371965-85-4Relevant articles and documents
Novel syntheses of 2,3-dihydro-1,5-benzothiazepin-4(5H)-ones and 2H-1,4-benzothiazin-3(4H)-ones
Katritzky,Odens,Zhang,Rostek,Maender
, p. 6792 - 6796 (2007/10/03)
Nucleophilic additions of α-mercaptoalkanoate esters and β-mercaptoalkanoate acids to benzoquinone diimines, followed by cyclization with trifluoroacetic acid or 1,3-dicyclohexylcarbodiimide (DCC), provide novel, high-yielding syntheses of 2H-1,4-benzothiazin-3(4H)-ones (3a-f) and 2,3-dihydro-1,5-benzothiazepin-4(5H)-ones (5a-c), respectively.