Abstract: Compounds of the formula: ##STR1## wherein: n=0 or 1;R.sub.1 and R.sub.2 are C.sub.1 to C.sub.3 alkyl groups, or R.sub.2 may be H when n=0; and Y is selected from the group: ##STR2## wherein: m=1-6Z=SO.sub.2, S, C=O, CH.sub.2 or C(CH.sub.3).sub.2 ; and a process for their preparation are described.

Abstract: Diaminodiphenyl-compounds of the structure selected from: ##STR1## wherein R.sub.1 and R.sub.2 can be: H, --CH.sub.3, --C.sub.2 H.sub.5, --C.sub.3 H.sub.7, --C.sub.4 H.sub.9 or ##STR2## Y can be: C(CH.sub.3).sub.2, ##STR3## n=0; 1. are purified by distilling the crude product obtained under vacuum in one step, in the presence of one or more alkaline bases.

Abstract: In a process for the preparation of 4,4'-dihydroxybiphenyl of high purity 4,4'-dibromobiphenyl is hydrolized in the presence of a copper compound catalyst, the insoluble materials comprising the catalyst is filtered off from the product mixture, 4,4'-dihydroxybiphenyl is precipitated by adjusting the pH and crude 4,4'-dihydroxybiphenyl separated from the product mixture is fractionally distilled to obtain substantially pure 4,4'-dihydroxybiphenyl.

Abstract: In a process for the preparation of mixtures of 2,3-dimethylphenol and 3,4-dimethylphenol a mixture of 2,3-dimethyl-bromobenzene and 3,4-dimethyl-bromobenzene is hydrolized in an aqueous alkaline solution in the presence of a copper compound catalyst of the formula:Cu.sub.(n) R.sub.(m)R represents --O or --OH or a residue of an inorganic or of an organic acid;n is 1 or 2; andm is 0, 1 or 2;the reaction being carried out at a temperature in the range between 200.degree. and 300.degree. C.

Abstract: In a process for the preparation of 3-phenoxybenzylalcohol, 3-phenoxytoluene is reacted with dibromodimethylhydantoin in a non-polar solvent, followed by hydrolysis of the products of the first reaction step.The process provides highly pure 3-phenoxybenzylalcohol with high yields.

Abstract: A process is disclosed for the preparation of 2,2-dibromonitrilopropionamide, in which cyanoacetamide is brominated in aqueous medium with bromine or hydrobromic acid, in the presence of an oxidizing agent and at elevated temperature, followed by cooling of the reaction mixture to precipitate the DBNPA.

Abstract: 1,2,5,6,9,10-Hexabromocyclododecane (HBCD) is prepared in an anhydrous process in polar solvents, by the bromination of 1,5,9-cis, trans, trans-cyclododecatriene at relatively high temperatures.

Abstract: The present invention relates to a process for the manufacture of mixtures of 3-phenoxybenzyl bromide and 3-pnenoxybenzal bromide using dibromodimethylhydantoin as brominating agent. According to the process, the reaction between the m-phenoxytoluene and the brominating agent is carried out in a non-polar solvent at temperatures above 65 degrees C. The molar ratio between the reactants is selected in the range of between 0.5:1 to 1.25:1 of the brominating agent towards the 3-phenoxytoluene. In a preferred embodiment, a radical initiator is incorporated being selected from the group consisting of ultraviolet rays and compounds containing azo-groups, peroxides or mixtures thereof. According to a most preferred embodiment the addition of the free radical and of the brominating agent is carried out gradually. The process is characterized by its very high yield, the products obtained being of a very high quality.

Abstract: An improvement in a process for decomposing mixtures of cyclohexane and cyclohexyl hydroperoxide is provided. According to the improved process, a mixture comprising cyclohexane and cyclohexyl hydroperoxide is contacted with a catalyst consisting essentially of Co.sub.3 O.sub.4, MnO.sub.2, or Fe.sub.3 O.sub.4 applied to a suitable solid support, at a temperature from about 80.degree. C. to about 130.degree. C., in the presence of molecular oxygen.

Abstract: An improvement in a process for decomposing mixtures of cyclohexane and cyclohexyl hydroperoxide to mixtures of cyclohexanone and cyclohexanol is disclosed. According to the improved process, stable catalyst dispersions, or solutions derived therefrom, of transition metal complexes of certain 1,3-bis(2-pyridylimino)isoindolines are formed by mixing, in cyclohexanone, cyclohexanol or mixtures of cyclohexanone, cyclohexanol and cyclohexane, cobalt, iron or manganese salts and 1,3-bis(2-pyridylimino)isoindolines.

Abstract: An improvement in a process for decomposing cyclohexyl hydroperoxide to cyclohexanone and cyclohexanol is provided. According to the improved process, a reaction mixture comprising cyclohexane and cyclohexyl hydroperoxide is contacted with two catalyst compositions sequentially for a preselected reaction period, such that the reaction mixture is contacted with a catalytic amount of the first of said catalyst compositions only for about 10 to about 80 percent of the reaction period, and contacted with a catalytic amount of a mixture of the first and second catalyst compositions for the remainder of the preselected reaction time. The first catalyst composition of the invention is a cyclohexane-soluble chromium organic acid salt, and the second catalyst composition is a cobalt, iron, or manganese complex of a 1,3-bis(2-pyridylimino)isoindoline.

Abstract: There is disclosed an improved process of decomposing a reaction mixture containing cyclohexyl hydroperoxide to form a mixture containing cyclohexanone and cyclohexanol comprising using in the decomposition step a catalyst composition consisting essentially of (a) a specified salt of chromium, cobalt, iron, manganese, molybdenum or vanadium and (b) as a stabilizing agent, an alkylsulfonic acid, an alkylarenesulfonic acid, an alkylammonium sulfonate, or an alkylphosphonium sulfonate.