Functional-Group-Tolerant, Nickel-Catalyzed Cross-Coupling Reaction for Enantioselective Construction of Tertiary Methyl-Bearing Stereocenters
作者:Hanna M. Wisniewska、Elizabeth C. Swift、Elizabeth R. Jarvo
DOI:10.1021/ja4034999
日期:2013.6.19
The first Negishi nickel-catalyzed stereospecific cross-coupling reaction of secondary benzylic esters is reported. A series of traceless directing groups is evaluated for ability to promote cross-coupling with dimethylzinc. Esters with a chelating thioether derived from commercially available 2-(methylthio)acetic acid are most effective. The products are formed in high yield and with excellent stereospecificity
报道了第一个根岸镍催化仲苄酯的立体定向交叉偶联反应。评估了一系列无痕导向基团促进与二甲基锌交叉偶联的能力。由市售的 2-(甲硫基)乙酸衍生的具有螯合硫醚的酯是最有效的。形成的产品收率高,且具有优异的立体定向性。该反应可耐受多种官能团,包括烯烃、炔烃、酯、胺、酰亚胺以及 O-、S- 和 N- 杂环。这种转化的实用性在视黄酸受体激动剂和脂肪酸酰胺水解酶抑制剂的对映选择性合成中得到强调。