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SYNTHESIS OF PYRAZOLO[1,5-a]PYRAZIN-4-YLACETONITRILES AND THEIR ANNULATION WITH PYRIDINE RING

Назар М. Цизорик, Евгений В. Гринишин, Анна Р. Мусийчук, Андрей В. Больбут, Михаил В. Вовк
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Abstract


A reaction of 4-chloropyrazolo[1,5-a]pyrazines with tert-butyl cyanoacetate proceeded via the formation of tert-butyl cyano(pyrazolo[1,5-a]pyrazin-4(5H)-ylidene)ethanoates as intermediates and led to pyrazolo[1,5-a]pyrazin-4-ylacetonitriles, which were used to obtain derivatives of a new pyrazolo[1,5-a]pyrido[2,1-c]pyrazine system.

Keywords


4-chloropyrazolo[1,5-a]pyrazines; pyrazolo[1,5-a]pyrazin-4-ylacetonitriles; pyrazolo[1,5-a]pyrido[2,1-c]pyrazines; annulation.

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