Monsanto Company

Norman A Fishel

David E Gross

A method for preparing thiophenolic compounds is described comprising reacting a phenol and hydrogen sulfide in the presence of a vanadia catalyst. It is preferred to carry out the process of this invention at low pressures, i.e. at pressures lower than 100 psi, atmospheric pressure being very suitable, although the process is operable at subatmospheric pressures. Preferred phenols, catalysts and reaction conditions are also described.

Production of thiophenols

A process for production of orthophenylphenol is disclosed. More specifically, the invention relates to the conversion of phenol or diphenyl ether into orthophenylphenol in a two-stage process in which dibenzofuran is an intermediate.

Process for production of orthophenylphenol

A method for preparation of heterocyclic fused ring compounds by dehydration and dehydrogenation of certain phenolic compounds in the presence of a cerium oxide catalyst is disclosed. Preferred phenolic compounds, catalytic materials, and reaction conditions also are described.

Ceria catalyzea conversion of phenols to dibenzofurans

A method for preparation of heterocyclic fused ring compounds by dehydrogenation of certain aromatic ether compounds in the presence of a cerium oxide catalyst is disclosed. Preferred aromatic ether compounds, catalytic materials, and reaction conditions also are described.

Conversion of diphenylethers to dibenzofurans using catalysts containing

A method for preparation of heterocyclic fused ring compounds by dehydration and dehydrogenation of certain phenolic compounds in the presence of water vapor and in the presence of a cerium oxide catalyst is disclosed. Preferred phenolic compounds, catalytic materials, and reaction conditions also are described.

Ceria catalyzed conversion of phenols to dibenzofurans in the presence

The present invention relates to a process for the preparation of orthophenylphenol and derivatives thereof, specifically by the reaction of dibenzofuran and its derivatives with hydrogen, at elevated temperatures, in the presence of a catalyst comprised of one or more Group VIII elements dispersed on a porous magnesia support.

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Olivette, MO, United States of America

Norman A Fishel