Ammonium Chloride → HCID 66914826、化合物
反応式
[CH3:1][N:2]1[C:7](=O)[CH2:6][N:5]2[CH:9]=[C:10]([C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=3)[CH:11]=[C:4]2[CH2:3]1.[Cl-].[NH4+]>O1CCCC1>[CH3:1][N:2]1[CH2:7][CH2:6][N:5]2[CH:9]=[C:10]([C:12]3[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=3)[CH:11]=[C:4]2[CH2:3]1参加物
4
実験手順
Borane-dimethyl sulfide complex (0.25 mL, 2.6 mmol) was added to cold tetrahydrofuran (6 mL) and stirred for 10 min. 2-Methyl-7-phenyl-1,2-dihydropyrrolo[1,2-a]pyrazin-3-one (180 mg, 0.8 mmol) was added, and the reaction mixture allowed to warm to room temperature and stirred for 3 h. The mixture was poured slowly into saturated ammonium chloride solution and extracted with ethyl acetate. The organic layer was washed with water then brine, dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to give the crude compound. Purification by column chromatography over silica gel (100-200 mesh) using 8% ethyl acetate in petroleum ether afforded 2-methyl-7-phenyl-3,4-dihydro-1H-pyrrolo[1,2-a]pyrazine (110 mg, 64%) as a solid.