反应详情

33 g (0.41 mole) of pyridine are slowly added dropwise to a mixture of 109 g (0.41 mole) of the S-enantiomer of tosyloxy-propionic acid chloride, 43.4 g (0.41 mole) of trimethylsilyl-methanol and 250 ml of toluene at 20° C., with stirring. The mixture is subsequently stirred at room temperature for 24 hours. Working up is then carried out by a procedure in which the reaction mixture is poured into water and extracted with toluene and the organic phase is concentrated by stripping off the diluent under reduced pressure. 130 g (96% of theory) of the S-enantiomer of trimethylsilyl-methyl 2-tosyloxy-propionate are obtained in this manner in the form of an oily product.

1. stirringThe mixture is subsequently stirred at room temperature for 24 hours
2. extractionextracted with toluene
3. concentrationthe organic phase is concentrated