190521-44-9

Upstream product

• 190520-68-4 2-dimethylaminocarbonyl-5-nitrobenzenesulfonamide 
• 89795-77-7 2-sulfonamido-4-nitrobenzoic acid 
• 22952-26-7 2-carboxy-5-nitrobenzenesulfonic acid 
• 22952-24-5 6-nitrosaccharin 
• 90110-01-3 2-chlorosulfonyl-4-nitro-benzoyl chloride 
• 154712-47-7 2-methoxycarbonyl-5-nitrobenzenesulfonyl chloride 
• 2297-01-0 methyl 2-sulfonamido-4-nitrobenzoate 

Downstream Products

• 190520-75-3 N,N-dimethyl-4-amino-2-[[[[(4,6-dimethoxypyrimidin-2-yl)amino]carbonyl]amino]sulfonyl]benzamide 
• 173159-94-9 N,N-dimethyl-2-sulfonamido-4-formylaminobenzamide 

Relevant academic research and scientific papers

Synthesis method of foramsulfuron intermediate

The invention discloses a synthesis method of a foramsulfuron intermediate, which comprises the following steps of: carrying out one-pot chlorination, alcoholysis and ammonolysis cyclization on 2-sulfo-4-nitrobenzoic acid used as a starting raw material t

Processes for preparing aminophenylsulfonylureas, and intermediates therefor

The invention relates to the preparation of compounds (I) in which A=H or acyl and R1, R21, R3, R, n, X, Y and Z are as defined in claim 1 by halogenation and rearrangement of compounds (II) (optionally salt) to