58249-29-9

Upstream product

• 58249-27-7 2-benzoyl-2,3-dihydro-benzo[e][1,3]thiazin-4-one 
• 61018-80-2 (4-hydroxy-1,1-dioxo-1,2-dihydro-1λ⁶-benzo[e][1,2]thiazin-3-yl)-phenyl-methanone 
• 49549-92-0 2-(2-oxo-2-phenyl-ethyl)-benzo[d]isothiazol-3-one 
• 70-11-1 α-bromoacetophenone 
• 58249-25-5 sale sodico del 1,2-benzisotiazolin-3-one 

Relevant academic research and scientific papers

A novel photoisomerzation of 1,2-benzothiazine 1,1-dioxides to 1,3-benzothiazine 1,1-dioxides

(Chemical Equation Presented) A novel facile photoconversion of 4-hydroxy-1,2-bezothiazine 1,1-dioxides (3a-e) into 4-oxo-1,3-2H-benzothiazine 1,1-dioxides (4a-e) and 4-hydroxy-2-methyl-N-(pyridin-2-yl)-2H-1,2- benzothiazine-3-carboxamide 1,1-dioxide (PRX) into N-methyl saccharin (2) upon 254 nm irradiation in methanol or acetonitrile is reported. The structures of the products have been elucidated by spectroscopic methods and single crystal X-ray structure determination for 4a and 4d.