Abstract
A novel, efficient method for the synthesis of spirophosphoranes containing a pentacoordinated P–C bond has been developed by P-alkylation reaction between pentacoordinated hydrospirophosphorane and halohydrocarbon. A series of new spirophosphoranes were synthesized, and the relative phosphorus configurations were presumed by 1H NMR NOESY or coupling constants experiment. Furthermore, the stereochemical mechanism of the pentacoordinated P-alkylation reaction was proposed by the verified experiment and 31P NMR tracing experiment.
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