Toluene → HCID 86640808, compound

To a chilled (ice bath) solution of 6-bromo-pyridine-3-carbaldehyde (15.0 g, 80.64 mmol) in a 1:1 mixture of ether:toluene (400 mL) was added a 2 M solution of ethylmagnesium chloride (40.0 mL, 80.0 mmol) in THF over a 15 minute period. The reaction was monitored by TLC (ethyl acetate-hexanes 3:7). After 4 hours, the mixture was diluted with saturated aqueous ammonium chloride (300 mL) and the organic phase separated. The aqueous layer was extracted with ethyl acetate (2×100 mL). The combined organic layers were washed with brine (2×50 mL), dried over magnesium sulfate, filtered and concentrated. The crude material was passed through a pad of silica gel eluting with dichloromethane-hexanes (0-100%). The material from the pad was purified by silica gel chromatography eluting with ethyl acetate-hexanes (2:98, then 4:96, then 6:94, then 8:92, then 1:9, then 12:88, then 15:85) to afford 1-(6-bromo-pyridin-3-yl)-propan-1-ol as a clear oil.

1. customthe organic phase separated
2. extractionThe aqueous layer was extracted with ethyl acetate (2×100 mL)
3. washThe combined organic layers were washed with brine (2×50 mL)
4. dry with materialdried over magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. customThe material from the pad was purified by silica gel chromatography
8. washeluting with ethyl acetate-hexanes (2:98

ORD record

ord-d717ad185b234920b2717089c489478d

Source dataset

uspto-grants-2011_11

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US08063065B2