88701-90-0

Upstream product

• 1189-71-5 isocyanate de chlorosulfonyle 
• 19152-36-4 (E)-2'-hydroxy-3,4-dimethoxychalcone 
• 79140-20-8 2'-hydroxy-3,4-dimethoxychalcone 

Downstream Products

• 88702-12-9 4-[(E)-2-(3,4-Dimethoxy-phenyl)-vinyl]-3,4-dihydro-benzo[e][1,2,3]oxathiazine 2,2-dioxide 
• 88702-07-2 9b-[(E)-2-(3,4-Dimethoxy-phenyl)-vinyl]-1,3-diphenyl-1,9b-dihydro-5-oxa-4-thia-1,2,3a-triaza-cyclopenta[a]naphthalene 4,4-dioxide 
• 119867-74-2 9b-[(E)-2-(3,4-Dimethoxy-phenyl)-vinyl]-1,9b-dihydro-5-oxa-4-thia-2,3,3a-triaza-cyclopenta[a]naphthalene 4,4-dioxide 

Relevant academic research and scientific papers

Reaction of 4-Styryl-1,2,3-benzoxathiazine 2,2-Dioxides with Diazomethane: Synthesis of a Novel Heterocyclic System

A new class of heterocyclic system, 3a-f, has been synthesized by reacting diazomethane with 4-styryl-1,2,3-benzoxathiazine 2,2-dioxides 1a-f.Diazomethane adds to the =C=S group of these compounds.

Synthesis of 4-Styryl-1,2,3-benzoxathiazine 2,2-Dioxides, Naphth-1,2,3-oxathiazine 2,2-dioxide and 1,3-Dipolar Cycloaddition of 1,3-Diphenylnitrilimine to 4-Styryl-1,2,3-benzoxathiazine 2,2-Dioxides

4-Styryl-1,2,3-benzoxathiazine 2,2-dioxide (4a-e) have been synthesized by the reaction of chlorosulphonyl isocyanate with 2'-hydroxychalcone (1a-e). 2-Hydroxy-1-napthaldehyde reacts with chlorosulphonyl isocyanate to give naphth-oxathiazine 2,2-dioxide (9).The 1,3-dipolar cycloaddition of 1,3-diphenylnitrilimine to 4a-e gives the hitherto unreported heterocyclic system (14)