Month: November 2022

Lam, Raphael H. published the artcileSelective formylation or methylation of amines using carbon dioxide catalyzed by a rhodium perimidine-based NHC complex, Recommanded Product: 4-Methoxy-N-methylaniline, the main research area is rhodium perimidine NHC complex formylation methylation catalyst.

Carbon dioxide can play a vital role as a sustainable feedstock for chem. synthesis. To be viable, the employed protocol should be as mild as possible. Herein we report a methodol. to incorporate CO2 into primary, secondary, aromatic or alkyl amines catalyzed by a Rh(I) complex bearing a perimidine-based NHC/phosphine pincer ligand. The periminide-based ligand belongs to a class of 6-membered NHC ligand accessed through chelate-assisted double C-H activation. N-Formylation and -methylation of amines were performed using a balloon of CO2, and phenylsilane as the reducing agent. Product selectivity between formylated and methylated products was tuned by changing the solvent, reaction temperature and the quantity of phenylsilane used. Medium to excellent conversions, as well as tolerance to a range of functional groups, were achieved. Stoichiometric reactions with reactants employed in catalysis and time course studies suggested that formylation and methylation reactions of interest begin with hydrosilylation of CO2 followed by reaction with amine substrates.

Green Chemistry published new progress about Amines Role: SPN (Synthetic Preparation), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Recommanded Product: 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

He, Feifei published the artcileSilver-Catalyzed N-H Functionalization of Aryl/Aryl Diazoalkanes with Anilines, Name: 4-Methoxy-N-methylaniline, the main research area is benzhydryl amine preparation; aniline diaryldiazoalkane insertion reaction silver catalyst.

Herein, the N-H functionalization reaction of primary and secondary anilines RNHR1 (R = H, Me, Et, Ph; R1 = Ph, 3-bromophenyl, 2H-1,3-benzodioxol-5-yl, etc.) with diaryldiazoalkanes R2C(=N2)R3 (R2 = Ph, 2-chlorophenyl, 3-nitrophenyl, etc.; R3 = Ph, 4-methoxyphenyl, 3-methylphenyl, etc.) using simple AgPF6 as catalyst was reported. Broad applicability in the reaction of diaryldiazoalkanes with different anilines (31 examples, up to 97% yield) was demonstrated. Furthermore, a possible reaction mechanism for the N-H functionalization was proposed.

Organic Letters published new progress about Amines Role: SPN (Synthetic Preparation), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, Name: 4-Methoxy-N-methylaniline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Shao, Xiaoqing published the artcileDecarboxylative Csp3-N Bond Formation by Electrochemical Oxidation of Amino Acids, Recommanded Product: 4-Methoxyphenylacetic acid, the main research area is carbon nitrogen bond formation electrochem oxidation amino acid decarboxylation.

Decarboxylative Csp3-N coupling reactions have been developed through electrochem. oxidation of amino acids. The reaction proceeds via anodic oxidative decarboxylation of carboxylic acids to form stabilized carbocations, which are trapped by azoles or amides to construct C-N bonds. This method avoids the preactivation of carboxylic acids and the use of expensive transition-metals and external chem. oxidants.

Organic Letters published new progress about Amides, oxo Role: RCT (Reactant), RACT (Reactant or Reagent). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Recommanded Product: 4-Methoxyphenylacetic acid.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Wu, Shanxuan published the artcileRecyclable Oxofluorovanadate-Catalyzed Formylation of Amines by Reductive Functionalization of CO2 with Hydrosilanes, SDS of cas: 5961-59-1, the main research area is potassium vanadium fluoride oxide catalyst preparation recyclable; amine carbon dioxide phenylsilane formylation; amide preparation formylation; amides; carbon dioxide; fluorides; heterogeneous catalysis; silanes.

An efficient method was developed for the reductive amination of CO2 by using readily available and recyclable oxofluorovanadates as catalysts. Various amines were transformed into the desired N-formylated products in moderate to excellent yields at room temperature in the presence of phenylsilane. Mechanistic studies based on in situ IR spectroscopy suggest a reaction pathway initiated through F-Si interactions. The activated phenylsilane allows for CO2 insertion to produce phenylsilyl formate, which undergoes attack by the amine to generate the target product.

ChemSusChem published new progress about Amides Role: SPN (Synthetic Preparation), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, SDS of cas: 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Massaro, Luca published the artcileStereodivergent Synthesis of Trisubstituted: Direct Access to Both Pure Geometrical Isomers, Category: isoquinoline, the main research area is enamide stereodivergent preparation geometrical isomer.

A stereodivergent strategy was developed to access either (E)- or (Z)-isomers of trisubstituted enamides. Starting from an extensive range of ketones, it was possible to synthesize and isolate the desired pure isomer by switching the reaction conditions. Lewis acid activation enables the formation of the (E)-isomers in high stereoselectivity (>90:10) and good yields. However, the use of a Bronsted acid gave the (Z)-isomers, again in high selectivity (up to 99:1), with moderate yields.

Journal of Organic Chemistry published new progress about Amides Role: SPN (Synthetic Preparation), PREP (Preparation). 104-01-8 belongs to class isoquinoline, name is 4-Methoxyphenylacetic acid, and the molecular formula is C9H10O3, Category: isoquinoline.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Kenarkoohi, Tahmineh published the artcileAn efficient solvent-free synthesis of 2-(alkylamino)-2-oxo-1-arylethyl-6,12-dioxo-6,12-dihydroindolo[1,2-b]isoquinoline-11-carboxylate derivatives via four-component reaction, Recommanded Product: 2,3-Dimethoxybenzaldehyde, the main research area is isatin phthalic anhydride cyclohexyl isocyanide benzaldehyde four component reaction; cyclohexylaminooxo phenyl ethyl dioxoindoloisoquinoline carboxylate preparation green chem; Dihydroindole; Indoloisoquinoline; Isocyanide; Isoquinoline; Passerini-like reaction.

An one-pot approach for the synthesis of a new series of 2-(alkylamino)-2-oxo-1-arylethyl-6,12-dioxo-6,12-dihydroindolo[1,2-b]isoquinoline-11-carboxylate derivatives via a four-component reaction using isatins, homophthalic anhydride, cyclohexyl isocyanide and aldehydes was described. This method was several advantages such as being catalyst- and solvent-free reaction and a high-efficiency process with high to excellent yields.

Molecular Diversity published new progress about Amides Role: SPN (Synthetic Preparation), PREP (Preparation). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Recommanded Product: 2,3-Dimethoxybenzaldehyde.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Ghosh, Swarbhanu published the artcilePalladium Grafted Functionalized Nanomaterial: An Efficient Catalyst for the CO2 Fixation of Amines and Production of Organic Carbamates, SDS of cas: 5961-59-1, the main research area is reusable polystyrene support palladium nanocatalyst preparation thermal stability; amine carbon dioxide palladium nanocatalyst formylation; amide preparation green chem; dimethyl carbonate amine palladium nanocatalyst carboxylation; carbamate preparation green chem.

An environmentally benign synthetic studies of N-formylated amine derivatives by carbon dioxide fixation of amines was investigated in presence of Merrifield resin supported palladium nanomaterial (Pd-PS-amtp catalyst) at ambient temperature Poly(methylhydrosiloxane) was employed as a susceptible hydride transferring agent in the present CO2 fixation reaction. Further this catalyst exhibited an extended catalytic activity for the production of organic carbamates from di-Me carbonate and aromatic amines. The Pd-PS-amtp nanomaterial was produced by two step strategies and systematically characterized by FTIR, UV-Vis, FE-SEM and TGA-DTA anal. The benefits of this system were quite economical, high recycling efficiency and consuming short reaction time which allowed significant product yield. The production of organic carbamates in presence of the present catalyst was a phosgene-free procedure where di-Me carbonate (DMC) was utilized both as carboxylating agent and solvent. The recovery of Pd-PS-amtp nanomaterial was easily performed after the reactions and recyclable up to six times without considerable reduction in catalytic activity.

ChemistrySelect published new progress about Amides Role: SPN (Synthetic Preparation), PREP (Preparation). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, SDS of cas: 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Mishiro, Kenji published the artcileEfficiency Enhancement of a Photocatalytic Decarbonylation of an Aminocyclopropenone by Benzothiophene Substitution, Safety of 1,3-Dimethoxybenzene, the main research area is aminocyclopropenone photocatalytic decarbonylation substituent effect benzothiophenyl dehydration condensation.

To improve the efficiency of the photocatalytic decarbonylation of cyclopropenones, the effects of substituents on cyclopropenone were explored. A benzothiophene-substituted aminocyclopropenone exhibited significantly improved decarbonylation efficiency to produce the corresponding ynamine, which worked as a potent dehydration condensation agent. The benzothiophene derivative was applicable to the photocatalytic reaction in the presence of potential excited-state quenchers such as oxygen and anilines. The high catalyst sensitivity would be attributed to the involvement of triplet energy transfer reaction pathway, which was not observed in the reaction with previously reported aminocyclopropenones.

Journal of Organic Chemistry published new progress about Amides Role: SPN (Synthetic Preparation), PREP (Preparation). 151-10-0 belongs to class isoquinoline, name is 1,3-Dimethoxybenzene, and the molecular formula is C8H10O2, Safety of 1,3-Dimethoxybenzene.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Chen, Xiao Yun published the artcileGreen H2O-Promoted Solvent-Free Synthesis of Enaminocarbonyl Compounds with High Stereoselectivity from Electron-Deficient Terminal Alkynes, HPLC of Formula: 5961-59-1, the main research area is enaminocarbonyl preparation diastereoselective green chem solvent free; terminal alkyne amine hydroamination.

A green H2O-promoted solvent-free hydroamination of electron-deficient terminal alkynes with amines has been developed. All secondary amines, including aliphatic and aromatic amines, gave the corresponding (E)-enamines in good to excellent yields, whereas primary aromatic amines afforded Z-configured products in moderate yields. Propiolates, propyn-1-ones, propynamides, and 1-(ethynylsulfonyl)-4-methylbenzene were explored in this Michael addition

Synlett published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 5961-59-1 belongs to class isoquinoline, name is 4-Methoxy-N-methylaniline, and the molecular formula is C8H11NO, HPLC of Formula: 5961-59-1.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem

Demidoff, Felipe C. published the artcileCross-Coupling Reactions with 2-Amino-/Acetylamino-Substituted 3-Iodo-1,4-naphthoquinones: Convenient Synthesis of Novel Alkenyl- and Alkynylnaphthoquinones and Derivatives, Formula: C9H10O3, the main research area is styryl naphthoquinone green preparation diastereoselective; amino iodo naphthoquinone styrene Heck palladium catalyst; alkynyl naphthoquinone preparation; acetylamino iodo naphthoquinone alkyne cross coupling copper mediated; triazole naphthoquinone hybrid preparation; alkyne azide click.

The applications of 2-amino-/acetylamino-substituted 3-iodo-1,4-naphthoquinones in cross-coupling reactions were described to successfully afford sixteen novel 3-styryl-1,4-naphthoquinones (amino-stilbene-quinone hybrids) I [R = Ph, 4-MeC6H4, 1,3-benzodioxol-5-yl, etc.] and four 3-alkynyl-1,4-naphthoquinones II [R1 = TMS, CH2OH, 4-MeOC6H4OCH2, 4-ClC6H4OCH2] in overall good yields. Interestingly, the alkynylated derivatives could be obtained from ligand- and Pd-free CuI-mediated cross-coupling reactions, after extensive investigations to exclude Pd as a co-catalyst. Lastly, the desilanized terminal alkyne was subjected to click chem. reactions to gave two novel triazole-1,4-naphthoquinone hybrids III [R2 = H, OMe].

Synthesis published new progress about Alkynes, α- Role: RCT (Reactant), RACT (Reactant or Reagent). 86-51-1 belongs to class isoquinoline, name is 2,3-Dimethoxybenzaldehyde, and the molecular formula is C9H10O3, Formula: C9H10O3.

Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem