Reacción #2063061

Ecuación de reacción

1-(3,4-dichlorophenyl)piperazine

2-propenenitrile

→

4-(3,4-dichlorophenyl)-1-piperazinepropanenitrile

Rendimiento 98.5%

Disolventes

2-propanol

Condiciones de reacción

Tratamiento posterior

1. 1
   Temperaturarefluxed for one hour
2. 2
   OtroThe solvent was evaporated
3. 3
   Otrothe residue was purified by column chromatography over silica gel (eluent: CH2Cl2/CH3OH 95/5)
4. 4
   OtroThe pure fractions were collected
5. 5
   Otrothe solvent was evaporated
6. 6
   workup.STIRRINGThe residue was stirred in diisopropylether/acetonitrile 10/1
7. 7
   OtroThe solvent was evaporated

Procedimiento

A mixture of 1-(3,4-dichlorophenyl)piperazine (0.1 mol), 2-propenenitrile (0.15 mol), and N-methyl-N,N-dioctyl octanaminiumchloride (1 ml) in 2-propanol (150 ml) was stirred and refluxed for one hour. The solvent was evaporated and the residue was purified by column chromatography over silica gel (eluent: CH2Cl2/CH3OH 95/5). The pure fractions were collected and the solvent was evaporated. The residue was stirred in diisopropylether/acetonitrile 10/1. The solvent was evaporated, yielding 28 g (98.5%) of 4-(3,4-dichlorophenyl)-1-piperazinepropanenitrile (intern. 3).

Fuente