A new method for the synthesis of novel 3-substituted 4-amino-8-ethoxycarbonylpyrazolo[5,1-c][1,2,4]triazines and pyrazolo[1′,5′:3,4][1,2,4]triazino[5,6-b][1,5]benzodiazepines |
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Authors: | Yoshihisa Kurasawa Yoshihisa Okamoto Atsushi Takada |
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Abstract: | Novel 3-substituted 4-amino-8-ethoxycarbonylpyrazolo5,1-c]1,2,4]triazines 7,8 were synthesized by the reactions of malononitrile and ethyl cyanoacetate with the pyrazole-5-diazonium salt 3 . Moreover, compounds 7,8 were converted into the pyrazolo1′,5′:3,4]1,2,4]triazino5,6-b]1,5]benzodiazepines 9, 10 . |
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