反应详情

温度

80 °C

To a solution of 4.1 g (0.033 mol) of o-anisidine in 20 mL DMF, 4.6 g (0.033 mol) of K2CO3 was added, followed by 9.5 g (0.030 mol) of 1-(diphenylmethyl)-3-methane sulfonyl azetidine. The reaction was heated at 80° C. for 5 h. Water was added and the product was extracted with ether. The organic phase was dried and the solvent was removed under vacuo. The residue was filtered through silica gel, starting with 100% methylene chloride, then 25% ethyl acetate/hexane to give 1.5 g of the desired product: mp 75-77° C. 1H NMR (300 MHz, CDCl3) δ 2.89 (dd, 2H), 3.70 (dd, 2H), 3.84 (s, 3H), 4.13 (m, 1H), 4.40 (m, 1H), 4.38 (s,1H), 6.42 (dd,1H), 6.69 (dd, 1H), 6.79 (m, 2H), 7.20 (m, 2H), 7.26 (m, 4H), 7.42 (m, 4H); MS (ES) m/z (relative intensity): 345 (M++H).

1. extractionthe product was extracted with ether
2. customThe organic phase was dried
3. customthe solvent was removed under vacuo
4. filtrationThe residue was filtered through silica gel