Phillips Petroleum Company

John R Norell

George B Fozzard

Lloyd E Gardner

John E Mahan

Diacyloxyolefins are isomerized by contacting one or more diacyloxyolefins with a catalyst system comprising selenium dioxide and a suitable carboxylic acid. There can be additionally present in the catalyst system at least one compound selected from the group consisting of a carboxylic acid anhydride, a polar compound and an ionic reagent.

Diacyloxybutene isomerization catalysts comprising selenium dioxide and

Diacyloxyolefins are isomerized by contacting one or more diacyloxyolefins with a catalyst system comprising selenium dioxide and a suitable carboxylic acid. There can be additionally present in the catalyst system at least one compound selected from the group consisting of a carboxylic acid anhydride, a polar compound, and an ionic reagent.

Diacyloxybutene isomerization with selenium dioxide

In processes of preparing unsaturated dinitriles from olefins, unsaturated mononitriles, and a monoadduct reaction product of an olefin and an unsaturated mononitrile in which undesirable internally unsaturated monoadduct is formed, the improvement of inhibiting the formation of internally unsaturated monoadduct by decomposing at least a portion of the recycle stream of monoadduct to form olefin and unsaturated mononitrile, and passing the thus-formed olefin and unsaturated mononitrile to the reaction.

Unsaturated dinitrile preparation

Acids containing 2n+1 carbon atoms and esters containing [(2n+1) + n'] carbon atoms are produced, respectively, by the reaction of olefins containing n carbon atoms with carbon monoxide and water or alcohols containing n' carbon atoms in the presence of trifluoromethanesulfonic acid. The carbon number of esters from diols is given by [2(2n+1) + n'] wherein n' represents the carbon number of the diol.

Acid and ester production

Vinylidene chloride and vinylidene bromide are alkylated by reaction with alkylating agents such as selected olefins, tert-alkyl halides, and secondary or tertiary alcohols in a reaction medium comprising trifluoromethane-sulfonic acid. In specific embodiments, the reaction medium can additionally comprise water, methanol, and BF.sub.3.

Alkylation of vinylidene chloride and vinylidene bromide

A mixture of olefins is separated and analyzed by means of a chromatographic column which contains silver trifluoromethanesulfonate.

Chromatographic separation of olefins

Aliphatic and aromatic nitriles are trimerized to substituted symmetrical triazines in the presence of trifluoromethanesulfonic acid.

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Bartlesville, OK, United States of America

John R Norell