New synthetic strategies for the stereocontrolled synthesis of substituted ‘skipped’ diepoxides
作者:Christopher J. Morten、Timothy F. Jamison
DOI:10.1016/j.tet.2009.05.074
日期:2009.8
This report describes a number of newsyntheticapproaches toward methyl-substituted mono- and diepoxy alcohols that serve as substrates for endo-selective epoxide-opening cascades. The key transformations involve the manipulation of alkynes. Highlighted are the directed methylmetalation of bishomopropargylic alcohols, the bromoallylation of alkynes, and Pd-catalyzed cross-coupling between an alkenyl