The Elimination-Condensation Reaction between Dimethylaluminum Hydride and Methylphenylphosphine.
Abstract
The aluminum-phosphorus compound of simplest formula Me2AlPMEPh has been prepared by an elimination-condensation reaction between Me2A1H and PMePhH. The aluminum-phosphorus product has been characterized by elemental analyses, cryoscopic molecular weight measurements as well as infrared, 1H and 31P NMR spectral data. The product exists in benzene solution as a trimer (Me2AlPMePh)3. However, the complexity of the spectral data suggest that (Me2AlPMePh) 3 eixsts in benzene solution as a mixture of isomers due to different conformations of the ring and/or different orientations of the aluminum-phosphorus product and its degree of association change when benzene is removed. An amorphous and possibly polymeric material which is no longer completely soluble in benzene at room temperature is formed. Sublimation of the amorphous material at 170 C produces a transparent glass which is also only partially soluble in benzene. Extensive heating of the initial amorphous material or the transparent glass with benzene leads to complete dissolution and reformation of the trimer (Me2AlPM3Ph)3. The nature of the elimination reaction between M32AlH and PMePhH has also been investigated by following the rate of formation of H2 at 22 C in isomeric xylenes solution.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 03, 1986
- Accession Number
- ADA163585
Entities
People
- L. Victoriano
- O. T. Beachley Jr.
Organizations
- University at Buffalo