Mukaiyama-Michael reaction of cyclic ketene silyl acetals and enones. Importance of ring flexibility in electron transfer process
作者:Yukihiro Fujita、Shunichi Fukuzumi、Junzo Otera
DOI:10.1016/s0040-4039(97)00321-3
日期:1997.3
Michael reaction of macrocyclic ketenesilylacetals or α-enones occurs smoothly under electrontransfer conditions while the reaction of 6-membered analogs is more sluggish, indicating the importance of the ring flexibility to allow the α,β-carbon-carbon bonds of both reaction components to rotate when the radical species are generated.