反应详情

To 53 parts of 3-methoxy-1,2,-propanediol and 75 parts of (2,4-dichlorophenyl)ethanone, dissolved in 170 parts of methylbenzene are added 2 parts of 4-methylbenzene sulfonic acid and the whole is refluxed for 8 hours using a water-separator. The thus obtained methylbenzene solution is washed with water, dried and evaporated in vacuo. The residue is distilled in vacuo, yielding 100 parts of 2-(2,4-dichlorophenyl)-2-methyl-4-(methoxymethyl)-1,3-dioxolane; bp. 111°-115° C. at 4 mm. pressure.

1. temperaturethe whole is refluxed for 8 hours
2. washThe thus obtained methylbenzene solution is washed with water
3. customdried
4. customevaporated in vacuo
5. distillationThe residue is distilled in vacuo