Base-Free Oxidative Coupling of Amines and Aliphatic Alcohols to Imines over Au–Pd/ZrO2 Catalyst under Mild Conditions
作者:Wenjing Cui、Jiang Wang、Sagala、Meilin Jia
DOI:10.1134/s0036024421050307
日期:2021.5
synthesis of imines from amines and aliphatic alcohols over Au–Pd alloy catalystsunder ambient conditions was developed. A series of Au–Pd/ZrO2 bimetallic catalysts with varying metal loadings and Au : Pd molar ratios were prepared and their catalytic performance was investigated. The 3.0 wt % Au–Pd/ZrO2 alloy catalyst with Au : Pd molar ratio of 1 : 1 showed the best catalytic performance. Under air atmosphere
Switching the<i>N</i>-Alkylation of Arylamines with Benzyl Alcohols to Imine Formation Enables the One-Pot Synthesis of Enantioenriched α-<i>N</i>-Alkylaminophosphonates
作者:Natalie Hofmann、Kai C. Hultzsch
DOI:10.1002/ejoc.201900209
日期:2019.6.2
The base‐free N‐alkylation of anilines with benzylic alcohols can be switched in favor of imine formation simply by switching between a closed and an open reaction system. Further functionalization of the in situ synthesized imine leads to α‐N‐alkylaminophosphonates via a one‐pot procedure in an atom‐economic fashion.
synthesis of 5-aminooxazole starting from simple and readily available inputs is described. Thus, simply heating a methanol solution of an aldehyde 3, an amine 4, and an alpha-isocyanoacetamide 5 provided the 5-aminooxazole (1) in good to excellent yield. The reaction of 1 with alpha,beta-unsaturated acylchloride 13 lead to the formation of pyrrolo[3,4-b]pyridin-5-one (2) in a single operation. A triple