Divergent reactivity in tandem reduction-Michael ring closures of five- and six-membered cyclic enones
作者:Richard A. Bunce、Baskar Nammalwar、LeGrande M. Slaughter
DOI:10.1002/jhet.111
日期:2009.9
with the six-ring substrate reacting at the ester carbonyl and the five-ring substrate closing on the enone double bond. The difference in reactivity is attributed to the conformational flexibility, relative reactivity, and steric environment of C4-substituted six- and five-membered cyclicenones. J. Heterocyclic Chem., (2009).