反应详情

To a solution of cyclohex-1-en-1-ylmethanol (0.6 g, 5.35 mmol) in DCE (5 mL) at 0° C., was added 1 N diethylzinc in hexane (8.56 mL), the reaction mixture was stirred for 10 min, then chloroiodomethane (1.242 ml, 17.12 mmol) was added. The reaction mixture was stirred at 0° C. for 1 h, and then stirred at rt for 16 hr. The reaction was diluted with EtOAc and 1 N HCl, the organic phase was washed with sat. NaCl, dried over anhydrous Na2SO4, filtered and concentrated to yield an oil. The crude product was charged to a 25 g silica gel cartridge which was eluted with a 20 min gradient of 0-40% EtOAc in hexane to afford bicyclo[4.1.0]heptan-1-ylmethanol (0.12 g). 1H NMR (400 MHz, CDCl3) ppm 3.27-3.38 (2H, m), 1.81-1.92 (2H, m), 1.54-1.78 (2H, m), 1.11-1.37 (4H, m), 0.81 (1H, dddd, J=9.16, 7.22, 5.46, 1.51 Hz), 0.46 (1H, dd, J=9.29, 4.52 Hz), 0.24 (1H, t, J=5.02 Hz).

1. stirringThe reaction mixture was stirred at 0° C. for 1 h
2. stirringstirred at rt for 16 hr
3. washthe organic phase was washed with sat. NaCl
4. dry with materialdried over anhydrous Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. customto yield an oil
8. washwas eluted with a 20 min gradient of 0-40% EtOAc in hexane