An Efficient Method for the Preparation of Versatile Building Blocks: 1-Substituted 2,2-Dimethoxyethylamine Hydrochlorides
作者:Xinyan Wang、Yuefei Hu、Bo Liu、Deyong Su、Guolin Cheng、Hui Liu
DOI:10.1055/s-0029-1216943
日期:2009.10
A novel method for the preparation of 1-substituted 2,2-dimethoxyethylamine hydrochlorides was developed. The method includes three highly efficient steps: (1) direct use of aqueous (MeO)2CHCHO for the preparation of N,O-acetal by condensation with Betti base without acidic catalyst; (2) regioselective alkylations of the N,O-acetal with Grignard reagents; and (3) Pd/C catalytic hydrogenolyses of benzylamines