The present paper describes the enantioface-differentiaing epoxidation of alkylidenemalononitriles with molecular oxygen, catalyzed by chiral tertiary amines. In the light of the by-product formation, the reaction path was concluded to involve intermolecular nucleophilic attack of a hydroperoxide intermediate catalyzed by a chiral tertiary amine. A similar epoxidation was demonstrated with cumylhydroperoxide in the presence of nicotine.
本文介绍了手性叔胺催化亚烷基
丙二腈与分子氧的对映面差异环氧化反应。根据副产物的形成情况,推断反应路径涉及手性叔胺催化的
过氧化氢中间体的分子间亲核反应。在
尼古丁存在的情况下,过氧化积酰也发生了类似的环氧化反应。