catalyzed by Cp2ZrCl2 was performed for the first time to give previously unknown aluminacyclopentanes in ∼90% yield; these products were converted in situ to carbo- and heterocyclic (5α)-cholestane derivatives.
在 Cp2ZrCl2 的催化下,(3β,5α)-3-
乙烯基胆甾烷和 (3α,5α)-3-烯丙基胆甾烷与 Et3Al 的催化环铝反应首次得到了以前未知的氧化铝
环戊烷,产率约为 90%;这些产品被原位转化为碳-和杂环 (5α)-胆甾烷衍
生物。