科研之友
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摘要
A vinylog of Michael addition (1,6-addition) of azlactones to delta-substituted dienyl N-acylpyrroles been developed with virtually complete 1,6-diastereo-, and enantioselectivities by means of chiral P-spiro triaminoiminophosphorane as a catalyst. This system has been successfully extended to an unprecedented bis-vinylog of Michael addition (1,8 addition) of azlactones to zeta-substituted trienyl N-acylpyrroles with high levels of regio- and stereocontrol.
- 出版日期2012-11-28
