Gamma-Butyrolactone → 1-Butanol, 4-(butylamino)-

Temperatur

70 °C

A solution of 8.1 g (110 mmol) of n-butylamine and 8.6 g of butyrolactone in 50 ml toluene was allowed to reflux under nitrogen atmosphere for 50 hours. Volatile solvents were removed in vacuo. To a solution of 3.18 gm (20 mmol) of the resultant N-butyl-4-hydroxybutyramide in 50 ml of toluene were added 120 ml (120 mmol) DIBAL(25% W). The solution was heated with stirring at 70° C. for 18 hours. After cooling to 0° C., the reaction was quenched with methanol (113 amount of DIBAL solution was used) followed by addition of saturated solution of Rochelle's salt. The mixture was extracted twice with EtOAc; the organic extracts were washed with brine and dried over Na2SO4.

1. temperatureto reflux under nitrogen atmosphere for 50 hours
2. customVolatile solvents were removed in vacuo
3. temperatureThe solution was heated
4. temperatureAfter cooling to 0° C.
5. customthe reaction was quenched with methanol (113 amount of DIBAL solution was used)
6. additionfollowed by addition of saturated solution of Rochelle's salt
7. extractionThe mixture was extracted twice with EtOAc
8. washthe organic extracts were washed with brine
9. dry with materialdried over Na2SO4

ORD-Eintrag

ord-3e72a5221bb44a03bd5def1130cdaef6

Quelldatensatz

uspto-grants-2005_09

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06946481B1