Diastereomeric sulfinates derived from (l)-N-methylephedrine: synthesis, applications and rearrangements
作者:Józef Drabowicz、Bogdan Bujnicki、Paolo Biscarini、Marian Mikołajczyk
DOI:10.1016/s0957-4166(99)00336-5
日期:1999.8
The reaction of sulfinyl chlorides with (l)-N-methylephedrine alone or in the presence of tertiary amines was found to produce diastereomeric sulfinates with diastereomeric purities up to 90%. The diastereomeric ratio is strongly influenced by the nature of substituents on the sulfinyl chlorides and to some extent by the reaction conditions. In a few cases, the pure diastereomers were isolated by chromatography
发现亚磺酰氯与(1)-N-甲基麻黄碱单独或在叔胺存在下的反应产生具有高达90%的非对映体纯度的非对映体亚磺酸盐。非对映体比率受亚磺酰氯上取代基的性质的强烈影响,并且在一定程度上受反应条件的影响。在少数情况下,通过色谱法分离纯的非对映异构体,并用于制备旋光性亚砜。还讨论了硅胶催化的亚磺酸盐重排为相应的砜。