A method for the catalytic, enantioselective, intramolecular sulfenoamination of alkenes with aniline nucleophiles has been developed. The method employs a chiral, Lewis basic selenophosphoramide catalyst and a Brønsted acid co-catalyst to promote stereocontrolled C-N and C-S bond formation by activation of an achiral sulfenylating agent. Benzoannulated nitrogen-containing heterocycles such as indolines
已经开发了用
苯胺亲核试剂催化烯烃的对映选择性分子内磺酰胺化的方法。该方法采用手性路易斯碱性
硒代
磷酰胺催化剂和布朗斯台德酸助催化剂,通过非手性亚磺化剂的活化来促进立体控制的CN和CS键的形成。制备具有高至优异对映选择性的苯并环化的含氮杂环,如二氢
吲哚,
四氢喹啉和四氢苯并ze庚因。研究并解释了底物依赖性立体确定th离子的形成或俘获过程中亲核试剂和烯烃的链长和电子密度对反应性,位点选择性和对映选择性的影响。