Efficient Synthesis of 4,5-Disubstituted-3-Toluenesulfonyl Glutarimides. Application to the Formal Synthesis of Mappicine Ketone
作者:Yung-Sheng Wang、Nein-Chen Chang、Ching-Han Lin、Huo-Mu Tai
DOI:10.1002/jccs.200800064
日期:2008.4
Various 4,5-disubstituted-3-sulfonyl glutarimides 3 were synthesized from α-sulfonyl acetamide 1 and ethyl α,β-disubstituted acrylate esters 2 via stepwise facile [3+3] annulation in moderate yield. The synthesis of pyridin-2-one 9, a key intermediate for mappicineketone (4) synthesis, was also reported.