INVESTIGATIONS IN THE SERIES OF HETEROCYCLES. 55. SYNTHESIS AND SOME REACTIONS OF 2-ARYL-4-HALO-6-OXO-1,3-THIAZINES

Article abstract of DOI:10.1007/BF00503595

The reaction of 2-aryl-4-hydroxy-6-oxo-1,3-thiazines with Vilsmeier's reagent results in the formation of a mixture of 2-aryl-6-oxo-4-chloro-1,3-thiazines and their 5-formyl analogs.Reactions involving the nucleophilic replacement of the halogen and nucle