2-Mercaptoethanol → 1,2,3-Tris(2-hydroxyethylthio)propane

To 300 parts of ethanol were successively added 6.9 parts of metallic sodium, 23.4 parts of 2-mercaptoethanol and 14.7 parts of 1,2,3-trichloropropane in this order, and the resulting mixture was heated under reflux. Thereafter, the deposited sodium chloride was removed, and the solution was concentrated to obtain 1,2,3-tris(2-hydroxyethylthio)propane. This compound was added to 80 parts of chloroform, and 45 parts of thionyl chloride was dropped into the resulting mixture. Subsequently, the mixture was heated under reflux, and then the solvent chloroform and unreacted thionyl chloride were removed by distillation under reduced pressure. The residual oily substance was poured into ice water and extracted with ether, and the ether extract was dehydrated over anhydrous sodium sulfate and then freed from the solvent by distillation to obtain 1,2,3-tris(2-chloroethylthio)propane. To this compound were successively added 0.3 part of phosphoric acid and 60 parts of 30% aqueous hydrogen peroxide, and the resulting mixture was heated under reflux and then cooled to deposit 1,2,3-tris(2-chloroethylsulfonyl)propane. The deposited compound was recovered by filtration and dissolved in 100 parts of dimethyl sulfoxide, and the resulting solution was incorporated with 30 parts of triethylamine and then stirred at room temperature to deposit triethylamine hydrochloride. This hydrochloride was removed, and then the dimethyl sulfoxide was removed by distillation to deposit solids. The deposited solids were recrystallized from ethanol to obtain 1,2,3-tris(vinylsulfonyl)propane.

1. temperaturethe resulting mixture was heated
2. temperatureunder reflux
3. customThereafter, the deposited sodium chloride was removed
4. concentrationthe solution was concentrated

ORD 기록

ord-491bad0a415749a8874c6cb5d72dfd6b

출처 데이터셋

uspto-grants-1978_05

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US04088495