作者:Yasutaka Hoashi、Takafumi Takai、Etsuo Kotani、Tatsuki Koike
DOI:10.1016/j.tetlet.2013.02.078
日期:2013.4
Thermal intramolecular cyclization of N-amino-2-alkynylpyridines was developed for facile and versatile synthesis of pyrazolo[1,5-a]pyridines. Simply heating N-amino-2-alkynylpyridines in acetic acid provided pyrazolo[1,5-a]pyridines in excellent yield. (C) 2013 Elsevier Ltd. All rights reserved.