Reacción #651850

Ecuación de reacción

phenyl hydrazine

chalcone

→

chalcone hydrazone

Rendimiento 125.2%

Disolventes

ethanol

Condiciones de reacción

Tratamiento posterior

1. 1
   Otroprepared
2. 2
   OtroTo a 500 ml round bottom flask, fitted with a magnetic stirrer
3. 3
   TemperaturaThe reaction mixture refluxed overnight
4. 4
   OtroA white precipitate formed
5. 5
   Filtraciónwas filtered
6. 6
   Otroto yield a white solid which
7. 7
   Lavadowas washed with cold ether

Procedimiento

Another colorant stabilizer of the present invention is a basic fuschin hydrazone, prepared as follows. To a 500 ml round bottom flask, fitted with a magnetic stirrer and a heating mantle, was placed 50 g (0.46 mole) phenyl hydrazine (Aldrich), 96.3 g (0.46 mole) chalcone (Aldrich), and 300 ml. of anhydrous ethanol. The reaction mixture refluxed overnight and then cooled to room temperature. A white precipitate formed and was filtered to yield a white solid which was washed with cold ether. 128 g (93%) chalcone hydrazone was obtained. This reaction is shown below.

Fuente