Photochemistry of Tricyclo[5.2.2.0<sup>2,6</sup>]undeca-4,10-dien-8-ones: An Efficient General Route to Substituted Linear Triquinanes from 2-Methoxyphenols. Total Synthesis of (±)-Δ<sup>9(12)</sup>-Capnellene
作者:Day-Shin Hsu、Yu-Yu Chou、Yen-Shih Tung、Chun-Chen Liao
DOI:10.1002/chem.200902752
日期:2010.3.8
An efficient and short entry to polyfunctionalized linear triquinanes from 2‐methoxyphenols is described by utilizing the following chemistry. The Diels–Alder reactions of masked o‐benzoquinones, derived from 2‐methoxyphenols, with cyclopentadiene afford tricyclo[5.2.2.02,6]undeca‐4,10‐dien‐8‐ones. Photochemical oxa‐di‐π‐methane (ODPM) rearrangements and 1,3‐acyl shifts of the Diels–Alder adducts are
利用以下化学方法描述了一种从2-甲氧基苯酚高效而短时间地进入多官能化线性三喹烷的方法。由2-甲氧基苯酚衍生的被掩蔽的邻苯二甲醌与环戊二烯的狄尔斯-阿尔德反应与三环[5.2.2.0 2,6 ] undeca-4,10-dien-8-ones反应。研究了Diels-Alder加合物的光化学氧杂二甲甲烷(ODPM)重排和1,3-酰基转移。ODPM重排的产物通过使用O-锡烷基酮基缩酮进一步转化为线性三喹烷。从2-甲氧基-4-甲基苯酚分9步完成该高效策略在(±)-Δ9 (12)-癸烯烯全合成中的应用,总收率为20%。