Methyl Acrylate → HCID 135574088、化合物
反応式
[C:1]([O:5][CH3:6])(=O)[CH:2]=[CH2:3].[NH2:7][C:8]1[NH:9][C:10]2[CH:16]=[C:15]([O:17][CH3:18])[C:14]([O:19]C)=[CH:13][C:11]=2[N:12]=1>CO>[CH3:6][O:5][C:1]1[C:15]([O:17][CH3:18])=[CH:16][C:10]2[N:9]=[C:8]3[NH:7][C:14](=[O:19])[CH2:13][CH2:11][N:12]3[C:3]=2[CH:2]=1参加物
4
実験手順
Methyl acrylate (6.1 g.) was added to a solution of 2-amino-5,6-dimethoxybenzimidazole (12.2 g.) in methanol (70 ml.) and the mixture was stirred for 90 hours. The crystalline precipitate was separated by filtration and washed with ethanol and then ether to give 7,8-dimethoxy-3,4-dihydropyrimido[1,2-a]-benzimidazol-2(1H)-one (10.3 g.), m.p. 264°-5° C.; microanalysis, C12H13N3O3 requires: C, 58.3; H, 5.3; N, 17.0%; found: C, 58.0; H, 5.2; N, 16.8%; NMR: δ2.82 (t, 2 protons, C3-H2); 3.72 (s, 3 protons, CH3O); 3.76 (s, 3 protons, CH3O); 4.15 (t, protons C4 -H2); 7.00 (s, 1 proton, C6-H); 7.04 (s, 1 proton, C9-H).