Réaction #1519080

Équation de réaction

(2,6-dimethyl-4H-pyran-4-ylidene)malononitril

4,7,10-trioxa-1,13-tridecanediamine

→

2-{1-[3-(2-{2-[3-(4-dicyanomethylene-2,6-dimethyl-4H-pyridin-1-yl)-propoxy]-ethoxy}-ethoxy)-propyl]-2,6-dimethyl-1H-pyridin-4-ylidene}-malononitrile

Conditions de réaction

Traitement

1. 1
   AutreRemoval of the acetonitrile
2. 2
   workup.WAITleft a brown residue which
3. 3
   Autrewas recrystallized from 25 ml methanol and 10 ml ethyl acetate yielding 0.68 g (43%) of 2-{1-[3-(2-{2-[3-(4-dicyanomethylene-2,6-dimethyl-4H-pyridin-1-yl)-propoxy]-ethoxy}-ethoxy)-propyl]-2,6-dimethyl-1H-pyridin-4-ylidene}-malononitrile

Mode opératoire

A solution of 0.52 g (3 mmol) of (2,6-dimethyl-4H-pyran-4-ylidene)malononitril and 0.3 ml (1.5 mmol) of 4,7,10-trioxa-1,13-tridecanediamine in 6 ml of acetontrile was heated to 90° C. for 70 h under nitrogen. Removal of the acetonitrile left a brown residue which was recrystallized from 25 ml methanol and 10 ml ethyl acetate yielding 0.68 g (43%) of 2-{1-[3-(2-{2-[3-(4-dicyanomethylene-2,6-dimethyl-4H-pyridin-1-yl)-propoxy]-ethoxy}-ethoxy)-propyl]-2,6-dimethyl-1H-pyridin-4-ylidene}-malononitrile.

Source