Structure and properties of phosphonium ylides obtained by the reaction of 3-phosphorylated 1,4-dichloro-2-aza-1,3-dienes with sodium azide
作者:Luc Van Meervelt、Roman N. Vydzhak、Vladimir S. Brovarets、Nikolai I. Mishchenko、Boris S. Drach
DOI:10.1016/s0040-4020(01)80861-9
日期:1994.1
formula RCClC (NCClAr)P+Ph3 Cl− react with an excess of sodium azide in a peculiar manner. As a result, phosphoniumylides are produced. They are stabilized with a nitrile and a 5-aryltetrazol-1-yl group or with two substituted tetrazolyl residues as confirmed by X-ray structural analysis. All the ylides obtained exhibit low reactivity and do not enter into the Wittig reaction, but one of them was found