反应详情

A solution of 0.38 g. (6.7 mmol.) of methyl isocyanate in 20 ml. of ether is added dropwise to 1.6 g. (4.2 mmol.) of 1,3-bis(2-cyano-5-trifluoromethylphenyl)triazene in 125 ml. of ether. The reaction mixture is stirred at 25° for 12 hours, refluxed for 6 hours, then left to stand at 25° for 48 hours. Removal of the solvent under reduced pressure gives 3-(N-methylcarbamoyl)-1,3-bis(2-cyano-5-trifluoromethylphenyl)triazene, m.p. 170° (dec.).

1. temperaturerefluxed for 6 hours
2. waitleft
3. waitto stand at 25° for 48 hours
4. customRemoval of the solvent under reduced pressure