5-[4-(3-(1,1-dimethylethoxy)-3-oxopropyl)phenyl]-2-(1,1-dimethylethyl)-2H-tetrazole → 4-[2-(1,1-dimethylethyl)-2H-tetrazole-5-yl]benzenepropanoic acid
反応式
CC(C)([O:4][C:5](=[O:23])[CH2:6][CH2:7][C:8]1[CH:13]=[CH:12][C:11]([C:14]2[N:15]=[N:16][N:17]([C:19]([CH3:22])([CH3:21])[CH3:20])[N:18]=2)=[CH:10][CH:9]=1)C>FC(F)(F)C(O)=O>[CH3:22][C:19]([N:17]1[N:16]=[N:15][C:14]([C:11]2[CH:12]=[CH:13][C:8]([CH2:7][CH2:6][C:5]([OH:23])=[O:4])=[CH:9][CH:10]=2)=[N:18]1)([CH3:20])[CH3:21]参加物
3
実験手順
5-[4-(3-(1,1-dimethylethoxy)-3-oxopropyl)phenyl]-2-(1,1-dimethylethyl)-2H-tetrazole (1.0 g. 3.7 mmol) was dissolved in trifluoroacetic acid (14 mL) and stirred at room temperature under argon for 12 hours. The mixture was concentrated and then dissolved in water (35 ml). After adding enough sat. NaHCO2 to raise the pH to 8, the solution was washed with diethyl ether (2×10 mL). The aqueous layer was acidified to pH 3 with IN HCl and the product was collected by suction filtration to give 4-[2-(1,1-dimethylethyl)-2H-tetrazole-5-yl]benzenepropanoic acid (0.7 g. 3.1 mmol) in 84% yield, mp. 88°-90° C.