Gold-Catalyzed Direct Activation of Allylic Alcohols in the Stereoselective Synthesis of Functionalized 2-Vinyl-Morpholines
作者:Marco Bandini、Magda Monari、Alessandro Romaniello、Michele Tragni
DOI:10.1002/chem.201002606
日期:2010.12.27
Alcohol versus alcohol: A highly stereocontrolled synthesis of substituted morpholines is realized by means of gold‐catalyzed dehydrative allylic cyclization of diols (see scheme for one example; segphos = 5,5′‐bis[di(3,5‐di‐tert‐butyl‐4‐methyoxyphenyl)phosphine]‐4,4′‐bi‐1,3‐benzodioxole). The present methodology represents one of the few examples of enantioselective gold‐catalyzed transformations
醇与醇:一个高度立体控制取代的吗啉的合成是通过二醇的金催化的脱水环化烯丙基(参见,一个示例方案来实现的; SEGPHOS = 5,5'-双[二(3,5-二-叔-丁基-4-甲氧基苯基)膦] -4,4'-bi-1,3-苯并二恶唑)。本方法学代表了涉及未活化烯烃的对映选择性金催化转化的少数实例之一。