Preparation of O-benzyl toluene

Details Preparation of O-benzyl toluene Preparation of O-benzyl toluene

1981-02-24

1982-07-13

Shaver, Paul F.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire cyclic molecules or entire...

585426, C07C 202, C07C 612, C07C 1328, C07C 1516

Patent

active

043396216

ABSTRACT:
A process for the preparation of diphenylmethanes and especially of unsubstituted and alkyl substituted diphenylmethanes such as diphenylmethane (DPM) itself and 2-benzyl toluene (OBT) which is an intermediate in the preparation of anthraquinone.
The process involves the reaction of a benzene with an .alpha.-chloromethyl benzene in the presence of sulphuric acid and a cationic surfactant, such as a long chain quaternary ammonium salt, or a non-ionic surfactant susceptible to protonation under strong acid conditions, such as an alkoxylated alkyl phenol.

REFERENCES:
patent: 3000985 (1961-09-01), Schmerling
patent: 3799991 (1974-03-01), Smith
patent: 4049733 (1977-09-01), Martan
patent: 4117019 (1977-12-01), Eilingsfeld

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