54119-31-2Relevant academic research and scientific papers
Acylations des cetones α-β-ethyleniques catalysees par les acides sulfoniques : synthese concomitante de sels de pyrylium et de dihydro-2,3-pyrones-4
Graindorge, Herve,Roussel, Christian
, p. 454 - 458 (2007/10/02)
The acylation of α,β-ethylenic ketones by carboxylic acid anhydrides catalyzed by sulfonic acids lead to the expected unsymmetrical pyrylium salts. 2,3-Dihydro-pyran-4-ones are also formed.The respective yields depend upon the alkyl substituents of the starting material.
PYRYLIUM SALTS FROM FRIEDEL-CRAFTS ACYLATION OF ISOPARAFFINS : ISOOCTANE
Arnaud, Michel,Pedra, Annette,Erre, Claude,Roussel, Christian,Metzger, Jacques
, p. 761 - 764 (2007/10/02)
It is shown that acylation of isooctane in AlCl3/CHCl3 medium leads to 2,6-dialkyl-4-methylpyrynium salts, unsaturated ketones and isobutane.Compared to acylation of other isoparaffins, better yields are obtained due to an autocatalytic process.
