A convenient and efficient route for the chemoselective synthesis of carbohydrazide, arenesulfonylhydrazide, and thiosemicarbazone derivatives of 5H-pyrrolo[3,4-b]pyrazine and 1H-pyrrolo[3,4-b]quinoxaline from the corresponding dinitriles and substituted hydrazines was elaborated. The synthesis of starting pyrazine-2,3-dicarbonitrile was sufficiently improved by using concentrated HCl as a catalyst.
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Indian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, IndiaIndian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, India
Nagarapua, Lingaiah
Gaikwad, Hanmant K.
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Indian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, IndiaIndian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, India
Gaikwad, Hanmant K.
Manikonda, Sheeba Rani
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Indian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, IndiaIndian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, India
Manikonda, Sheeba Rani
Bantu, Rajashaker
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Indian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, IndiaIndian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, India
Bantu, Rajashaker
Manda, Krishna Madhuri
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Indian Inst Chem Technol CSIR, Ctr Chem Biol, Hyderabad 500607, Andhra Pradesh, IndiaIndian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, India
Manda, Krishna Madhuri
Kalivendi, Shasi Vardhan
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Indian Inst Chem Technol CSIR, Ctr Chem Biol, Hyderabad 500607, Andhra Pradesh, IndiaIndian Inst Chem Technol CSIR, Organ Chem Div 2, Hyderabad 500607, Andhra Pradesh, India