Huang, Shuang; Hong, Xi; Cui, He-Zhen; Zhou, Quan; Lin, Yue-Jian; Hou, Xiu-Feng published the artcile< N-Methylation of ortho-substituted aromatic amines with methanol catalyzed by 2-arylbenzo[d]oxazole NHC-Ir(III) complexes>, Related Products of 10541-78-3, the main research area is arylamine methanol arylbenzoxazole iridium complex catalyst methylation green chem; methyl arylamine preparation.
Seven new chelated cyclometalated Ir complexes of ABON,P, ABON,O and ABON,C(carbene) based on a rigid and tunable 2-arylbenzo[d]oxazole backbone were prepared for the N-methylation of amines. Among these three coordinated modes, ABON,C(carbene)-chelated iridium-based catalysts exhibited good performance in the monomethylation of aromatic amines with methanol (MeOH) as the green methylation reagent. The steric-modified synthesis of ABON,C(carbene) complexes was described. The most active ABON,C(carbene) complex with marginal steric hindrance as a catalyst was obtained from the benzoxazole ring without a substituent and Me group of the benzimidazole ring on the N-heterocyclic carbene (NHC) ligand. A variety of amines including para- and meta-substituted aromatic amines, as well as heterocyclic amines, were formulated as suitable substrates. Importantly, this catalyst considerably promoted the yield of the N-methylation of ortho-substituted aromatic amines. Controlled kinetic experiments and deuterium-labeling reactions of these ortho-substituted amines were conducted under optimized conditions. On the basis of the exptl. results, a plausible mechanism was proposed.
Dalton Transactions published new progress about Benzoxazoles Role: CAT (Catalyst Use), PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), USES (Uses), RACT (Reactant or Reagent), PREP (Preparation). 10541-78-3 belongs to class ethers-buliding-blocks, and the molecular formula is C8H11NO, Related Products of 10541-78-3.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem