反应详情

tert-Butyl (4-{[4-(trifluoromethyl)phenyl]thio}cyclohexyl)carbamate (0.38 g, 1.01 mmol) was dissolved in THF:MeOH 8:2 (10 ml) and HCl in 1,4-dioxane (4M, 2 ml) was added. The reaction mixture was stirred at rt for 15 h, and then evaporated. The crude product was diluted with EtOAc (100 ml), washed with a mixture of saturated aqueous Na2CO3 and water (1:2, 100 ml) and water (2×100 ml). The organic layer was dried over Na2SO4, filtrated and evaporated to yield the title compound (0.27 g, 97%) as a 50:50 mixture of cis and trans isomers. 1H-NMR (CDCl3, 500 MHz): δ 7.56-7.48 (m, 4H), 7.46-7.39 (m, 4H), 3.59-3.52 (m, 1H), 3.17-3.07 (m, 1H), 2.90-2.79 (m, 1H), 2.78-2.68 (m, 1H), 2.13-2.03 (m, 2H), 1.99-1.14 (m, 18H); 13C-NMR (CDCl3, 125 MHz): δ 141.6, 141.0, 130.2, 129.7, 125.9, 125.9, 50.0, 48.9, 45.0, 44.0, 36.6, 32.3, 32.1, 30.5, 29.2, 29.0, 28.6.

1. customevaporated
2. additionThe crude product was diluted with EtOAc (100 ml)
3. washwashed with a mixture of saturated aqueous Na2CO3 and water (1:2, 100 ml) and water (2×100 ml)
4. dry with materialThe organic layer was dried over Na2SO4
5. filtrationfiltrated
6. customevaporated