Abstrakt:
The review is focused on a diverse use of polarized ethylenes bearing an alkoxy,
halogen or amino group in the reaction with S-, N- ambident nucleophiles
(thioamides, thioureas, thiosemicarbazides, thiocarbamates, dithiocarbamates)
to give pyrimidine and 1,3-thiazine ring. Other possibilities of synthesis of these
heterocyclic scaffolds are also reported.