The cobalt-catalyzed 1,4-hydrovinylation of alkenes with 1,3-dienes and the cobalt-catalyzed Diels-Alder reaction of alkynes with 1,3-dienes lead to acyclic and cyclic 1,4-dienes, respectively. These products can be transformed into 1,3-dicarbonyl functional groups by ozonolysis or alternative carbon-carbon double bond cleaving reactions. The application towards the synthesis of hepialone and a pyranone-type lipid from Vanilla beans is described.
钴催化的烯烃与1,3-二烯的1,4-氢
乙烯化反应以及
钴催化的
炔烃与1,3-二烯的Diels-Alder反应分别生成线性和环状的1,4-二烯。这些产物可以通过
臭氧裂解或其他碳-碳双键断裂反应转化为1,3-二羰基功能团。文中描述了从香草豆合成海皮阿龙和一种
吡喃酮型脂质的应用。