4-Methoxypteridin-2-amine → HCID 13235978, compound
Reaction equation
[NH2:1][C:2]1[N:11]=[C:10]([O:12][CH3:13])[C:9]2[C:4](=[N:5][CH:6]=[CH:7][N:8]=2)[N:3]=1.[Cl:14][C:15]([Cl:25])([Cl:24])[CH2:16][O:17][S:18]([N:21]=[C:22]=[O:23])(=[O:20])=[O:19]>C(Cl)Cl>[CH3:13][O:12][C:10]1[C:9]2[C:4](=[N:5][CH:6]=[CH:7][N:8]=2)[N:3]=[C:2]([NH:1][C:22]([NH:21][S:18]([O:17][CH2:16][C:15]([Cl:25])([Cl:24])[Cl:14])(=[O:19])=[O:20])=[O:23])[N:11]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
To a suspension of 0.88 g (0.005 mol) of 2-amino-4-methoxypteridine in 40 ml of absolute methylene chloride were added with stirring to 1.35 g (0.053 mol) of 2,2,2-trichloroethoxysulfonyl isocyanate. After about 10 minutes, a clear solution had formed and it was heated to reflux. After 10 minutes, the mixture was evaporated to dryness and the residue was treated with diisopropyl ether and a little acetone. The mixture was vacuum filtered and the product was dried to obtain 2.05 g (95% of theory) of N-(4-methoxypteridin-2-yl)-N'-(2,2,2-trichloroethoxysulfonyl)-urea in the form of yellow crystals melting at 93° C. (decomp.).