Double Asymmetric Induction in Intramolecular C-H Insertion Reactions of<i>α</i>-Diazo<i>β</i>-Keto Esters
作者:Shun-ichi Hashimoto、Nobuhide Watanabe、Katsuhiro Kawano、Shiro Ikegami
DOI:10.1080/00397919408010251
日期:1994.12
Abstract A new double asymmetric induction in C-C bond formation has been achieved by the use of dirhodium(II) tetrakis[N-phthaloyl-(R) or (S)-phenylalaninate] as a homochiral catalyst in intramolecular C-H insertion of α-diazo β-keto esters of homochiral alcohols. The matched combination of the (+)-neomenthyl esters and the catalyst derived from (R)-phenylalanine produces, after a removal of the ester
摘要 通过使用四[N-邻苯二甲酰基-(R)或(S)-苯丙氨酸二铑]作为α-重氮β分子内CH插入的同手性催化剂,在CC键形成中实现了一种新的双不对称诱导。 -同手性醇的酮酯。(+)-新薄荷酯和衍生自(R)-苯丙氨酸的催化剂的匹配组合在去除酯基后产生高达80%ee的旋光3-取代环戊酮。