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

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

C - Chemistry, Metallurgy

07

C

260/653.1, 260/6

C07C 13/70 (2006.01) C07C 1/32 (2006.01) C07C 25/22 (2006.01)

Patent

CA 1308742

ABSTRACT Process for the preparation of (2,2)-paracyclopha- ne or derivatives thereof by the Hofmann elimination of p-methyl-benzyl-trimethylammonium hydroxide or deriva- tives thereof, in an aqueous solution of an alkali metal hydroxide, wherein said elimination is carried out in the presence of a compound of the formula (I): (R)m- A - (X)n (I) wherein A represents an aromatic group, X an electron donor group, R hydrogen or an alkyl group containing from 1 to 4 carbon atoms, n is an/integer comprised between 1 and 6 and m is zero or an integer comprised between 1 and a value such that the sum m+n be equal to the number of substi- tuable positions in the aromatic group.

563384

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