The acid-catalyzed cyclizations of unsaturated carbonyl compounds utilizing silica gel at high pressure
作者:William G. Dauben、Robert T. Hendricks
DOI:10.1016/s0040-4039(00)92321-9
日期:1992.1
The ene-like cyclizations of a series of unsaturatedcarbonylcompounds have been studied using silica gel at high pressure (15 kbar) as a new catalytic system. This new method is general for forming 5- and 6-membered ring carbocycles. The mildness of this method was demonstrated by the successful cyclization of a vinyl cyciopropyl aldehyde.