31848-21-2

Basic information

• Product Name: 1,1-dioxo-2-phenyl-1,4-dihydro-2H-1λ⁶-benzo[e][1,2]thiazin-3-one
• CAS NO: 31848-21-2
• Molecular Weight: 273.312
• Mol File: 31848-21-2.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 1,1-dioxo-2-phenyl-1,4-dihydro-2H-1λ⁶-benzo[e][1,2]thiazin-3-one(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1-dioxo-2-phenyl-1,4-dihydro-2H-1λ⁶-benzo[e][1,2]thiazin-3-one(31848-21-2)
• EPA Substance Registry System: 1,1-dioxo-2-phenyl-1,4-dihydro-2H-1λ⁶-benzo[e][1,2]thiazin-3-one(31848-21-2)

Safety Data

• Hazardous Substances Data: 31848-21-2(Hazardous Substances Data)

Upstream product

• 56776-55-7 N-phenyl-S-(2-methylphenyl) sulfonamide 
• 27350-07-8 (2-phenylsulfamoyl-phenyl)-acetic acid 
• 38948-43-5 2-diazoacetyl-N-phenyl-benzenesulfonamide 

Relevant articles and documents

Cyclization reactions of 2-methylbenzenesulfonamides using N,N-dimethylcarbamoyl chloride, N,N-dimethylthiocarbamoyl chloride, and N,N-dimethylsulfamoyl chloride

Generation of C,N-dianions (2) of 2-methylbenzenesulfonamides (1) followed by addition of N,N-dimethylcarbamoyl chloride gave 2-(N,N-dimethylcarbamoyl)-methylbenzenesulfonamides (3), which were cyclized to 3,4-dihydro-2H-1,2-benzo[e]thiazin-3-one 1,1-dioxides (5). 3-Dimethylamino-2H-1,2-benzo[e]thiazine 1,1-dioxides (7) were obtained in one step by the reaction of 2 with N,N-dimethylthiocarbamoyl chloride. On the other hand, the reaction of 2 with N,N-dimethylsulfamoyl chloride yielded 2,2′-ethylene-bis(benzenesulfonamide)s (10) and / or 2,3-dihydro-1,2-benzothiazole 1,1-dioxides (11).