Reaktion #2171026

Reaktionsgleichung

terephthaldehyde

2-cyanoethylhydrazine

→

beige colored product

3-(N′-{4-[(2-cyanoethyl)hydrazonomethyl]benzyliden}-hydrazino)propionitrile

Lösungsmittel

methanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONare added drop-wise within 20 minutes
2. 2
   SonstigeAfter about 10 minutes further crystallization
3. 3
   Filtrationa precipitate that appears is filtered with suction
4. 4
   WaschenAfter washing with a little cold methanol the precipitate
5. 5
   Sonstigeis dried under vacuum

Vorschrift

To a suspension of 102 g terephthaldehyde in 700 ml methanol 129.4 g of 2-cyanoethylhydrazine are added drop-wise within 20 minutes. The temperature increases to about 50° C., and an orange-red solution generally arises. After about 10 minutes further crystallization occurs. Stirring continues for 30 minutes and a precipitate that appears is filtered with suction. After washing with a little cold methanol the precipitate is dried under vacuum. 187 g of beige colored product are produced.

Quelle