An efficient method for the synthesis of spiro and fused N-heterocyclic phosphor esters. Reactions of triketoindan-2-oxime with α-phosphonyl carbanions
摘要:
Treatment of triketoindan-2-oxime with alpha-phosphonyl carbanions in sodium ethanolate solution at reflux temperature led to a number of the corresponding substituted spiroisooxazole-, fused 1,3-oxazole, and 1,4-oxazine phosphor esters in moderate to high yields. Mechanisms for the formation of five- and six-membered rings are provided. A comparison of Wittig-Horner and Wittig reagent counterparts in reactions with the oxime is discussed. The various biological properties of selected examples of the synthesized products were studied.
An efficient method for the synthesis of spiro and fused N-heterocyclic phosphor esters. Reactions of triketoindan-2-oxime with α-phosphonyl carbanions
作者:Wafaa M. Abdou、Ashraf A. Sediek、Maha D. Khidre
DOI:10.1007/s00706-007-0806-z
日期:2008.6
Treatment of triketoindan-2-oxime with alpha-phosphonyl carbanions in sodium ethanolate solution at reflux temperature led to a number of the corresponding substituted spiroisooxazole-, fused 1,3-oxazole, and 1,4-oxazine phosphor esters in moderate to high yields. Mechanisms for the formation of five- and six-membered rings are provided. A comparison of Wittig-Horner and Wittig reagent counterparts in reactions with the oxime is discussed. The various biological properties of selected examples of the synthesized products were studied.