Potassium Cyanide → 209796-27-0

3-Bromo-2-(bromomethyl)thiophene (7.1 g) and potassium cyanide (2.7 g) were dissolved in ethanol (93 mL) and water (17 mL), and the mixture was stirred at 50° C. for 2 hours. The reaction solution was concentrated under reduced pressure, and to the residue was added water. The resulting mixture was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=100/0−80/20) to give the title compound (4.0 g).

1. concentrationThe reaction solution was concentrated under reduced pressure
2. additionto the residue was added water
3. extractionThe resulting mixture was extracted with ethyl acetate
4. washThe organic layer was washed with brine
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. customThe obtained residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate=100/0−80/20)

ORD record

ord-19d445681f4d4d2fb3aba1665c7d96b0

Source dataset

uspto-grants-2015_08

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09115144B2