Epichlorohydrin → N-Butyl-N-[(oxiran-2-yl)methyl]butan-1-amine

A stirred solution of epichlorohydrin (20.0 g, 0.22 mole) is treated dropwise with di-n-butylamine (29.73 g, 0.23 mole) over a 1 hour period followed by continued stirring at room temperature overnight. The reaction mixture is washed with 20% K2CO3 (50 ml). The organic layer is then stirred with 40% NaOH for 1 hour and then extracted with 3×100 ml portions of ether. The etheral extracts are pooled and washed with H2O (100 ml). The organic layer is dried over anhydrous Na2SO4 and filtered. The filtrate is concentrated under reduced pressure to leave the crude product (I) weighing 39.42 g. The crude product is distilled at 52°/0.15 mmHg to give 8.24 g (20.2%) pure product to be used as an intermediate in Part B.

1. washThe reaction mixture is washed with 20% K2CO3 (50 ml)
2. stirringThe organic layer is then stirred with 40% NaOH for 1 hour
3. extractionextracted with 3×100 ml portions of ether
4. washwashed with H2O (100 ml)
5. dry with materialThe organic layer is dried over anhydrous Na2SO4
6. filtrationfiltered
7. concentrationThe filtrate is concentrated under reduced pressure
8. customto leave the crude product (I)
9. distillationThe crude product is distilled at 52°/0.15 mmHg

ORD record

ord-0c9cc6dfee794036b6db7416bb43a02b

Source dataset

uspto-grants-1999_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05922703