反应详情

A solution of 10.0 g. (0.026 mol.) of 1,3-bis(2-cyano-5-trifluoromethylphenyl)triazene, 6.0 g. (0.029 mol.) of N,N-dicyclohexylcarbodiimide and 5.1 g. (0.026 mol.) of 4-diethylaminobutyric acid hydrochloride in 800 ml. of methylene chloride is stirred at 25° for 12 hours. The reaction mixture is filtered and the filtrate is concentrated under reduced pressure to give a residue which is washed with ether and recrystallized from benzene to give 3-[4-(N,N-diethylamino)butyryl]-1,3-bis(2-cyano-5-trifluoromethylphenyl)-triazene hydrochloride.

1. filtrationThe reaction mixture is filtered
2. concentrationthe filtrate is concentrated under reduced pressure
3. customto give a residue which
4. washis washed with ether
5. customrecrystallized from benzene