The reductivecoupling of aromatic N,N-acetals and N,O-acetal activated by chlorotrimethylsilane proceeded smoothly in the presence of zinc to give the corresponding diamines in good yields.
An Efficient Method for the Preparation of Vicinal Tertiary Diamines by Reductive Coupling of Aminoacetals Mediated by Low Valent Titanium Iodide Species
作者:Naritoshi Yoshimura、Teruaki Mukaiyama
DOI:10.1246/cl.2001.1334
日期:2001.12
Aminoacetals, easily prepared by condensation of aromatic aldehydes, secondary amines and alcohols, are reductively coupled by using lowvalenttitanium iodide species to afford the corresponding coupling products, vicinal tertiary diamines, in good to high yields under mild reaction conditions.