4-Methylmorpholine → N-(2-Aminoethyl)-3-methylbutanamide

Isovaleroyl chloride (5 g, 38 mmole) in dichloromethane was added dropwise to a stirred solution of N,N-dimethylethylene diamine (3,38 g, 38 mmole) and NMM (7.75 g, 76.7 mmoles) in CH2Cl2 at 0° C. The reaction mixture was stirred at room temperature for four hours when the solvent was evaporated. The residue was taken up in 5 M NaOH (50 ml) and extracted with ethyl acetate (2×100 ml). The ethyl acetate was washed with a saturated aqueous solution of sodium chloride, dried (Na2SO4) and evaporated. The residue was dissolved in diethyl ether and 5 M HCl in ethyl acetate (10 ml) added. The resulting solid was filtered, washed with diethyl ether (5+10 ml) and dried under high vacuum.

1. customwas evaporated
2. extractionextracted with ethyl acetate (2×100 ml)
3. washThe ethyl acetate was washed with a saturated aqueous solution of sodium chloride
4. dry with materialdried (Na2SO4)
5. customevaporated
6. dissolutionThe residue was dissolved in diethyl ether
7. addition5 M HCl in ethyl acetate (10 ml) added
8. filtrationThe resulting solid was filtered
9. washwashed with diethyl ether (5+10 ml)
10. customdried under high vacuum

ORD record

ord-d5cb9f8c97f840db88d6e4de0db53f78

Source dataset

uspto-grants-1979_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US04178371