C(OC([N:8]1[CH2:13][CH2:12][CH:11]([O:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][N:16]=2)[CH2:10][CH2:9]1)=O)(C)(C)C.[ClH:21]>C(OCC)(=O)C>[ClH:21].[ClH:21].[N:16]1[CH:17]=[CH:18][CH:19]=[CH:20][C:15]=1[O:14][CH:11]1[CH2:12][CH2:13][NH:8][CH2:9][CH2:10]11-t-Butoxycarbonyl-4-(2-pyridoxy)piperidine (6.5 g) was treated with a solution of hydrogen chloride in ethyl acetate (110 mL) for 7 h, and the mixture evaporated to give 4-(2-pyridoxy)piperidine dihydrochloride (7.4 g, 90%).
読み込み中…