underwent an unexpected isomerization to oxa-pentacycloundecanones 2 and 10, respectively, under flash vacuum thermolysis conditions using various solid acid catalysts. The structure of a derivative of 2 (R=CO2Et) has been elucidated by X-ray diffraction analysis. A tentative mechanism for the formation of 2 from 1 is proposed.
Tricyclodecenone外切-和内-
环氧化物1和9进行意想不到的异构化氧杂pentacycloundecanones 2和10分别使用各种固体酸催化剂闪热解真空条件下。衍
生物的结构2(R = CO 2 ET)已经通过X射线衍射分析阐明。提出了一种尝试从1形成2的机理。