Journal of heterocyclic chemistry

Chemical and electrochemical reduction of some pyrazolo [1, 5??a] pyrimidines

C Bellec, GÉR Lhommet

文献索引：Bellec, Christian; Lhommet, Gerard Journal of Heterocyclic Chemistry, 1995 , vol. 32, # 6 p. 1793 - 1800

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被引用次数: 15

摘要

Abstract Various pyrazolo [1, 5-a] pyrimidines 1 are prepared by two different ways. Their chemical reduction by sodium borohydride leads generally to 4, 5, 6, 7-tetrahydro compounds 3, while lithium aluminum hydride yields 4, 7-dihydro derivatives 2 at room temperature, and 3 in refluxing tetrahydrofuran. A complex mixture of oxidizable hydrodimers is obtained by electrochemical reduction. An electroreduction at a more ...