反应详情

By the cyclisation procedure described for the preparation of 2-(4-chlorophenyl)-2-bromomethyl-5-prop-1-yltetrahydrofuran (see Example 1), 2-(4-chlorophenyl)-5-hydroxy-5-methylhex-1-ene (5.3 g), bromine (3.8 g), and pyridine (1.9 g), in dichloromethane (60 ml), gave 2-(4-chlorophenyl)-2-bromomethyl-5,5-dimethyltetrahydrofuran (7.6 g) as a red oil, 1H nmr (CDCl3): δ1.2 (3H, singlet) and 1.4 (3H, singlet), 2×CH3, 3.5 (2H, singlet, CH2Br).