Résumé A simple, mild and efficient method is developed for the synthesis of 5-substituted 1H-tetrazoles. Out of three used Pb(II) catalysts, lead chloride (PbCl2) has been found to be an efficient catalyst for [3+2] cycloaddition of NaN3 with aromatic and aliphatic nitriles to afford 5-substituted 1H-tetrazoles. The catalyst is reusable up to four cycles with consistent activity. The cost effectiveness and easy availability of the catalyst, simple methodology, excellent yield and easy work-up are the additional advantages. Supplementary Materials: Supplementary material for this article is supplied as a separate file: mmc1.docx
摘要 本研究开发了一种简单、温和、高效的方法来合成 5-取代的 1H
四唑。在所使用的三种
铅(II)催化剂中,
氯化铅(PbCl2)是一种高效催化剂,可用于 NaN3 与芳香族和脂肪族腈进行 [3+2] 环加成反应,生成 5-取代的 1H-
四唑。该催化剂可重复使用四次,且活性稳定。该催化剂还具有成本低、易获得、方法简单、产率高和易于加工等优点。 补充材料: 本文的补充材料以单独文件形式提供:mmc1.docx