Abstract: Aluminosilicotitanates having a framework structure isomorphous with zeolite beta are prepared by heating a solid amorphous SiO.sub.2 --TiO.sub.2 --Al.sub.2 O.sub.3 cogel which has been impregnated with a quaternary tetraethyl ammonium species. The aluminosilicotitanates, which are useful oxidation catalysts, are obtained in high yield using a minimum quantity of template.

Abstract: Epoxides are produced by an integrated process involving molecular oxygen oxidation of an alkylammonium salt of a sulfonic acid-substituted anthrahydroquinone, epoxidation of an ethylenically unsaturated substrate using the hydrogen peroxide-containing product obtained by such oxidation in the presence of a titanium silicalite catalyst, and regeneration of the anthrahydroquinone by hydrogenation of the anthraquinone co-product. Oxidation and epoxidation may be performed concurrently. The alkylammonium salts have the advantage of being highly soluble in polar protic media such as water and lower alcohols.

Abstract: An integrated process for producing cyclohexanone oxime, a caprolactam precursor, is provided wherein a secondary alcohol is utilized to generate the hydrogen peroxide oxidizing agent and as a reaction medium for ammoximation. The ketone produced as a co-product is recycled back to the secondary alcohol by hydrogenation.

Abstract: Olefins are epoxidized by hydrogen peroxide in the presence of a modified titanium-containing molecular sieve having a framework structure isomorphous with zeolite beta and comprised of Si, Ti, and Al. The molecular sieve is modified by substituting the aluminum-associated cationic sites with ammonium, alkali metal, or alkaline earth cations instead of protons.

Abstract: Epoxides are produced by an integrated process involving molecular oxygen oxidation of an aliphatic secondary alcohol, separation of the ketone co-product, epoxidation of an ethylenically unsaturated substrate by the substantially ketone-free oxidation product in the presence of a titanium silicalite catalyst, and regeneration of the secondary alcohol by hydrogenation of the ketone co-product.

Abstract: A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein hydrogen peroxide is the oxidant.

Abstract: Olefins are epoxidized by hydrogen peroxide in the presence of a crystalline titanium silicalite zeolite catalyst having a relatively high titanium content. High yields of epoxides with minimal non-selective loss of either hydrogen peroxide or olefin are realized.

Abstract: A process for preparing trisubstituted ureas is disclosed. A nitroarene is reacted with carbon monoxide and a secondary amine in the presence of a Group VIII transition metal catalyst and optionally one or more promoters selected from primary amines, halide ion-containing compounds, and chelating phosphorus and nitrogen compounds.

Abstract: Epoxides are produced by an integrated process involving air oxidation of an aryl-substituted secondary alcohol, epoxidation of an olefin by the secondary alcohol oxidation product in the presence of a titanium silicalite catalyst, and generation of the secondary alcohol by hydrogenation.

Abstract: Olefins are epoxidized by hydrogen peroxide in the presence of an organorhenium oxide catalyst and an alkyl aryl secondary alcohol solvent. High yields of epoxides with minimal non-selective loss of either hydrogen peroxide or olefin are realized. The epoxidation may comprise one step of an integrated process wherein an oxidant mixture is generated by molecular oxygen oxidation of the alkyl aryl secondary alcohol and used directly in the epoxidation without further purification or extraction.

Abstract: Prochiral ethylenically unsaturated substrates are converted to chiral epoxides by reaction with optically active hydroperoxides in the presence of transition metal catalysts. For example, chiral glycidol is obtained by asymmetric epoxidation of allyl alcohol using optically active ethyl benzene hydroperoxide and a titaniuym alkoxide/tartrate catalyst. The chiral epoxide products are versatile synthetic intermediates.

Abstract: A process for making aryl-, heteroaryl-, or cycloalkyl-substituted alkyl urethanes is disclosed. The urethanes are prepared by electrophilic carbamylation of aromatic compounds with alkylene bis(carbamic acid esters) or the equivalent in the presence of an acidic catalyst and a polar aprotic solvent. The alkyl urethanes may be cracked to give the corresponding substituted alkyl isocyanates.

Abstract: Aromatic bis (dialkyl) ureas such as the bis (dimethyl) urea of 2,4-toluenediamine are prepared by reacting an aromatic diamine with isocyanic acid (HNCO) to convert the amino groups of the diamine to urea groups (--NHCONH.sub.2) to give an aromatic bis urea which is then reacted with a dialkyl amine having from 1 to 8 carbon atoms to produce the desired aromatic bis (dialkyl) urea.

Abstract: Diphenylmethane mono and dicarbamates and polymethylene polyphenyl carbamate homologs and derivatives of these compounds are produced by the protonic or Lewis acid catalyzed rearrangement of an (alkoxycarbonyl)phenylaminomethylphenyl compound having the general formula ##STR1## INCLUDING THE HIGHER HOMOLOGS OF SUCH COMPOUNDS, WHEREIN X, Y AND Z, WHICH ARE DIFFERENT ON THE RING, ARE AN ALKYL GROUP HAVING FROM 1 TO 3 CARBON ATOMS, AN --NHCOOR, --CH.sub.2 ArNHCOOR or --N(COOR)CH.sub.2 Ar group; x, y and z may also be at least one hydrogen; R is a 1 to 3 carbon alkyl group and Ar is phenyl which may be substituted with a 1 to 3 carbon atom alkyl group.

Abstract: A method for the removal and recovery of selenium from a urethane solution containing selenium compounds, which may be in the form of inorganic selenium and/or organoselenium compounds, which comprises contacting the selenium-containing urethane solution at a suitable temperature with an aqueous hydrogen peroxide solution and recovering the selenium from the resulting selenium compound enriched aqueous phase in a form suitable for reuse in the preparation of urethanes, the deselenized urethane remaining in the hydrocarbon and/or organic phase.

Abstract: A process for the recovery of selenium from a urethane solution containing selenium compounds which may be in the form of metallic selenium, inorganic selenium and/or organoselenium compounds which comprises contacting the selenium-containing urethane solution at suitable temperatures with a supported metal or a mixture of metals and/or metal oxide compounds, said metal selectively chosen from Group B metals, i.e., Group IB through VIIIB, metals of the Periodic Table and particularly supported copper and mixtures of copper and other metal oxide compounds of said group.

Abstract: A process for the production of ureas by contacting at elevated temperatures and pressures in a basic solution a nitrogenous organic compound containing at least one non-cyclic group, in which a nitrogen atom is directly attached to a single carbon atom and is also attached through a double bond to an oxygen or another nitrogen atom, with carbon monoxide and with water or another nitrogenous organic compound in which the nitrogen atom is directly attached to at least one hydrogen atom, in the presence of an active amount of a catalyst selected from the group consisting of selenium, sulfur, compounds containing selenium, sulfur compounds and mixtures thereof.

Abstract: A process for the preparation of oxalate esters by the catalytic oxidative carbonylation of orthoborate, metaborate and polyborate esters or mixtures thereof with carbon monoxide and oxygen or an oxygen-containing gas in the presence of a metal salt catalyst, an amine base and at least a catalytic amount of an alcohol. Preferably a catalytic amount of particular metal oxidizing salts are employed along with a catalytic amount of an amine salt compound which may be formed in situ by the addition of an acid. Alternatively various counterions and ligands of the metal salt catalysts may be employed.

Abstract: A process for the preparation of oxalate esters by the catalytic oxidative carbonylation of an amide acetal having the formula ##STR1## with carbon monoxide and oxygen or oxygen-containing gas in the presence of a metal salt catalyst, an amine base and a catalytic amount of an alcohol. Preferably a catalytic amount of particular oxidizing metal salts is employed along with a catalytic amount of an amine salt compound which may be formed in situ by the addition of an acid. Alternatively various counterions and ligands of the metal salt catalyst may be employed.

Abstract: A process for the recovery of selenium from a urethane solution containing selenium compounds which may be in the form of metallic selenium, inorganic selenium and/or organoselenium compounds which comprises contacting the selenium-containing urethane solution at suitable temperatures with a supported metal or a mixture of metals and/or metal oxide compounds, said metal selectively chosen from Group B metals, i.e., Group IB through VIIIB, metals of the Periodic Table and particularly supported copper and mixtures of copper and other metal oxide compounds of said group.