893004-65-4

Upstream product

• 201230-82-2 carbon monoxide 
• 104-94-9 4-methoxy-aniline 
• 320-51-4 4-chloro-3-trifluoromethyl-aniline 
• 327-78-6 4-chloro-3-(trifluoromethyl)phenyl isocyanate 

Downstream Products

• 1130115-44-4 N-(4-chloro-3-(trifluoromethyl)phenyl)-N'-(4-(2-(N-(methyl-d₃)aminoformyl)-4-pyridyloxy)phenyl)urea 
• 1129683-83-5 4-[ ({[4-chloro-3-(trifluoromethyl)phenyl]amino}carbonyl)amino]phenol 
• 1333386-17-6 4-(4-(3-(4-chloro-3-trifluoromethylphenyl)ureido)phenoxyl)-2-(N-1’,1’,1’-trideuteromethyl)pyridine amide p-toluenesulfonate 

Relevant academic research and scientific papers

METHOD AND PROCESS FOR PREPARATION AND PRODUCTION OF DEUTERATED OMEGA-DIPHENYLUREA

Methods and processes for preparation and production of deuterated ω-diphenylurea are disclosed. Especially, a kind of deuterated ω-diphenylurea compounds which can inhibit phosphokinase and the preparation method of N-(4-chloro-3-(trifluoromethyl)phenye-N′-(4-(2-(N-d3-methylcarbamoyl)-4-pridinyloxy)phenyl)urea are disclosed. The said deuterated diphenylurea compounds can be used for treating or preventing tumors and relative diseases.

Catalytic oxidative carbonylation of arylamines to ureas with W(CO) 6/I2 as catalyst

The oxidative carbonylation of aniline to N,N'-diphenylurea was carried out by using W(CO)6 as the catalyst, I2 as the oxidant, CO as the carbonyl source and 4-(dimethylamino)pyridine (DMAP) as base. The reaction conditions were optimized with respect to different bases, molar ratio of DMAP/iodine, temperature, time, and CO pressure. Various p-substituted arylamines can be converted into the respective symmetrical and unsymmetrical N,N'-disubstituted ureas in moderate to good yields. The reaction demonstrated broad tolerance of functionality.