Process for isomerizing endo-form of aromatic group-containing n

Details Process for isomerizing endo-form of aromatic group-containing n Process for isomerizing endo-form of aromatic group-containing n

1994-01-10

1995-10-10

Pal, Asok

Chemistry of hydrocarbon compounds

Product blend, e.g., composition, etc., or blending process...

Component of indefinite molecular weight greater than 150

585 12, 585 24, 528281, 528282, 528283, C07C 1300

Patent

active

054572495

ABSTRACT:
A process for isomerization of an endo-form of aromatic group-containing norbornenes represented by the following formula (I) to an exo-form which comprises bringing the endo-form into contact with a solid acid catalyst. ##STR1## wherein p is 0 or an integer of 1 or more, q and r are each 0, 1 or 2, R.sup.1 to R.sup.15 are each independently hydrogen or halogen atom, aliphatic hydrocarbon group, aromatic hydrocarbon group or alkoxy group, R.sup.5 (or R.sup.6) are R.sup.9 (or R.sup.7) may be linked together through an alkylene group of 1-3 carbons or may be directly linked together.

REFERENCES:
patent: 4931520 (1990-06-01), Yamanashi et al.
patent: 5106931 (1990-08-01), Sagane et al.
Chemical Abstracts, vol. 94, No. 9. 2 Mar. 1981, Columbus Ohio, US; Abstract no. 65212F, IDEITSU KOSAN: "exo-Trimethylenenorbornance"P. 683; column 2; & JP 80 72,122, 30 May 1980 abstract.

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