作者:Jun-Tao Hou、Jian-Wu Gao、Zhan-Hui Zhang
DOI:10.1007/s00706-011-0461-2
日期:2011.5
A novel and efficient procedure was developed for the preparation of diaminotriarylmethanes through the Baeyer condensation of aromatic aldehydes and N,N-dimethylaniline or N,N-diethylaniline in the presence of niobium chloride under solvent-free conditions. This approach offers several advantages, such as short reaction time, high yields, low cost, and mild reaction conditions.