Chemistry of acetylenic ethers X. Note on the use of ethoxy‐acetylene for the preparation of acid anhydrides
- 1 January 1955
- journal article
- research article
- Published by Wiley in Recueil des Travaux Chimiques des Pays-Bas
- Vol. 74 (1) , 79-80
- https://doi.org/10.1002/recl.19550740111
Abstract
Some years ago it was found that ethoxy‐acetylene (ethoxy‐ethine) is a very mild reagent for the preparation of carboxylic anhydrides.Afterwards we observed that also non‐carboxylic acids are transformed into their anhydrides by this reagent.2 RCOOH + HC ≡ C‐OC2H5 → (RCO)2O + CH3COOC2H52 RSO3H + HC ≡ C‐OC2H5 → (RSO2)2O + CH3COOC2H5From a recent paper by E. R. H. Jones and co‐workers 2) it appears that these investigators examined the same reactions. Experiments with several mono‐ and dibasic carboxylic acids and with a sulphonic acid are recorded. In addition to these examples we give below a description of the use of ethoxy‐acetylene for the preparation of tetraethyl pyrophosphate from diethyl phosphate.Keywords
This publication has 1 reference indexed in Scilit:
- Researches on acetylenic compounds. Part XLIII. A new method for the preparation of alkoxyacetylenesJournal of the Chemical Society, 1954