Why are benzimidazoles efficiently acylated with esters? Identification of a tetrahedral hemiacetal alkoxide intermediate
作者:Ken-ichi Asakawa、J.J. Dannenberg、Kenneth J. Fitch、Stan S. Hall、Chie Kadowaki、Sandor Karady、Satoshi Kii、Kenji Maeda、Benjamin F. Marcune、Toshiaki Mase、Ross A. Miller、Robert A. Reamer、David M. Tschaen
DOI:10.1016/j.tetlet.2005.05.068
日期:2005.7
2-Lithio benzimidazoles were acylated with esters, lactones, and lactams. The tetrahedral hemiacetal intermediates responsible for the efficient conversion were characterized by low temperature NMR. (c) 2005 Published by Elsevier Ltd.