反应详情

A stirred solution of 3-cyclopentyloxy-4-methoxyaniline (1 g) and triethylamine (0.69 mL) in dry dichloromethane (20 mL) at 0° C. is treated dropwise with 2,6-dichlorobenzoyl chloride (1.17 g). After stirring at this temperature for 30 minutes, the mixture is warmed to room temperature and stirred for a further 3 hours. The organic layer is washed with water (100 mL), dried and concentrated. The residue is recrystallized from a mixture of isopropanol and hexane, to give N-(3-cyclopentyloxy-4-methoxyphenyl)-2,6-dichlorobenzamide (0.6 g), m.p. 184-185° C. [Elemental analysis: C,60.2,H,5.0; N,3.6; Cl,18.9%; calculated: C,60.0; H,5.0; N,3.7; Cl,18.65%].

1. stirringstirred for a further 3 hours
2. washThe organic layer is washed with water (100 mL)
3. customdried
4. concentrationconcentrated
5. customThe residue is recrystallized from a mixture of isopropanol and hexane