反应详情

In an autoclave, 280 g of isobutylene are added under pressure to 122 g (0.5 mole) of 2,4,4,4-tetrachlorobutyryl chloride in 600 ml of cyclohexane. A solution of 51 g (0.5 mole) of triethylamine in 500 ml of cyclohexane is then pumped in at 65° C. The reaction mixture is then kept for 3 hours at 65° C. The precipitated hydrochloride of triethylamine is collected by filtration and the filtrate is concentrated. The resulting crystals are collected by filtration, affording 79.4 g of 2-chloro-2-(2',2',2'-trichloroethyl)-3,3-dimethylcyclobutan-1-one with a melting point of 75°-76° C. (60% of theory).

1. customis then pumped in at 65° C
2. filtrationThe precipitated hydrochloride of triethylamine is collected by filtration
3. concentrationthe filtrate is concentrated
4. filtrationThe resulting crystals are collected by filtration