Synthesis of unsaturated bicyclic lactones and acetals via palladium-promoted cyclization of cyclic allylic alcohols
作者:Richard C. Larock、Dean E. Stinn
DOI:10.1016/s0040-4039(00)99120-2
日期:1989.1
Unsaturated bicyclic lactones are readily prepared by converting cyclic allylic alcohols to the corresponding α-chloromercurio acetate esters and reacting them with Li2PdCl4. The corresponding acetals can be synthesized directly by reaction of the allylic alcohols with ethyl vinyl ether and Pd(OAc)2.
Benzofuranone compounds, and production of smoking compositions
申请人:Philip Morris Incorporated
公开号:US05137035A1
公开(公告)日:1992-08-11
This invention provides a process for the production of novel smoking compositions which contain a benzofuranone flavorant additive, and further provides novel benzofuranone compounds as illustrated by the cis 6-phenyl-3a, 4,5,7a-tetrahydro-2(3H)-benzofuranone: ##STR1## Under normal cigarette smoking conditions, the benzofuranone additive in an invention smoking composition enhances the flavor and aroma of the mainstream and sidestream smoke.