Process for the preparation of (2,2)-paracyclophane

Details Process for the preparation of (2,2)-paracyclophane Process for the preparation of (2,2)-paracyclophane

1986-10-29

1987-06-23

Pal, Asok

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire cyclic molecules or entire...

585359, 585426, 585427, 585428, C07C 272

Patent

active

046754628

ABSTRACT:
A process for the preparation of (2,2)-paracyclophane by conversion of p.methylbenzyltrimethylammonium halide to the corresponding hydroxide and by Hofmann elimination from p.methylbenzyltrimethylammonium hydroxide, wherein both reactions are carried out in the same aqueous solution of an alkaline hydroxide and in the presence of a copper or iron compound.

REFERENCES:
patent: 3247274 (1966-04-01), Pollart
patent: 3258504 (1966-06-01), Lenaers
patent: 3754015 (1973-08-01), Hedaya
patent: 4359327 (1982-11-01), Armand et al.
patent: 4532369 (1985-07-01), Hartner
Neuschwander et al., J. Chemistry, vol. 20, 288-290 (1980).
Gray et al., J. Am. Chem. Soc., vol. 101, (8), 2128-36 (1979).

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