Lewis acid catalyzed diels-alder reactions of S-(+)-carvone1 with silyloxy dienes. Total synthesis of (+)-α-cyperone.
作者:Anja A. Haaksma、Ben J.M. Jansen、Aede de Groot
DOI:10.1016/s0040-4020(01)92253-7
日期:1992.4
The Diels-Alder reactions of S-(+)-carvone with 2-trimethylsilyloxy-1,3-butadiene, 3-trimethyl-silyloxy-1,3-pentadiene and 2-tert-butyldimethylsilyloxy-3-methyl-1,3-butadiene with ethylaluminium dichloride as catalyst are described. The synthetic value of the adducts is demonstrated by the total synthesis of (+)-α-cyperone from one of the adducts.
S-(+)-香芹酮与2-三甲基甲硅烷氧基-1,3-丁二烯,3-三甲基甲硅烷氧基-1,3-戊二烯和2-叔丁基二甲基甲硅烷氧基-3-甲基-1,3-的狄尔斯-阿尔德反应描述了用二氯化乙基铝作为催化剂的丁二烯。加合物的合成值通过从其中一种加合物的全合成来证明。