A general method for the preparation of carbonyl compounds and butenolides from organomanganese pentacarbonyl complexes
作者:Philip. DeShong、Daniel R. Sidler、Philip J. Rybczynski、Greg A. Slough、Arnold L. Rheingold
DOI:10.1021/ja00216a034
日期:1988.4
La reaction des complexes pentacarbonyles d'alkylmanganese avec divers composes ethyleniques et acetyleniques donne des cetones et des dihydro-2,5 furannones-2
La 反应 des complexes pentacarbonyles d'alkylmanganese avec divers composes Etheniques et acetyleniques donne des cetones et des dihydro-2,5 furannones-2
The reaction of α-carbomethoxy-γ-benzylidenebutenolide with diazomethane has been studied, and the β-methylbutenolide structure of the resulting product established through degradative and synthetic work. Extension of this direct C-methylation to other related butenolides is presented. Hydrogenation of enol lactones is discussed in some detail.