Nucleophilic difluoromethylation of N,N-acetals with TMSCF2SO2Ph reagent promoted by trifluoroacetic acid: A facile access to α-difluoromethylated tertiary amines
摘要:
A protocol for the synthesis of difluoromethylated tertiary amines by nucleophilic difluoromethylation of N,N-acetals using TMSCF2SO2Ph reagent is developed. The reaction proceeds smoothly in 1,4-dioxane using K2CO3 as the initiator. A key feature of the reaction is that the in situ generated iminiums (from N,N-acetals and CF3COOH) could be fluoroalkylated in an efficient way. (C) 2012 Elsevier B.V. All rights reserved.
Nucleophilic difluoromethylation of N,N-acetals with TMSCF2SO2Ph reagent promoted by trifluoroacetic acid: A facile access to α-difluoromethylated tertiary amines
作者:Weizhou Huang、Chuanfa Ni、Yanchuan Zhao、Bing Gao、Jinbo Hu
DOI:10.1016/j.jfluchem.2012.05.018
日期:2012.11
A protocol for the synthesis of difluoromethylated tertiary amines by nucleophilic difluoromethylation of N,N-acetals using TMSCF2SO2Ph reagent is developed. The reaction proceeds smoothly in 1,4-dioxane using K2CO3 as the initiator. A key feature of the reaction is that the in situ generated iminiums (from N,N-acetals and CF3COOH) could be fluoroalkylated in an efficient way. (C) 2012 Elsevier B.V. All rights reserved.