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Synthesis of C3-alkenylated 2,3,4-trisubstituted pyrrole derivatives through cyclization of methylene isocyanides and ene–yne–ketones†
Shasha Li,Gongruixue Zeng,Xiaoqi Xing,Zhiheng Yang,Feiyun Ma,Boxia Li,Weiyan Cheng,Jiankang Zhang,Ruoyu He
New Journal of Chemistry Pub Date : 12/21/2020 00:00:00 , DOI:10.1039/D0NJ05253A
Abstract

A mild, transition-metal-free and facile C3-alkenylated 2,3,4-trisubstituted pyrrole cyclization of methylene isocyanides with ene–yne–ketones in moderate to good yields was explored. The E-alkenylated products were isolated in moderate to exclusive selectivity in most cases. The investigated compounds in this work are expected to open up for use as potential medicinal agents or precursors for post-modification.

Graphical abstract: Synthesis of C3-alkenylated 2,3,4-trisubstituted pyrrole derivatives through cyclization of methylene isocyanides and ene–yne–ketones
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