反应详情

A mixture of [1-methyl-3-(2,6,6-trimethyl-2-cyclohexenyl)-2(trans)-propenyl]dimethylamine (2.3 g) and ethylbromide (6.0 g) was refluxed for 3 hours, and then the excess ethylbromide was distilled off. The residue was recrystallized from a mixed solvent of benzene and ether to give colorless crystals (0.9 g) of [1-methyl-3-(2,6,6-trimethyl-2-cyclohexenyl)-2(trans)-propenyl]dimethylethylammonium bromide.

1. temperaturewas refluxed for 3 hours
2. distillationthe excess ethylbromide was distilled off
3. customThe residue was recrystallized from a mixed solvent of benzene and ether