbon centers under mild reaction conditions and in the absence of addnl. catalysts or radical initiators.

Tetrahedron Letters published new progress about Amines Role: RCT (Reactant), RACT (Reactant or Reagent). 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Formula: C8H4N2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts