Imidazole → 1-t-BUTYLDIMETHYLSILYLOXY-2,3-DIMERCAPTOPROPANE

Temperature

0 °C

To a solution of 2,3-dimercapto-1-propanol (15.0 ml, 150 mmol) and imidazole (15.3 g, 224 mmol, 1.5 eq) in THF (300 mL) was added t-butyldimethylsilyl chloride (21.4 g, 142 mmol, 0.95 eq) at 0° C. The mixture was stirred at 0° C. for 1 hr and at room temperature for 18 hr. A saturated solution of ammonium chloride was added and the aqueous phase was extracted with dichloromethane. The organic layer was dried with anhydrous sodium sulphate and the solvent was evaporated under reduced pressure. The crude material was purified by flash chromatography with a mixture of hexane and ethyl acetate (90:10) to give the pure compound (32.04 g) in 94.5% yield.

1. extractionthe aqueous phase was extracted with dichloromethane
2. dry with materialThe organic layer was dried with anhydrous sodium sulphate
3. customthe solvent was evaporated under reduced pressure
4. customThe crude material was purified by flash chromatography with a mixture of hexane and ethyl acetate (90:10)

ORD record

ord-3d95563d7f794485bd6c0790606e1b60

Source dataset

uspto-grants-2000_10

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06127540