A Facile One-Pot Synthesis of 3,5-Disubstituted Isoxazole Derivatives Using Hydroxy (Tosyloxy) Iodobenzene
作者:Ravindra D. Jadhav、Hitesh D. Mistry、Hashim Motiwala、Kishorkumar S. Kadam、Shivaji Kandre、Amol Gupte、Ashok K. Gangopadhyay、Rajiv Sharma
DOI:10.1002/jhet.1556
日期:2013.7
Hydroxy (tosyloxy) iodobenzene (HTIB), a hypervalent iodine reagent, has been extensively used for oxidative transformations. We have developed a one‐pot synthesis wherein aldoximes when reacted with alkynes in the presence of HTIB result in the direct formation of isoxazoles. This simple and straightforward reaction allows for ease of purification while leading to the formation of high purity 3,5‐disubstituted
Expeditious preparation of isoxazoles from Δ2-isoxazolines as advanced intermediates for functional materials
作者:Guilherme D. Vilela、Rafaela R. da Rosa、Paulo H. Schneider、Ivan H. Bechtold、Juliana Eccher、Aloir A. Merlo
DOI:10.1016/j.tetlet.2011.09.122
日期:2011.12
A collection of isoxazoles derivatives has been efficiently synthesized in three steps. The oximation reaction of aldehydes followed by nitrile oxide [3+2] 1,3-dipolar cycloaddition and MnO2-oxidation reaction furnished the title compounds which were purified by simple filtration on celite (R). (C) 2011 Elsevier Ltd. All rights reserved.