Cyclization Reactions of Homopropargyl Azide Derivatives Catalyzed by PtCl<sub>4</sub> in Ethanol Solution: Synthesis of Functionalized Pyrrole Derivatives
作者:Kou Hiroya、Shigemitsu Matsumoto、Masayasu Ashikawa、Kentaro Ogiwara、Takao Sakamoto
DOI:10.1021/ol062249c
日期:2006.11.9
text] PtCl4-catalyzed cyclization reactions of homopropargyl azide derivatives to pyrrole rings were investigated. Using ethanol as solvent with 2,6-di-tert-butyl-4-methylpyridine as the base was found to be the best set of conditions for effecting this ring-closing reaction. These reaction conditions can be applied to the preparation of functionalized pyrrole derivatives, with no effect on the functional
[结构:见正文]研究了PtCl4催化的叠氮高丙炔衍生物与吡咯环的环化反应。发现使用乙醇作为溶剂,以2,6-二叔丁基-4-甲基吡啶为碱是实现该闭环反应的最佳条件。这些反应条件可以用于官能化吡咯衍生物的制备,而对官能团没有影响。