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Helical Phenanthrenes 3: Syntheses, Enrichment of Enantiomers, and Barriers to Racemization of Twisted 9, 10-Phenanthrenequinones

Fritsch, R. and Hartmann, E. and Andert, D. and Mannschreck, Albrecht (1992) Helical Phenanthrenes 3: Syntheses, Enrichment of Enantiomers, and Barriers to Racemization of Twisted 9, 10-Phenanthrenequinones. Chemische Berichte 125 (4), pp. 849-855.

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Abstract

The known syntheses of the 9, 10-phenanthrenequinones 10a – c were improved by the chlorotrimethylsilane modification of the acyloin condensation of biaryl diesters. The novel quinones 4a, 4b, and 12 were prepared. For the first time, enantiomers (M and P) of this class of compounds were enriched semipreparatively by liquid chromatography on optically active sorbents. The barriers to thermal ...

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Item Type:Article
Date:1992
Additional information (public):späterer Zeitschr.titel: European journal of inorganic chemistry
Institutions:Chemistry and Pharmacy > Institut für Organische Chemie > Retired Professors > Prof.Dr. Mannschreck
Identification Number:
ValueType
10.1002/cber.19921250416DOI
Keywords:9, 10-Phenanthrenequinones; Acyloin condensation; Enantiomers, liquid chromatography of; Barriers to racemization
Subjects:500 Science > 540 Chemistry & allied sciences
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Owner: Gertraud Kellers
Deposited On:15 Nov 2010 14:47
Last Modified:15 Nov 2010 14:47
Item ID:17995
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