Use of phosphonyl carbanions in the synthesis of anti-inflammatory active phosphorus-containing fused heterocycles and relevance phosphonates
作者:Wafaa M. Abdou、Azza A. Kamel、Abeer A. Shaddy
DOI:10.1016/j.ejmech.2010.08.036
日期:2010.11
reactant carbanions with 2-acetyl-5-methyl furan 1 and 2-acetyl-5-bromothiophene 9 resulted in phosphorus-containing fused bicyclic 5,5-membered and 5,6-membered systems 5a–c and 12a–c, respectively, as major reaction products along with minor (∼20%) amounts of phosphorylated heterocycles 3a–c and 10a–c. Further treatment of bromo-substituted bicyclic systems 12a–c with the corresponding carbanion proceeded