1-Acylamino-1-azadienes as an alternative to 1-dimethylamino-1-azadienes in the preparation of 1,8-diazaanthracene-2,9,10-triones.
摘要:
Acetylhydrazones of alpha,beta-saturated aldehydes behave as 1-azadienes in their reaction with 2,5,8(1H)-quinolinetriones, affording 1,8-diazaanthracene-2,9,10-triones, while die corresponding N-methyl derivatives are unreactive. In comparison with N,N-dimethylhydrazones, acetylhydrazones are less reactive bur me yields obtained are similar or higher because of the suppression of side products formed by addition of dimethylamine to the starting quinone.
1-Acylamino-1-azadienes as an alternative to 1-dimethylamino-1-azadienes in the preparation of 1,8-diazaanthracene-2,9,10-triones.
摘要:
Acetylhydrazones of alpha,beta-saturated aldehydes behave as 1-azadienes in their reaction with 2,5,8(1H)-quinolinetriones, affording 1,8-diazaanthracene-2,9,10-triones, while die corresponding N-methyl derivatives are unreactive. In comparison with N,N-dimethylhydrazones, acetylhydrazones are less reactive bur me yields obtained are similar or higher because of the suppression of side products formed by addition of dimethylamine to the starting quinone.