Synthesis of Highly Functionalizedγ-Lactonesvia 1,5-Electrocyclic Ring Closure
作者:Olcay Anaç、F. Şeyma Güngör、Gökçe Merey
DOI:10.1002/hlca.200690120
日期:2006.6
We have investigated 1,5-electrocyclic ring-closure reactions of conjugated esters with dimethyl diazomalonate in the presence of [Cu(acac)2] as catalyst. Our new protocol offers an easy entry to various polyfunctionalized γ-lactones in high yields. Their subsequent derivatives may be used as valuable intermediates, especially in the synthesis of natural products and their analogues.