Accession Number:

AD0613775

Title:

DERIVATIVES OF PYROMELLITIC ACID. 1,2,4,5TETRASUBSTITUTED CYCLOHEXANES,

Descriptive Note:

Corporate Author:

MICHIGAN UNIV ANN ARBOR

Personal Author(s):

Report Date:

1963-01-10

Pagination or Media Count:

4.0

Abstract:

Catalytic hydrogenation of pyromellitic acid yields one of the five possible stereoisomeric 1,2,4,5-cyclohexanetetracarboxylic acids. The latter acid was utilized as starting material for the preparation of a variety of tetrasubstituted cyclohexanes. 1,2,4,5-Tetrakisiodomethylcyclohexane, precursor of 1,2,4,5-tetramethylenecyclohexane and its aromatized dimer tetramethyl 2.2 paracyclophane, was derived from pyromellitic acid in an optimum over-all yield of 62. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE