反应详情

A mixture of (4-hydroxy-4-(3-phenoxyphenyl)cyclohexane-1,1-diyl)bis(methylene) bis(4-methylbenzenesulfonate) (390 mg, 0.612 mmol) and powdered NaOH (320 mg, 8.00 mmol) in THF (5 mL) was refluxed for 24 h. The reaction was cooled to rt, diluted with water, and extracted with EtOAc. The organic layer was dried (MgSO4) and concentrated in vacuo. The crude oil was purified by flash chromatography on SiO2 (0 to 30% EtOAc:hexanes) to afford the title compound (244 mg, 86% yield) as a white solid. LCMS, [M+H]+=465.2. 1H NMR (500 MHz, CDCl3) δ 7.81 (d, J=8.3 Hz, 2H), 7.42-7.36 (m, 2H), 7.37-7.31 (m, 2H), 7.28 (dd, J=9.6, 6.3 Hz, 1H), 7.15-7.08 (m, 3H), 7.03-6.98 (m, 2H), 6.87 (ddd, J=8.1, 2.4, 0.9 Hz, 1H), 3.83 (d, J=1.3 Hz, 2H), 3.77 (s, 2H), 2.49 (s, 3H), 2.09-1.97 (m, 4H), 1.75 (tt, J=9.6, 2.8 Hz, 2H), 1.69-1.60 (m, 2H).

1. temperaturewas refluxed for 24 h
2. extractionextracted with EtOAc
3. dry with materialThe organic layer was dried (MgSO4)
4. concentrationconcentrated in vacuo
5. customThe crude oil was purified by flash chromatography on SiO2 (0 to 30% EtOAc:hexanes)