【摘要】 在多聚磷酸(PPA)存在下,2,6-二烷氧基(羟基)苯乙酮的苄腙和甲腙可以发生环化反应,生成产率较高的吲唑类化合物。根据实验结果,我们推测反应的关键步骤为亲核进攻。化合物的结构均经元素分析、IR、~1HNMR和MS确定。更多还原

【Abstract】 In the presence of PPA ,2.6- dialkoxyl ( hydroxyl) acetophenone hydrazones were cyclized to give indazoles. According to the experimental results, it was assumed that the cyclization was taken by nucleophilic attack. All the new compound were identified by elemental and spectral analyses.更多还原