Methyl iodide → HCID 69352940, compound

Temperature

0 °C

In THF (500 ml) was dissolved 4-[(benzyloxy)carbonyl]-aminobutyric acid (25.0 g), and to the mixture was gradually added at −5° C. methyl iodide (37.4 g). Under nitrogen atmosphere, the mixture was stirred at 0° C. for 15 minutes and then at room temperature for 24 hours. To the mixture was added ethyl acetate (300 ml) and then water (800 ml). The mixture was made pH 11 with sodium hydroxide and washed with ether (400 ml×2). The aqueous layer was made pH 2 with concentrated hydrochloric acid and extracted with ethyl acetate(1000 ml and 500 ml×3). The organic layer was washed with 1M sodium thiosulfate solution (300 ml) and dried with magnesium sulfate. The solvent was evaporated under reduced pressure to give 4-[(benzyloxy)carbonyl]-4-methyl-aminobutyric acid (26.3 g).

1. waitat room temperature for 24 hours
2. washwashed with ether (400 ml×2)
3. extractionextracted with ethyl acetate(1000 ml and 500 ml×3)
4. washThe organic layer was washed with 1M sodium thiosulfate solution (300 ml)
5. dry with materialdried with magnesium sulfate
6. customThe solvent was evaporated under reduced pressure

ORD record

ord-10eb8eedb33e4241bd67eb7c12dfe9c4

Source dataset

uspto-grants-2001_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06268354B1