diastereoselectivity and the chemoselectivity (epoxidation versus allylic oxidation) attained in the oxidation of cyclopentenols using dimethyldioxirane and methyl(trifluoromethyl)dioxirane is reported. The results indicate that with both dioxiranes diastereoselective epoxidation of allylic cyclopentenols is accompanied by competitive allylic oxidation to the corresponding enone; for the latter, a likely
报道了使用
二甲基二环氧乙烷和甲基(三
氟甲基)
二环氧乙烷在
环戊烯醇的氧化中获得的非对映选择性和
化学选择性(环氧化与烯丙基氧化)的比较。结果表明,对于两种二恶英,烯丙基
环戊烯醇的非对映选择性环氧化都伴随着竞争性烯丙基氧化成相应的烯酮。对于后者,提出了可能的理由。