Ethanol → (4-(Dimethylamino)butyl)(methyl)amine

Temperature

0 °C

A solution of lithium aluminium hydride in THF (1M, 28 mL) was added dropwise to a stirred, cooled solution of N-(4-dimethylaminobutyl)formamide (Intermediate 79, 2.7 g) in THF (60 mL) while maintaining the temperature at 0° C. under an atmosphere of nitrogen. On completion of the addition, the mixture was stirred and heated at 75° C. for 2 hours. The reaction mixture was cooled to 0° C. and ethanol was added then the mixture was evaporated to dryness. The residue was diluted with a mixture of diethyl ether and DCM (30%) and the solid was filtered off. The filtrate was evaporated to dryness to give N-(4-dimethylaminobutyl)-N-methylamine (1.5 g) as a yellow oil.

1. additionOn completion of the addition
2. temperatureheated at 75° C. for 2 hours
3. temperatureThe reaction mixture was cooled to 0° C.
4. customthe mixture was evaporated to dryness
5. additionThe residue was diluted with a mixture of diethyl ether and DCM (30%)
6. filtrationthe solid was filtered off
7. customThe filtrate was evaporated to dryness

ORD record

ord-d304d75af0034ceebe5e417847e863c3

Source dataset

uspto-grants-2016_03

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09290472B2