[ClH:1].[CH3:2][O:3][C:4]1[CH:5]=[C:6](/[CH:12]=[C:13](/[C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][N:17]=2)\[C:14]#[N:15])[CH:7]=[CH:8][C:9]=1[O:10][CH3:11]>C(#N)C>[ClH:1].[CH3:2][O:3][C:4]1[CH:5]=[C:6](/[CH:12]=[C:13](/[C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][N:17]=2)\[C:14]#[N:15])[CH:7]=[CH:8][C:9]=1[O:10][CH3:11]0.1N Hydrochloric acid (4.1 mL) was added to Compound 45 (100 mg), and acetonitrile (20 mL) was added to the mixture, to thereby dissolve the mixture. The solution was stirred in the dark at room temperature for 1 hour, and the solvent was evaporated to dryness. The precipitated crystals were thoroughly dried, to thereby yield the target product (yield: 112 mg, 99%).
Wird geladen…