反应详情

温度

0 °C

A solution of 0.3 g of N,N'-dicyclohexyl-carbodiimide in 6 ml of dichloromethane is added dropwise at 0° C. within 15 minutes to a solution of 0.201 g of 4-(5-octyl-pyrimidin-2-yl)-benzoic acid, 0.116 g of cyclopentane-hexanol and 0.02 g of 4-dimethylaminopyridine in 10 ml of dichloromethane. The suspension is stirred at 0° C. for a further 1 hour, filtered and concentrated. The residue is chromatographed on 10 g of silica gel with hexane/ethyl acetate 19:1 (v/v). Recrystallization of the product-containing fractions from ethanol gives pure 6-cyclopentyl-hexyl 4-(5-octyl-pyrimidin-2-yl)-benzoate.

1. filtrationfiltered
2. concentrationconcentrated
3. customThe residue is chromatographed on 10 g of silica gel with hexane/ethyl acetate 19:1 (v/v)
4. customRecrystallization of the product-containing fractions from ethanol