Chlorophenyl isocyanate → HCID 19973936, compound
Reaction equation
[NH2:1][C:2]([C:11]1[N:16]=[C:15]([O:17][CH3:18])[CH:14]=[C:13]([O:19][CH3:20])[N:12]=1)([CH:8]([CH3:10])[CH3:9])[C:3]([O:5][CH2:6][CH3:7])=[O:4].[Cl:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=1[N:28]=[C:29]=[O:30]>C(OCC)(=O)C>[Cl:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][C:23]=1[NH:28][C:29](=[O:30])[NH:1][C:2]([C:11]1[N:16]=[C:15]([O:17][CH3:18])[CH:14]=[C:13]([O:19][CH3:20])[N:12]=1)([CH:8]([CH3:10])[CH3:9])[C:3]([O:5][CH2:6][CH3:7])=[O:4]Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
A solution of ethyl 2-amino-3-methyl-2-(4,6-dimethoxypyrimidin-2-yl)butanoate (0.556 g) and 2-chlorophenylisocyanate (0.306 g) in ethyl acetate (30 ml) was refluxed for 5 hours, evaporated to dryness, and flash chromatographed on silica gel, eluting with ethyl acetate/60°-80° petroleum ether (1:2). The residual gum was triturated with 60°-80° petroleum ether, to give 0.76 g of the desired product as a white solid, mp 84°-87° C.