Carbon Disulfide → 2-[2,5-Dimethyl-2,5-diaza-7,9-dithiabicyclo-(4.3.0)-nonane-8-ylidene]-5-(2-thienyl)-1,3-cyclo hexanedione

Participants

Reaction Steps

To a suspension of 2.84 g (0.01 mole) of glyoxal-sodium bisulfite in 20 ml of water was added dropwise at room temperature 1.05 g (0.01 mole) of N,N'-dimethylethylenediamine and the mixture was stirred until it became a homogeneous solution. Then to this solution was added with ice-cooling the dithiolate solution prepared in the manner mentioned below; To a solution of 1.94 g (0.01 mole) of 5-thienyl-1,3-cyclohexanedione and 0.8 g (0.01 mole) of carbon disulfide in 10 ml of dimethylformamide was added with ice-cooling 1.4 g (0.025 mole) of powdered potassium hydroxide, and the mixture was stirred for one hour.

Provenance & Evidence