反应详情

温度

210 °C

140 g (4.2 mol) of sodium phenolate in 500 ml of N-methylpyrrolidone were heated to 200° C. 116 g (0.6 mol) of 1-(2,2-dichlorovinyl)-1-ethyl-cyclopentane were added dropwise so slowly that the reaction temperature did not fall below 195° C. The mixture was then stirred for a further hour at 210° C. After the mixture had cooled, it was diluted with methylene chloride and extracted several times by shaking with 2 N sodium hydroxide solution. The organic phase, which had been dried over sodium sulphate, was concentrated in vacuo, and the residue was fractionated. 132 g (88% of theory) of 1-chloro-2-(1-ethylcyclopentyl)-2-phenoxyethylene of boiling point 115° to 125° C./0.1 mm Hg were obtained.

1. customdid not fall below 195° C
2. temperatureAfter the mixture had cooled
3. extractionextracted several times
4. stirringby shaking with 2 N sodium hydroxide solution
5. dry with materialThe organic phase, which had been dried over sodium sulphate
6. concentrationwas concentrated in vacuo