pressure conditions is synthetically impractical, the reaction was greatly improved under 10000 bar to give six products with 95% conversion (1 bar=105 Pa): the major products obtained in 66% yield were 9α- and 9β-ethoxybicyclo[3.2.2]nona-3,6-dien-2-ones, Diels–Alder adducts, which were accompanied by other two 8-ethoxy derivatives and two [8+2] cycloadducts. 2-Methoxy- and 2-chlorotropones similarly gave
虽然在常压条件下将托酮热环加成乙氧基
乙烯在合成上是不切实际的,但在 10000 bar 下反应得到很大改善,得到 6 种转化率 95%(1 bar=105 Pa)的产物:以 66% 产率获得的主要产物为 9α-和 9β-乙氧基双环[3.2.2]nona-3,6-dien-2-ones,Diels-Alder 加合物,伴随着其他两种 8-乙氧基衍
生物和两种 [8+2] 环加合物。2-甲氧基-和2-
氯托
酮类似地在高压条件下产生更好的结果。这些 Diels-Alder 加合物的 13CNMR 谱提供了有关结构解析的有用信息。