Hydrochloric Acid → HCID 58827078、化合物

反応式

C[O:2][C:3]([C:5]1([C:13]2[CH:18]=[CH:17][C:16]([C:19]#[N:20])=[CH:15][C:14]=2[Cl:21])[N:9]2[CH:10]=[N:11][CH:12]=[C:8]2[CH2:7][CH2:6]1)=[O:4].[Li+].[OH-].Cl>C1COCC1.O>[Cl:21][C:14]1[CH:15]=[C:16]([C:19]#[N:20])[CH:17]=[CH:18][C:13]=1[C:5]1([C:3]([OH:4])=[O:2])[N:9]2[CH:10]=[N:11][CH:12]=[C:8]2[CH2:7][CH2:6]1

参加物

実験手順

5-(2-chloro-4-cyanophenyl)-6,7-dihydro-5H-pyrrolo[1,2-c]imidazole-5-carboxylic acid methyl ester (0.6 g, 2.0 mmol) is dissolved in THF/water 3:2 (20 mL) and to it is added LiOH (0.17 g, 4.0 mmol). The mixture is stirred at room temperature for 2 h before being neutralized to pH 6 with 1M HCl. The solution is evaporated to dryness to give acid, 5-(2-chloro-4-cyanophenyl)-6,7-dihydro-5H-pyrrolo[1,2-c]imidazole-5-carboxylic acid as a solid. MS (ESI) m/z 288.2, 290.2 (M+H); 1H NMR (400 MHz, MeOD) (ammonium salt) δ ppm 2.64-2.74 (m, 1 H), 2.77-2.86 (m, 1 H), 2.94-3.02 (m, 1 H), 3.74 (ddd, J=13.1, 9.1, 8.0 Hz, 1 H), 6.74 (d, J=8.1 Hz, 1 H), 6.85 (s, 1 H), 7.59 (dd, J=8.1, 1.5 Hz, 1 H), 7.84 (d, J=1.8 Hz, 1 H), 7.91 (s, 1 H).