Sodium Hydroxide → 2-[5-[(3,5-dibutyl-1H-1,2,4-triazol-1-yl)methyl]-2-pyridinyl]benzoic acid
反応式
[CH2:1]([C:5]1[N:9]=[C:8]([CH2:10][CH2:11][CH2:12][CH3:13])[N:7]([CH2:14][C:15]2[CH:16]=[CH:17][C:18]([C:21]3[CH:31]=[CH:30][CH:29]=[CH:28][C:22]=3[C:23]([O:25]CC)=[O:24])=[N:19][CH:20]=2)[N:6]=1)[CH2:2][CH2:3][CH3:4].[OH-].[Na+]>O>[CH2:1]([C:5]1[N:9]=[C:8]([CH2:10][CH2:11][CH2:12][CH3:13])[N:7]([CH2:14][C:15]2[CH:16]=[CH:17][C:18]([C:21]3[CH:31]=[CH:30][CH:29]=[CH:28][C:22]=3[C:23]([OH:25])=[O:24])=[N:19][CH:20]=2)[N:6]=1)[CH2:2][CH2:3][CH3:4]参加物
4
実験手順
A 1.0 g sample of the crude ethyl 2-[5-[(3,5-dibutyl-1H-1,2,4-triazol-1-yl)methyl]-2-pyridinyl]benzoate from step 8 in 10 mL of water was treated with 3 mL of 10% aqueous sodium hydroxide and stirred at ambient temperature overnight. The reaction mixture was washed with 30 mL of ether and the pH adjusted to six with dilute hydrochloric acid. Purification by reverse phase chromatography (Waters Deltaprep-3000) using isocratic acetonitrile/water (28:72) (0.05% TFA) gave 5 mg of 2-[5-[(3,5-dibutyl-1H-1,2,4-triazol-1-yl)methyl]-2-pyridinyl]benzoic acid: NMR (D2O+NaO3S(CH2)3Si(CH3)3 ]δ0.80 (t, J=7 Hz, 3H), 0.86 (t, J=7 Hz, 3H), 1.19-1.33 (m, 4H), 1.54-1.68 (m, 4H), 2.65 (t, J=7 Hz, 2H), 2.82 (t, J=7 Hz, 2H), 5.43 (s, 2H), 7.45-7.59 (m, 5H), 7.64 (dd, J=8 and 2 Hz, 1H), 8.37-8.45 (m, 1H); MS (FAB) m/e (rel intensity) 393 (80), 375 (30), 212 (40), 182 (100); HRMS. Calc'd for M+Li: 399.2373. Found: 399.2374.