Carboxylphosphanes and Carboxyphosphane Chalcogenides |
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| Authors: | Heinz-Werner Hennig Peter Neu Peter Sartori |
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| Affiliation: | Fachgebiet Anorganische Chemie, Universit?t -Gesamthochschule Duisburg , Lotharstraβe 1, D 4100, Duisburg , 1 |
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| Abstract: | Abstract Low temperature reactions of organo chloro phosphanes with carboxylic acids and their salts allow the preparation of carboxyphosphanes - mixed anhydrides of carboxylic acids with phosphinic acids. These are subject to thermal rearrangement reaction of the Michaelis-Arbusov type. Molecular oxygen converts them into carboxy-phosphorane oxides. These compounds are also obtainable by reacting organochlorophosphane oxides with carboxylates. Their thermal stability is higher than that of the P(III)compounds. Analoguous reactions of P-sulfides and selenides give the corresponding thio and seleno phosphoranes with higher thermal stability. At elevated temperatures a number of rearrangement reactions occur, thus producing phosphane oxides and phosphinic acid phosphinyl alkaryl ester. The reaction products of the following reaction sequences are discusses with regard to their NMR-, IR-, MS-spectra and hydrolytic and thermal properties: |
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