Investigation of the Reaction Order for Nucleophilic Substitution of Dialkyl Methylphosphonates by Alkoxides
Abstract
The rate of nucleophilic substitution at the phosphorus center of dialkyl methylphosphonates by methoxide and ethoxide has been studied to investigate the possible involvement of hexacoordinated phosphorus species in this reaction. For alkoxide concentrations less than ca. 1.5 M the rate increases with the square of alkoxide concentration. However, consideration of the activity of the alkoxides. represented by an appropriate acidity function. reveals that only one equivalent of alkoxide is involved in the rate-determining step. Thus, there is no requirement to invoke the intermediacy of a hexacoordinated species in the reaction pathway.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1992
- Accession Number
- ADA274879
Entities
People
- D. R. Leslie
- G. J. Long
- S. Panelidis
Organizations
- Defence Science and Technology Group