A tactically novel alternative to acyclic stereoselection based on the concept of a replicating chiron - 1,5-C-methyl substitution
作者:Stephen Hanessian、Peter J. Murray、Soumya P. Sahoo
DOI:10.1016/s0040-4039(01)80903-5
日期:1985.1
described wherein a chiral butyrolactone is used as a template to control the stereochemistry of a C-methylation process on the corresponding enolate. A sequential two-carbon homologation and replication of the butyrolactone template allows a second stereocontrolled C-methylation. The ultimate outcome is a seven carbon acyclic chain with a predictable 1,5-substitution pattern of C-methyl groups with or
描述了一种合成序列,其中使用手性丁内酯作为模板来控制相应烯醇化物上C-甲基化过程的立体化学。丁内酯模板的连续两碳同源和复制允许第二个立体控制的C-甲基化。最终结果是一条七碳无环链,具有可预测的C-甲基(带有或不带有中间羟基)的1,5-取代模式。