N-3-oxoalkylamides and-thioamides in the synthesis of heterocyclic compounds. 6. The effect of structural factions on the regiodirection of cyclization of pyridinium derivatives of n-(3-oxoalkyl)chloroacetamides. Structure of 1-(4-hydroxy-4,6,6-trime

摘要

The structure of 1-(4-hydroxy-4,6,6-trimethyl-2-oxo-3-piperidyl) pyridinium chloride has been established. Reasons have been found influencing the regiodirection of cyclization of pyridinium derivatives of N-(3-oxoalkyl)chloroacetamides.