反应详情

A mixture of 1-nitro-2-methylthio-2-{2-[(4-methyl-1H-imidazol-5-yl)methylthio]ethylamino}ethylene prepared according to Belgian Pat. No. 814,941 (4.0 g, 0.014 mole) and distilled propargylamine (7.74 g, 0.14 mole) in acetonitrile (60 ml) was stirred at reflux temperature under a positive pressure of nitrogen for 18 hours. The reaction mixture was cooled, evaporated to dryness and then triturated under 20 ml of isopropyl alcohol to give the title compound (3.58 g, 87%). Column chromatography on silica gel by gradient elution using methylene chloride-methanol gave a pure sample; mp 159°-160° dec.

1. customprepared
2. temperatureat reflux temperature under a positive pressure of nitrogen for 18 hours
3. temperatureThe reaction mixture was cooled
4. customevaporated to dryness
5. customtriturated under 20 ml of isopropyl alcohol