7,7-Dimethyltricyclo[3.3.0.02,8]octan-3-ones as synthetic intermediates. IV. A further examination of cyclopropane ring opening in the tricyclo[3.3.0.02,8]octan-3-one system.
作者:Takeshi IMANISHI、Masayuki YAMASHITA、Munetaka MATSUI、Tetsuaki TANAKA、Chuzo IWATA
DOI:10.1248/cpb.37.3114
日期:——
The cyclopropane ring opening reaction of several tricyclo[3.3.0.02, 8]octan-3-ones (8a-c) was examined. Under acid-catalyzed substitutional conditions, compounds 8a and 8b gave predominantly the bicyclo[3.2.1]octan-3-one derivatives (9a, b), while compound 8c afforded exclusively the bicyclo[3.3.0]octan-3-one (10c). A candidate precursor for the synthesis of quadrone, 13, was also successfully prepared.
研究了几种三环[3.3.0.0^2,8]辛烯-3-酮(8a-c)的环丙烷开环反应。在酸催化的取代条件下,化合物8a和8b主要生成双环[3.2.1]辛烯-3-酮衍生物(9a、b),而化合物8c则独家生成双环[3.3.0]辛烯-3-酮(10c)。此外,还成功合成了四环化合物的候选前体13。