The mixed anhydride method has been used successfully in the synthesis of a series of pyridinecarboxamides. Hydrogenation of some of these products furnished piperidinecarboxarnides which were found to possess excellent local anesthetic properties and low toxicities.
Complexes of silicon and phosphorus chlorides with nitrogen-containing bases as the condensing agents in the synthesis of amides
作者:L. V. Besgubenko、S. E. Pipko、A. D. Sinitsa
DOI:10.1134/s1070363212080099
日期:2012.8
High effectiveness of new condensing agents on the basis of complexes of silicon and phosphorus chlorides with nitrogen-containing bases in the synthesis of amides from carboxylic acids and amines and also in heterocyclization is shown. Factors affecting the readiness of formation of the amide bond and the yields of the final products are established.