Study of the reaction of imines derived from (R)-glyceraldehyde with Danishefsky's diene
作者:Ramón Badorrey、Carlos Cativiela、María D Díaz-de-Villegas、JoséA Gálvez
DOI:10.1016/s0040-4020(99)00377-4
日期:1999.6
tandem Mannich-Michael reaction with Danishefsky's diene in the presence of Lewis acids. The temperature, catalyst and solvent dependence of the product ratio is described. Under zinc iodide-catalysed conditions in acetonitrile at −20°C, double stereodifferentiation using (R)-2,3-di-O-benzylglyceraldehyde (S)-N-α-(methylbenzyl)imine as starting material was successful and the reaction occurred with good
在路易斯酸存在下,衍生自便利保护的(R)-甘油醛的N-苄基嘧啶与Danishefsky's二烯进行非对映选择性串联Mannich-Michael反应。描述了产物比率对温度,催化剂和溶剂的依赖性。在乙腈于-20°C在碘化锌催化的条件下,以(R)-2,3-二-O-苄基甘油醛(S)-N - α-(甲基苄基)亚胺为起始原料成功进行双立体分化,反应成功收率高,完全非对映选择性。