The application of vinylogous iminium salts and related synthons to the regiocontrolled preparation of 2,3- and 2,5-disubstituted pyrroles
作者:John T Gupton、Scott A Petrich、Lana L Smith、Marc A Bruce、Phong Vu、Karen X Du、Eric E Dueno、Claude R Jones、James A Sikorski
DOI:10.1016/0040-4020(96)00338-9
日期:1996.5
1-substituted vinamidinium salts with sarcosine ethyl ester produced 2,3-disubstituted pyrroles; a similar reaction with glycine ethyl ester gave 2,5-disubstituted pyrroles. Reactions of related three-carbon synthons with sarcosine and glycine were studied under basic, neutral and acidic conditions which demonstrated the utility of these derivatives for the regiocontrolled preparation of disubstituted pyrroles
1-取代的乙烯基ami盐与肌氨酸乙酯的反应生成2,3-二取代的吡咯;与甘氨酸乙酯的类似反应得到2,5-二取代的吡咯。在碱性,中性和酸性条件下研究了相关的三碳合成子与肌氨酸和甘氨酸的反应,证明了这些衍生物可用于区域控制的二取代吡咯的制备。