Process for the preparation of optionally substituted 2-benzyl-t

Details Process for the preparation of optionally substituted 2-benzyl-t Process for the preparation of optionally substituted 2-benzyl-t

1986-12-12

1989-03-21

Brust, Joseph Paul

Organic compounds -- part of the class 532-570 series

Organic compounds

Nitriles

558413, 558414, 558424, 558425, 568 34, 568635, 568928, 570184, 585462, 564181, 564221, C07C12160, C07C12166, C07C12162

Patent

active

048144835

ABSTRACT:
Optionally substituted 2-benzyl-toluenes can be prepared by reaction of optionally substituted 2-benzyl-tert.-alkyl-toluenes with an optionally substituted aromatic hydrocarbon in the presence of anhydrous iron-(III) halide. The reaction is carried out at ambient to elevated temperature. The optionally substituted aromatic hydrocarbon is employed in molar excess, relative to the 2-benzly-tert.-alkyl-toluenes.

REFERENCES:
patent: 2403748 (1946-07-01), Olin
patent: 3739040 (1973-06-01), Boggs
Patent Abstracts of Japan, unexamined application, Feld C, Band 9, Nr. 317, 12. Dec. 1985 The Patent Office Japanese Government Seite 64 C 319 *Zusammenfassung Nr. 60-152 429 (Suketaka Harada).
The Journal of Organic Chemistry, Band 43, 1978 M. Tashiro et al. "Studies on selective preparation of aromatic compounds.15, The Lewis acid catalyzed transalkylation of some tert-butyl-diphenylmethanes and -ethanes in aromatic solvents" Seiten 1413-1420.
Organic Preparation and Procedures International, Band 10, Feb. 1978 V. Bohmer et al. "The t-butyl group as a possible protective group in the synthesis of oligo (hydroxy-1,3-phenylene)methylenes" Seiten 113-121.
Synthesis, 1979, Nr. 12, Dec. 1979 M. Tashiro "Selective synthesis of aromatic compounds using positional protective groups" Seiten 921-936.
Houben Weyl "Methoden der organischen Chemie", 4. Auflage, Band V/2b "Arene, Arine" 1981 Georg Thieme Verlag, Stuttgart Seiten 238-254.

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