Reaktion #1849992

Reaktionsgleichung

diisopropyl malonate

potassium hydroxide

glyoxal-sodium bisulfite

ethylenediamine

dithiolate

→

Diisopropyl(2,5-diaza-7,9-dithiabicyclo-[4,3,0]-nonane-8-ylidene)malonate

Lösungsmittel

carbon disulfide

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooling
2. 2
   workup.ADDITIONTo this solution was added dropwise with ice-

Vorschrift

To a suspension of 2.5 g of glyoxal-sodium bisulfite in 10 ml of water was added dropwise 0.5 g of ethylenediamine with ice-cooling and the mixture was stired for additional 1 hour. To this solution was added dropwise with ice-cooling the dithiolate aqueous solution which had been prepared previously by the reaction of 1.5 g of diisopropyl malonate with 0.8 g of carbon disulfide in the presence of 3.3 g of 30% aqueous potassium hydroxide.

Quelle