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Abstract
Abstract The reaction of 1,2-diamines 1a-c with Ph3PBr2 in the presence of triethylamine gives rise to the corresponding diphosphonium salts 2a-c in good yields. Treatment of these salts with NaH at room temperature in CH2Cl2 affords the diiminophosphoranes 3a-c in near quantitative yields. Derivatives 3a,b react with (CH3CN)2PdCl7 giving stable (diiminophosphorane)PdCl2 complexes 4a,b. The solid state structure of complex 4a is described.
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