2,5-DIAZACYCLOPENTADIENYUDENE: A STANDARD CARBENE OR A HIGHLY REACTIVE DIRADICAL ?
作者:Núria Bru、Jaume Vilarrasa
DOI:10.1246/cl.1980.1489
日期:1980.12.5
2,5-Diazacyclopentadienylidene (2H-imidazolylidene), generated either by photolysis or thermolysis from 2-diazo-2H-imidazole, reacts with benzene derivatives to give mainly a mixture of o-, m-, and p-substituted 2-phenylimidazoles. The carbene shows a strong diradical character, in sharp contrast with the well-known behavior of cyclopentadienylidene.
2,5-二氮杂环戊二烯炔(2H-咪唑氮烯)通过光解或热解从2-二氮-2H-咪唑生成,与苯衍生物反应,主要生成o-、m-和p-取代的2-苯基咪唑混合物。该卡宾表现出强烈的双自由基特性,与众所周知的环戊二烯基炔的行为形成鲜明对比。