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SYNTHESIS OF 4-ARYL(HETARYL)PYRAZOLO[1,5-a]PYRAZINES BY PALLADIUM-CATALYZED SUZUKI–MIYAURA CROSS COUPLING

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


4-Bromopyrazolo[1,5-a]pyrazines react with aryl(hetaryl)boronic acids in the presence of catalytic amounts of Pd(dppf)Cl2·CH2Cl2 and an excess of Cs2CO3 in the MeCN–H2O, 9:1 solvent system with the formation of 4-aryl(hetaryl)pyrazolo[1,5-a]pyrazines.

Keywords


arylboronic acids; 4-aryl(hetaryl)pyrazolo[1,5-a]pyrazines; 4-bromopyrazolo[1,5-a]pyrazines; palladium catalysis; Suzuki– Miyaura reaction.

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