Phillips Petroleum Company

John E Mahan

Darryl R Fahey

Lloyd E Gardner

Hans D Holtz

Van C Vives

John R Norell

Cyclic sulfonate-sulfate anhydrides are produced by the reaction of an .alpha.- or .beta.-type sulfolene compound with SO.sub.3. Reaction of the cyclic sulfonate-sulfate anhydrides with alcohols produces alkyl esters of hydroxysulfolane sulfonic acids. The cyclic sulfonate-sulfate anhydrides or the alkyl esters of hydroxysulfolane sulfonic acids can be hydrolyzed to hydroxysulfolane sulfonic acids or their respective salts. The latter can be acylated to alkylcarbonyloxysulfolane sulfonic acids.

Sulfur trioxide adducts of sulfolenes

A process for oligomerizing monoolefins using a catalyst system comprising at least one organoaluminum halide and at least one trans-halo(acyl)bis(triethylphosphine nickel(II) complex.

Trans-halo(acyl)bis(triethylphosphine) nickel(II) complexes

The preparation and use of bis(.mu.-diphenylphosphido)tris(triethylphosphine)dinickel and tris(triethylphosphine)(triphenylphosphine)nickel is disclosed.

Organophosphorus nickel complexes and use thereof

trans-Halo(acyl)bis(triethylphosphine)nickel (II) complexes and methods of preparing and using them are disclosed.

Trans-halo(acyl)bis(triethylphosphine)nickel(II) complexes and

Bis(.mu.-diphenylphosphido)tris(triethylphosphine)dinickel

Organophosphorus nickel complexes and preparation thereof

A process is provided for oxygenating alkyl-substituted aromatic compounds. In the process alkyl-substituted aromatic compounds are contacted with molecular oxygen in the presence of a suitable monocarboxylic acid, an at least partially soluble Te or Se compound, an inorganic bromine compound, and a compound selected from inorganic nitrates and compounds convertible to inorganic nitrates at conditions of the process. In an embodiment of the invention the process is carried out in two distinct steps with contact of the alkyl-substituted aromatic compounds and oxygen in the presence of the essential components produce an ester comprising both an aromatic alcohol and the carboxylic acid with subsequent hydrolyzing of this ester to produce an aromatic alcohol with regeneration of the carboxylic acid.

Promoted liquid phase oxidation of alkyl aromatic compounds

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 halotetrahydropyran is oxidized and dehydrohalogenated employing oxygen and a free radical initiator. 4-Chlorotetrahydropyran is converted to 5,6-dihydro-1,2-pyrone using 2,2'-azobis(2-methylpropionitrile) under elevated oxygen pressure and at a temperature of the order of about 170.degree.F.

Growing community of inventors

Bartlesville, OK, United States of America

John E Mahan