Synthesis of tricyclopolyprenols via a radical addition and a stereoselective elimination. Part I: Methodology
作者:Thierry Jenn、Denis Heissler
DOI:10.1016/s0040-4020(97)10259-9
日期:1998.1
tricyclopolyprenols based on the addition of the isocopalen-15-yl radical either to a 2-methylene-3-hydroxy alkenenitrile or to a methyl 2-methylene-3-hydroxy alkenoate - both prepared by a Baylis-Hillman reaction - is examined. When two model adducts, a β-acetoxy nitrile and a β-mesyloxy ester, were subjected to an elimination reaction, the former gave a trans α,β-unsaturated nitrile whereas the latter gave
基于将异异戊烯基-15-基团加到2-亚甲基-3-羟基链烯腈或2-亚甲基-3-羟基链烯酸甲酯上的合成三环聚戊二烯的可行性(均由Baylis-Hillman制备)反应-已检查。当将两种模型加合物,β-乙酰氧基腈和β-甲氧基酯进行消除反应时,前者给出了反式α,β-不饱和腈,而后者给出了顺式α,β-不饱和酯。还描述了将辅助的氰基或甲氧基羰基还原为甲基。