反应详情

To a stirred solution of tert-butyl ((5-(4-((1R,2S)-2-(2,2-dichloroacetamido)-3-fluoro-1-hydroxypropyl)phenyl)-1,3,4-thiadiazol-2-yl)methyl)carbamate (100 mg, 0.203 mmol) in CH2Cl2 (10 mL) is added trifluoroacetic acid (1.0 mL). After 2 hours the reaction mixture is concentrated in vacuo and the residue washed with diethyl ether. The residue is dissolved in 10% methanol in CH2Cl2 and evaporated to dryness, washed with n-pentane, dried under vacuum to give the title compound (108 mg): 1H-NMR (400 MHz, DMSO-d6) δ 4.27-4.28 (m, 1H), 4.31-4.35 (m, 0.5H), 4.43-4.47 (m, 0.5H), 4.59-4.61 (m, 0.5H), 4.64 (s, 2H), 4.70-4.74 (m, 0.5H), 4.96 (t, J=2.76 Hz, 1H), 6.10 (d, J=4.28 Hz, 1H), 6.48 (s, 1H), 7.54 (d, J=8.32 Hz, 2H), 7.94 (d, J=8.32 Hz, 2H), 8.60 (bs, 2H), 8.64 (d, J=9.12 Hz, 1H). LC-Ms (m/z): [M+H]=393.10.

1. concentrationAfter 2 hours the reaction mixture is concentrated in vacuo
2. washthe residue washed with diethyl ether
3. dissolutionThe residue is dissolved in 10% methanol in CH2Cl2
4. customevaporated to dryness
5. washwashed with n-pentane
6. customdried under vacuum