This paper reports the desymmetrization of cyclohexadienones through stereoselective intramolecular aza-Michael addition with a tethered chiral sulfinamide nucleophile. The reaction was facilitated by phase-transfer catalysis and produced various nitrogen-containing bicyclic compounds with a yield of up to 93% and a diastereomeric ratio of up to >20:1.
本文报道了通过与束缚的手性亚磺酰胺亲核试剂进行立体选择性分子内氮杂迈克尔加成来实现环
己二烯酮的去对称化。该反应通过相转移催化促进,生成各种含氮
双环化合物,收率高达93%,非对映异构体比例高达>20:1。