作者:Herbert Meier、Angelina Hormaza
DOI:10.1002/ejoc.200300221
日期:2003.9
bifunctional nucleophile methylhydrazine reacts in an alkaline medium in a regioselective mode with chalcones to yield 2-pyrazolines, which can be oxidized by DDQ to the corresponding 1H-pyrazoles. From oligo(chalcone)s this reaction yields cross-conjugated compounds with an alternating sequence of 1,4-disubstituted benzene rings and 3,5-disubstituted 1H-pyrazole rings. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451
双功能亲核试剂甲基肼在碱性介质中以区域选择性模式与查耳酮反应生成 2-吡唑啉,可通过 DDQ 将其氧化为相应的 1H-吡唑。从低聚(查耳酮)中,该反应产生具有 1,4-二取代苯环和 3,5-二取代 1H-吡唑环交替序列的交叉共轭化合物。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)