ChemInform Abstract: REACTION OF CRESOLS WITH CYCLOHEXENE IN THE PRESENCE OF POLYPHOSPHORIC ACID

Regioselective --cyclohexylation of phenols with cyclohexanol in the presence of transition metal modified zeolite-Hβ

“…It is also useful in the preparation of 2-phenylphenol, which is an important disinfectant as well as fungicide. There are reports of cyclohexylation of phenol using cyclohexene, many of which are vapour phase reactions [18][19][20][21]. When the alkylation of phenol by cyclohexene is carried out at a low-temperature cyclohexyl phenyl ether is the predominant product [22].…”

Alkylation of Phenol with Cyclohexanol Catalyzed by Acidic Ionic Liquid

“…This reaction is widely investigated since paracyclohexylphenol (4-CP) products is widely used as an intermediate in the manufacture of dyestuffs and dyes, particularly in the manufacture of colorants for plastics, and is also used as biocides. At present catalysts used for this reaction include sulfuric acid [1,2], phosphoric acid [2], polyphosphoric acid [3][4][5], aluminum salt of diphenyldithiophosphoric acid [6], H-zeolite Y [7] and Silicasupported BF3 [8]. Liquid acid catalysts cause equipment corrosion and environmental pollution while solid acids deactivate rapidly due to the build-up of coke or fouling.…”