反应详情

16 g (0.044 mole) of 2-bromomethyl-5-[1-(4-chlorophenoxy)-2-methyl-prop-2-yl]-5-methyl-tetrahydrofuran are stirred together with 11 g (0.097 mole) of cis-3,5-dimethylpiperidine at a bath temperature of 140° C. for about 14 hours. The resulting reaction mixture is taken up in ether, washed several times with water, dried over sodium sulphate and concentrated in vacuo. The oily residue is purified by column chromatography (silica gel 60/ether-petroleum ether 1:1). 7.8 g (45% of theory) of 5-[1-(4-chlorophenoxy)-2-methyl-prop-2-yl-]-2-(cis)(3,5-dimethylpiperidin-1-ylmethyl)-5-methyl-tetrahydrofuran of refractive index nD20 =1.5049 are obtained.

1. customThe resulting reaction mixture
2. washwashed several times with water
3. dry with materialdried over sodium sulphate
4. concentrationconcentrated in vacuo
5. customThe oily residue is purified by column chromatography (silica gel 60/ether-petroleum ether 1:1)