2,5-Dibromopyridine → HCID 104808611, compound

Temperature

85 °C

A solution of 2,5-dibromopyridine (100 mg, 0.422 mmol) in tetrahydrofuran (844 μL) was purged and flushed with Ar (g) (3×). Pd(PPh3)4 (48.8 mg, 0.042 mmol) was added to the reaction mixture and purged and flushed (3×) with Ar(g). Bromo(2-cyanoethyl)zinc (1270 μL, 0.633 mmol) was added dropwise to the reaction mixture and heated to 85° C. Upon the reaction completion (as deemed by LCMS analysis) was cooled to room temperature, filtered through CELITE, washed with dichloromethane and diluted with water. The organic layer was extracted, dried over sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel chromatography (acetone/exanes) to yield 3-(5-bromopyridin-2-yl)propanenitrile. MS APCI calc'd for C8H8BrN2 [M+H]+ 211 and 213. found 211 and 213.

1. customflushed with Ar (g) (3×)
2. custompurged
3. customflushed (3×) with Ar(g)
4. temperatureUpon the reaction completion (as deemed by LCMS analysis) was cooled to room temperature
5. filtrationfiltered through CELITE
6. washwashed with dichloromethane
7. additiondiluted with water
8. extractionThe organic layer was extracted
9. dry with materialdried over sodium sulfate
10. concentrationconcentrated under reduced pressure
11. customThe residue was purified by silica gel chromatography (acetone/exanes)

ORD record

ord-e840128cf6994f4b8a88f251652f15e7

Source dataset

uspto-grants-2016_06

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09376418B2