Carbon Disulfide → 2-[1,2,5-Trimethyl-2,5-diaza-7,9-dithiabicyclo(4.3.0)-nonane-8-ylidene]-5,5-dimethyl-1,3-cyclohexanedione

Participants

Reaction Steps

To this solution was added dropwise with ice-cooling 1.94 g (0.022 mole) of N,N'-dimethylethylenediamine and the mixture was stirred for 1 hour. Then to this solution was added with ice-cooling the dithiolate solution prepared in the manner shown below; To a mixture of 2.8 g (0.02 mole) of dimedone and 1.6 g (0.02 mole) of carbon disulfide in 15 ml of dimethylsulfoxide was added 2.7 g (0.044 mole) of powdered potassium hydroxide, and the mixture was stirred for one hour.

Provenance & Evidence