反应详情

温度

25 °C

Triethyl amine (36 mL, 0.263 mol) was added to a solution of (2-bromomethyl-6-chloro-phenoxy)-tert-butyl-dimethyl-silane (72 g, 0.214 mol) [prepared from 6-chloro cresol by protecting the hydroxy group with t-butyldimethylsilane followed by bromination using N-bromosuccinimide] and compound of Example 1f (43 g, 0.164 mol) in chloroform (600 mL) at 5° C. over a period of 20 min. The reaction mixture was stirred at 25° C. for 30 min. The reaction mixture was washed with water (2×200 mL) and brine (100 mL). The solvent was removed under reduced pressure and to the oily mass obtained, methanol (300 mL) was added with stirring. The crystalline solid obtained was filtered, washed with methanol and dried to obtain the title compound. Yield: 70 g, (83%); 1H NMR (CDCl3, 300 MHz): δ 0.28 (s, 6H, 2CH3), 1.03 (s, 9H, 3CH3), 2.45 (s, 3H, CH3), 3.89 (s, 3H, OCH3), 4.19 (s, 2H, CH2), 6.89 (t, 1H, Ar), 7.24 (t, 1H, Ar), 7.32 (d, 1H, Ar), 7.61 (s, 1H, Ar), 7.69 (s, 1H, Ar); MS: m/e (ES−) 515 (M−1).

1. customat 5° C.
2. customof 20 min
3. washThe reaction mixture was washed with water (2×200 mL) and brine (100 mL)
4. customThe solvent was removed under reduced pressure and to the oily mass
5. customobtained
6. stirringwith stirring
7. customThe crystalline solid obtained
8. filtrationwas filtered
9. washwashed with methanol
10. customdried