Yogendra S, Hennersdorf F, Bauzá A, Frontera A, Fischer R, Weigand J J
Department of Chemistry and Food Chemistry, TU Dresden 01062 Dresden, Germany.
Department of Chemistry, Universitat de les Illes Balears, Palma de Mallorca, Spain.
Chem Commun (Camb). 2017 Mar 7;53(20):2954-2957. doi: 10.1039/c7cc00982h.
A carbodiphosphorane ((PhP)C) mediated synthesis of the first triflyloxyphosphonium dication (12+) bearing two electrophilic sites is presented. Depending on the nucleophile, 12+ reacts selectively either at the sulfur atom of the triflyloxy moiety or at the directly attached phosphorus atom. In substitution reactions at the phosphorus atom the triflyloxy moiety serves as a leaving group and enables the synthesis of rare examples of pseudo-halophosphonium dications.
本文介绍了一种由碳二磷烯（(PhP)C）介导的合成方法，用于合成首个带有两个亲电位点的三氟甲磺酸氧基鏻二价阳离子（12+）。根据亲核试剂的不同，12+可选择性地在三氟甲磺酸氧基部分的硫原子上或直接相连的磷原子上发生反应。在磷原子上的取代反应中，三氟甲磺酸氧基部分作为离去基团，使得合成罕见的拟卤化鏻二价阳离子成为可能。
