metal‐free hydrophosphinylation of unactivatedalkenes with ethyl and butyl phosphinates is described. The reaction works with a low catalyst loading of 9‐mesityl‐10‐methylacridinium perchlorate (Fukuzumi photocatalyst, 0.5 mol %) in the presence of diphenyliodonium triflate as oxidant. The reaction proceeds smoothly and covers a broad scope of substrates. Detailed mechanistic investigations, including EPR
Hydrophosphinylation of Unactivated Terminal Alkenes Catalyzed by Nickel Chloride
作者:Stéphanie Ortial、Henry C. Fisher、Jean-Luc Montchamp
DOI:10.1021/jo4008749
日期:2013.7.5
The room-temperature hydrophosphinylation of unactivated monosubstituted alkenes using phosphinates (ROP(O)H2) and catalytic NiCl2 in the presence of dppe is described. The method is competitive with prior palladium-catalyzed reactions and uses a much cheaper catalyst and simple conditions. The scope of the reaction is quite broad in terms of unactivated terminal olefins, proceeds at room temperature