Water → Pyridine 2-aldoxime

To a solution of pyridine-2-carboxaldehyde (5.5 mL; 57.8 mmol) in ethanol (100 mL) at 0° C., was added water (22 mL) and hydroxylamine hydrochloride (5.32 g; 76.6 mmol). Aqueous sodium hydroxide (1N; 50 mL) was added dropwise and the reaction mixture warmed to room temperature overnight. The reaction mixture was poured into water (250 mL) and extracted with ethyl acetate (3×150 mL). The combined organic layers were washed with water (100 mL), dried (MgSO4), filtered and evaporated to yield oxime 1e as a white solid.

1. extractionextracted with ethyl acetate (3×150 mL)
2. washThe combined organic layers were washed with water (100 mL)
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. customevaporated

ORD record

ord-5ca5df5f73694851b03fd33abc9e7d5c

Source dataset

uspto-grants-2011_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07902227B2