Cyclic Alkenenitriles: Synthesis, Conjugate Addition, and Stereoselective Annulation
作者:Fraser F. Fleming、Zhiyu Zhang、Qunzhao Wang、Omar W. Steward
DOI:10.1021/jo0345291
日期:2003.10.1
methylthiomethyl-protected hydroxyalkenenitriles that are easily hydrolyzed for subsequent annulations with omega-chloroalkyl Grignard reagents. Deprotonating the gamma-hydroxyalkenenitriles with t-BuMgCl followed by addition of omega-chloroalkyl Grignard reagents triggers a conjugate addition-alkylation sequence leading exclusively to cis-octalins, hydrindanes, and decalins. Stereoelectronic control favors an axial