SYNTHESIS OF ENAMINONES BEARING 1, 4-BENZOTHIAZINE-2-ONE CORE

Abstract

Enaminones bearing a 1, 4-benzoxazine-2-one A or quinoxaline-2(1H)-one B core are an intensively investigated class of heterocyclic compounds. Interest in them is due to the simplicity of their synthesis and purification, the availability of starting materials and the possibility of their synthesis under mild green conditions. Because of their availability in gram-scale quantities, these compounds were thoroughly investigated for the possibility of practical use. They also proved themselves to be versatile and available building blocks for the synthesis of various heterocyclic systems. That’s why investigations on properties of their 1-thia analogs, 1, 4-benzothiazin-2-ones C, is promising.This work was supported by the Ministry of Science and Higher Education of the Russian Federation (FSNF-2020-0008), Russian Foundation for Basic Research (project no. 17-43-590035) and the Government of Perm Krai