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