Council of Scientific and Industrial Research

General Electric Company

Sarada Gopinathan

Changaramponnath Gopinathan

Paul Ratnasamy

Joseph Kuruvilla

John William Fulmer

John C Schmidhauser

Sanjeevani Amrit Pardhy

Chandra Ratnasamy

Puthusseril Varkey Saji

The present invention relates to an improved process for the oxidation of cyclohexane to adipic acid using air as an oxidant and a solid organotransition metal complex as a catalyst. The process comprises comprises reacting cyclohexane with air in the presence of a solid catalyst containing an encapsulated salen or substituted salen metal complex wherein some of the hydrogen atoms of the said organomanganese complex have been substituted by one or more electron withdrawing groups, at a temperature in the range of 20 to 120&deg; C., at a pressure in the range of 50 to 1000 psi, in the presence or absence of solvents, with or without a promoter and isolating the adipic acid formed by conventional methods, such as filtration and centrifugation.

Process for the oxidation of cyclohexane to adipic acid

Aryldialkylmethanes such as cumene are converted to the corresponding hydroperoxides by reaction with oxygen in the presence of a promoter which may be an alkali metal borate such as borax, an alkali metal salt of a polymer such as an acrylic polymer, or an alkaline reagent in combination with a specific proportion of added water or water of hydration, also exemplified by borax. High yields of the hydroperoxide are obtained, particularly when the promoter includes water.

Method for preparing hydroperoxides by oxygenation

This invention provides a process for the manufacture of N-acetyl amino phenol, which process comprises reacting an appropriate phenol and an amide in the presence of a heteropoly acid or its alkali metal salt catalyst.

Process for the preparation of N-acetyl aminophenols

This invention relates to an improved process for the single step oxidation of 3-phenoxytoluene to 3-phenoxybenzaldehyde using molecular oxygen as the oxidant by employing a Ti.sub.2 VMoP.sub.6 O.sub.24 catalyst having particular infrared spectral bands.

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Pune, India

Sarada Gopinathan