Phenol

About: Phenol is a research topic. Over the lifetime, 10722 publications have been published within this topic receiving 182898 citations. The topic is also known as: carbolic acid & Karbolsaeure.

Reaction between Phenol and 130-190°C Fraction of Liquid Pyrolysis Products in the Presence of Catalyst KU-23 in a Continuous Plant

Abstract: The results of the alkylation of phenol by 130–190°C fraction of the liquid pyrolysis products in the presence of a catalyst KU-23 of H-form carried out in a continuous plant were reported. Optimal conditions for the synthesis of p-alkyl phenol were found. It was shown that under the optimal mode a yield of target alkyl phenol was 69.7% of theory and selectivity, 93.3%. p-Alkyl phenolamine resin tested as an antioxidant engine oil at high temperatures was synthesized on the basis of p-alkyl phenol and hexamine.

Preparation of oxirane derivative

Abstract: PURPOSE:To obtain the titled substance, an intermediate for synthesizing a compound useful as a remedy for arrhythmia, etc. by one stage easily, by reacting a readily obtainable propanol derivative as raw material with an aromatic alcohol without using epichlorohydrin, a carcinogenic substance. CONSTITUTION:A propanol derivative shown by the formula I (Y is H or acyl) is reacted with an aromatic alcohol, e.g., phenol, 4-chlorophenol, 1-naphtol, etc. shown by the formula ArOH (Ar is aromatic group) in the presence of a base, e.g., sodium methoxide, sodium hydroxide, etc. in a solvent, e.g., methanol, diethyl ether, etc. at room temperature to 80 deg.C, to give a compound shown by the formula II. Preferably the amount of the base used is equimolar or more to about 5mol based on propanol derivative, and the amount of the propanol derivative used is equimolar to about 5mol based on aromatic alcohol.

The cis–trans transformation of cyclohexane formic acid ester compounds

Abstract: Trans-alkyl cyclohexane formic acid phenol ester compounds are synthesised by reaction of trans-cyclohexane formic acid and phenols. This process also produces many harmful cis-alkyl cyclohexane formic acid phenol ester compounds that are harmful to the environment. Using p-toluenesulphonic acid as the catalyst in this experiment, these cis compounds were transformed to their trans form. The yields of trans-alkyl cyclohexane formic acid phenol ester compounds were more than 70%, which was significantly higher when compared to the yields of 40–60% obtained using the control method. The effects of catalyst, reaction time and reaction temperature on cis–trans transformation were investigated. The possible mechanism of cis–trans transformation has been discussed in this report.

Phenol hydroxylation catalyst, preparation method thereof and method for synthesizing hydroquinone

Abstract: The invention relates to a phenol hydroxylation catalyst, a preparation method thereof and a method for synthesizing hydroquinone. The preparation method of the phenol hydroxylation catalyst comprisesthe following steps: providing silicon dioxide alcogel; mixing an alcoholic solution of a metal salt and the silicon dioxide alcogel, and carrying out supercritical drying, thereby obtaining the phenol hydroxylation catalyst. According to the preparation method of the phenol hydroxylation catalyst, the alcoholic solution of the metal salt is prepared from a catalytic active site and is mixed withthe silicon dioxide gel, and then, supercritical drying is carried out, so that the active site can be uniformly loaded to silicon dioxide, meanwhile, the specific surface area of silicon dioxide canbe increased, and thus, the prepared phenol hydroxylation catalyst has relatively high catalytic activity.