Synthesis of chromeno[3,4-b]pyrrol-4(3H)-ones by cyclocondensation of 1,3-dicarbonyl compounds with 4-chloro-3-nitrocoumarin
摘要:
The base-mediated cyclocondensation of 1,3-dicarbonyl compounds with 4-chloro-3-nitrocoumarin provides a convenient approach to various chromeno[3,4-b]pyrrol-4(3H)-ones. (C) 2010 Elsevier Ltd. All rights reserved.