The <i>gem</i>-Dialkyl Effect as a Test for Preliminary Diphosphine Chelate Opening in a Reductive Elimination Reaction
作者:Kathryn L. Arthur、Qi L. Wang、Dawn M. Bregel、Nicole A. Smythe、Bridget A. O'Neil、Karen I. Goldberg、Kenneth G. Moloy
DOI:10.1021/om0500467
日期:2005.9.1
substituents in the carbon backbone of a bidentate phosphine ligand on a reductive elimination reaction involving chelate opening as a preliminary step has been documented. This observation confirms the viability of the gem-dialkyl effect as a mechanistic probe for preliminary phosphine dissociation in reactions of complexes containing chelating diphosphine ligands.
作为初步步骤,已经证明了在双齿膦配体的碳主链中放置宝石-二烷基取代基在涉及螯合物打开的还原消除反应上的显着动力学作用。该观察结果证实了宝石-二烷基效应作为在含螯合二膦配体的络合物的反应中进行初步膦离解的机制探针的可行性。