Triethylamine → 2-(Benzylsulfanyl)ethyl 2-bromopropanoate

A solution of 21.6 g of 2-bromopropionyl bromide in 30 ml of toluene was added dropwise to a solution of 10.1 g of triethylamine and 16.8 g of 2-benzylthioethanol in 150 ml of toluene at room temperature whilst stirring. After the addition was completed, the reaction mixture was stirred for a further 2 hours at room temperature. The mixture was then washed successively with 1% strength by weight aqueous solution of sodium hydroxide and water. After drying the organic phase over anhydrous sodium sulphate, the toluene was distilled off under reduced pressure, and the end product of 2-benzylthioethyl 2-bromopropionate was obtained in a yield of 28.8 g as a colorless product. nD20 =1.5570.

1. additionAfter the addition
2. stirringthe reaction mixture was stirred for a further 2 hours at room temperature
3. washThe mixture was then washed successively with 1% strength by weight aqueous solution of sodium hydroxide and water
4. dry with materialAfter drying the organic phase over anhydrous sodium sulphate
5. distillationthe toluene was distilled off under reduced pressure

ORDレコード

ord-b88167dfb4ec4c39ad1b33673fca9657

出典データセット

uspto-grants-1985_02

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US04500346