反应详情

To 30 ml of tetrahydrofuran, 0.8 g of N-methyl-(2-cyanoethyl)amine was dissolved, and 2.0 g of 2-methylthio-1,3-dithiolium iodide was gradually added thereto under stirring at room temperature. The mixture was stirred at room temperature for 1 hour, and then the precipitated crystals were collected by filtration and recrystallized from acetone-ethyl ether, whereby 1.8 g (yield: 80%) of 1-(1,3-dithiol-2-ylidene)-N-methyl-N-(2-cyanoethyl)ammonium iodide (Compound No. 4) was obtained as crystals having a melting point of 203° C.

1. stirringThe mixture was stirred at room temperature for 1 hour
2. filtrationthe precipitated crystals were collected by filtration
3. customrecrystallized from acetone-ethyl ether