Biomimetic Cationic Polyannulation Reaction Catalyzed by Bi(OTf)3: Cyclization of 1,6-Dienes, 1,6,10-Trienes, and Aryl Polyenes
摘要:
Nonactivated trienes and aryltrienes were cyclized into polycyclic compounds in good to excellent yields under bismuth triflate catalysis in a biomimetic fashion. The reaction showed broad applicability and allowed for the formation of functionalized bicyclic to tetracyclic structures from simple precursors in one pot. For some specific substrates, the cyclization was followed by a methyl shift as encountered in terpenoid biosynthesis.
DOI:
10.1021/ol201028f
作为产物:
描述:
香叶基溴 、 丙酰乙酸乙酯 在
NaH 作用下,
以
四氢呋喃 、 乙醚 、 mineral oil 为溶剂,
以7.024 g (77%)的产率得到(E)-5,9-Dimethyl-2-(1-oxopropyl)-4,8-decadienoic acid, ethyl ester