A novel polymeric catalyst for the one-pot synthesis of xanthene derivatives under solvent-free conditions
作者:Behrooz Maleki、Shahram Barzegar、Zeinalabedin Sepehr、Mina Kermanian、Reza Tayebee
DOI:10.1007/s13738-012-0092-5
日期:2012.10
simple, efficient, and environmentally benign route was developed for the preparation of 14-aryl or alkyl-14H-dibenzo[a,j]xanthene, 1,8-dioxo-octahydroxanthene and 12-aryl—8,9,10,12-tetrahydrobenzo[a]xanthene-11-ones from condensation of various aldehydes with (i) β-naphthol, (ii) cyclic 1,3-dicarbonyl compounds and (iii) β-naphthol and cyclic 1,3-dicarbonyl compounds, using novel polymeric catalyst [poly(AMPS-co-AA)]
开发了一种简单,有效且环境友好的方法,用于制备14-芳基或烷基14 H-二苯并[a,j]氧杂蒽,1,8-二氧代-八氢氧杂蒽和12-芳基-8,9,10,各种醛与(i)β-萘酚,(ii)环状1,3-二羰基化合物和(iii)β-萘酚和环状1,3-二羰基化合物缩合而成的12-四氢苯并[a]黄嘌呤-11-酮,在无溶剂条件下使用新型聚合物催化剂[聚(AMPS-co-AA)]。使用容易获得的催化剂,更短的反应时间,更好的产率,反应的简单性,非均相系统和容易的后处理是本方法的优点。