78509-11-2Relevant academic research and scientific papers
CYCLOADDITION REACTIONS OF 1,3-BENZOTHIAZINES-I. REACTIONS OF 2-PHENYL-4H- AND 4-PHENYL-2H-1,3-BENZOTHIAZINE DERIVATIVES WITH SUBSTITUTED ACETYL CHLORIDES
Fodor, L.,Szabo, J.,Sohar, P.
, p. 963 - 966 (2007/10/02)
6,7-Dimethoxy-2-phenyl-4H-1,3-benzothiazine (1) and 6,7-dimethoxy-4-phenyl-2H-1,3-benzothiazine (2) react with substituted acetyl chlorides to give linearly, and new angularly condensed β-lactam derivatives (4,5).Heating of the latter compounds with hydro
