Reaction of Oximes of α-Diketones with Diphosphorous Tetraiodide for Preparation of Oxadiazoles and Nitriles
作者:Vikas N. Telvekar、Balaram S. Takale
DOI:10.1080/00397911.2011.595035
日期:2013.1
Abstract The utility of diphosphorous tetraiodide as a new, mild, condensing agent for synthesis of oxadiazole is described. These data indicate the simple dehydration of oximes to 1,2,5-oxadiazole as well as the rearrangements of oximes to normal Beckmann product 1,2,4-oxadiazole. However, mono-oxime of benzil undergoes abnormal Beckman rearrangement to benzaldehyde as major product. The described
摘要 描述了四碘化二磷作为一种新的、温和的缩合剂用于合成恶二唑的用途。这些数据表明肟简单脱水为 1,2,5-恶二唑,以及肟重排为正常贝克曼产物 1,2,4-恶二唑。然而,苯甲醛的单肟经历了异常的贝克曼重排,以苯甲醛为主要产物。所描述的方法对于恶二唑和腈的合成来说既简单又重要。图形概要