DERIVATIVES OF HETEROCYCLIC α-IMINOCARBOXYLIC ACIDS. 1. SYNTHESES OF HYDRAZIDES OF HETEROCYCLIC α-IMINOCARBOXYLIC ACIDS AND THEIR HYDRAZONES

Article abstract of DOI:10.1007/BF00534398

By the interaction of esters of L-proline, L-thioproline, pipecolic acid, and tetrahydro-1,4-thiazine-3-carboxylic acid with hydrazine, the corresponding hydrazides were obtained, which react with equimolar quantities of carbonyl compounds to form hydrazo