AROMATIC DERIVATIVES OF 2H-PYRIMIDINO-1,4-THIAZINE

Article abstract of DOI:10.1007/BF00663870

5-R¹-3-(4-R-Phenyl)-2H-pyrimidino<5,6-b>-1,4-thiazines 1 = N(CH3)2 or OCH3>, which exist primarily in the 2H form, were synthesized by the reaction of ο-bromoacetophenones with 4-R¹-5-amino-6-thiopyrimidines.