Silica–Sulfuric Acid Catalyzed Nitrodeiodination of Iodopyrazoles
摘要:
We report here the synthesis of nitropyrazoles in good to excellent yields from iodopyrazoles over silica-sulfuric acid catalyst for the first time. The present procedure require less acid, offers a simplified workup procedure, and may be applied for the nitration of a wide variety of iodoazoles in drug and pharmaceutical industries.
Faujasite catalyzed nitrodeiodination of iodopyrazoles
作者:P. Ravi、Surya P. Tewari
DOI:10.1016/j.catcom.2013.07.032
日期:2013.12
Nitrodeiodination of iodopyrazoles using nitric acid/Faujasite has been investigated. The present procedure is simple, rapid and convenient and requires no sulfuric acid or oleum and may be applied for the synthesis of several nitropyrazoles in good yields in drug and pharmaceutical industries. (C) 2013 Elsevier B.V. All rights reserved.