Facile Synthesis of Hydrazine Derivatives of 5H-Pyrrolo[3,4-b]pyrazine and 1H-Pyrrolo[3,4-b]quinoxaline
作者:Olga Hordiyenko、Igor Rudenko、Irina Zamkova、Oleksandr Denisenko、Angelina Biitseva、Axelle Arrault、Andrei Tolmachev
DOI:10.1055/s-0033-1340042
日期:——
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. A convenient
摘要 从相应的二腈和取代的肼类化合物化学选择性合成5 H-吡咯并[3,4- b ]吡嗪和1 H-吡咯并[3,4- b ]喹喔啉的碳酰肼,芳烃磺酰肼和硫代半脲衍生物的便捷有效途径被详细阐述。通过使用浓HCl作为催化剂,起始吡嗪-2,3-二腈的合成得到了充分改善。 从相应的二腈和取代的肼类化合物化学选择性合成5 H-吡咯并[3,4- b ]吡嗪和1 H-吡咯并[3,4- b ]喹喔啉的碳酰肼,芳烃磺酰肼和硫代半脲衍生物的便捷有效途径被详细阐述。通过使用浓HCl作为催化剂,起始吡嗪-2,3-二腈的合成得到了充分改善。