2-Bromophenyl isocyanate → N-(2-hydroxy 3,4-difluorophenyl) N'-(2-bromophenyl)urea
Reaction equation
[OH:1][C:2]1[C:8]([F:9])=[C:7]([F:10])[CH:6]=[CH:5][C:3]=1[NH2:4].[Br:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=1[N:18]=[C:19]=[O:20]>>[OH:1][C:2]1[C:8]([F:9])=[C:7]([F:10])[CH:6]=[CH:5][C:3]=1[NH:4][C:19]([NH:18][C:13]1[CH:14]=[CH:15][CH:16]=[CH:17][C:12]=1[Br:11])=[O:20]Participants
3
Procedure
The urea was prepared from 2-hydroxy 3,4-difluoro aniline (0.290 g, 2 mmol) and 2-bromo phenyl isocyanate (0.4 g) by general Method B. It was purified by dilution with methylene chloride and precipitation with hexane (0.254 g, 37%). EI-MS m/z 343 (M+H)+
Workup
- customIt was purified by dilution with methylene chloride and precipitation with hexane (0.254 g, 37%)
Sources & evidence
- ORD record
- ord-c6f1e3bbc22a4fe9a13f1530cff2139b
- Source dataset
- uspto-grants-2001_04
- Patent number
- US06211373B1
Reaction notes
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