Abstract: A process for producing alpha-tocopherol from non-alpha-tocopherols comprising reacting the tocopherol with formaldehyde, carrying out the reaction at a temperature of at least about 175.degree. C. in the presence of a catalytic amount of an acidic ion exchange resin and subjecting the reaction mixture to catalytic hydrogenation.

Abstract: This invention relates to the dehydrogenation of a 3-.beta.-hydroxy steroid or a mixture of soy sterols to form the corresponding mixture of .DELTA..sup.4 -3-keto derivatives of phytosterols, the improvement which comprises dehydrogenating the steroid or mixture of sterols using an activated non-pyrophoric nickel catalyst and carrying out the oxidation in the presence of a diaryl ketone. One such process uses a non-pyrophoric Raney nickel type catalyst and a diaryl ketone, such as benzophenone as a hydrogen acceptor.

Abstract: This invention relates to the dehydrogenation of a 3-.beta.-hydroxy steroid or a mixture of soy sterols to form the corresponding mixture of .DELTA..sup.4 -3-keto derivatives of phytosterols, the improvement which comprises dehydrogenation of the steroid or mixture of sterols using a supported nickel catalyst and carrying out the dehydrogenation in the presence of at least two chemically different hydrogen acceptors. One such process uses a supported nickel catalyst and a dialkyl ketone, such as methyl ethyl ketone, and an olefin, such as 1-hexene, as the two different hydrogen acceptors.

Abstract: This invention relates to the separation of crude mixtures of sterols, and more particularly it relates to the removal of stigmasterol derived products from crude mixtures of sterols. The present invention relates more specifically to a process for separating stigmasterol-derived products from phytosterol materials containing mixtures of stigmasterol, sitosterol and campesterol. These mixtures are reacted to form the corresponding .increment..sup.4 -3-keto derivatives of phytosterols. The .increment..sup.4 -3-keto derivatives of phytosterols are reacted by ozonolysis to form the 4-stigmasten-3-one-derived aldehyde material, 3-ketodinor-4-cholen-22-aldehyde, which can be isolated from the other .increment..sup.4 -3-keto derivatives of phytosterol by either chromatography or by treatment with sodium bisulfite and extraction with a suitable organic solvent such as toluene.

Abstract: This invention relates to the separation of crude mixtures of sterols, and more particularly it relates to the removal of stigmasterol derived products from crude mixtures of sterols. The present invention relates more specifically to a process for separating stigmasterol-derived products from phytosterol materials containing mixtures of stigmasterol, sitosterol and campesterol. These mixtures are reacted to form the corresponding mixture of phytosterol i-methyl ethers. The mixed phytosterol i-methyl ethers are reacted by ozonolysis to form the stigmasterol-derived aldehyde material, 6-.beta.-methoxy-3.alpha.,5.alpha.-cyclodinorcholanaldehyde, which can be isolated from the phytosterol i-methyl ethers by either chromatography or by treatment with sodium bisulfite and extraction with a suitable organic solvent such as toluene.

Abstract: Decahydro-3,3,8,8-tetramethoxy-2,7-epithio-1,4-ethanonaphthalene-5,9-dione, decahydro-3,3,8,8-tetraethoxy-2,7-epithio-1,4-ethanonaphthalene-5,9-dione, decahydro-dispiro[1,3-dioxolane-2,3'-(2',7'-epithio-1',4'-ethanonaphthalen e)-8',2"-[1,3]dioxolane]-5',9'-dione have been found to be effective as secondary antioxidants for polyolefins.

Abstract: Process for preparation of a 4-aminoquinazoline which comprises the steps of1. reacting an isatoic anhydride with an equimolar amount of ammonia in the presence of dimethyl formamide, the weight of dimethyl formamide to isatoic anhydride being from about 1:1 to about 10:1;2. adding to the solution from about 1 to about 2 mole proportions of phosphorous oxychloride based on the amount of isatoic anhydride while maintaining the solution at a temperature of from about -10.degree. to about 15.degree.C.;3. increasing the temperature of the solution to about 40.degree. to about 55.degree.C. and maintaining the solution in this temperature range for at least 20 minutes;4. adding sufficient water to hydrolyze an excess phosphorous oxychloride; any5. adding to the reaction mixture at least one mole proportion based on the amount of isatoic anhydride in step (1) of an amine and sufficient base to render the mixture neutral or basic;6. heating the reaction mixture at a temperature from about 70.degree. to about 100.