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N-Tosylaza[2.2]metacyclophan — Darstellung, Struktur, Helicität, Chiroptik, Racemisierung

Vögtle, Fritz, Przybilla, Klaus-Jürgen, Mannschreck, Albrecht, Pustet, Nikola, Büllesbach, P., Reuter, Hans and Puff, Heinrich (1988) N-Tosylaza[2.2]metacyclophan — Darstellung, Struktur, Helicität, Chiroptik, Racemisierung. Chemische Berichte 121 (5), pp. 823-828.

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Abstract

Synthesis, structure, helicity, and chiroptical properties of the ten-membered helical N-tosylaza[2.2]metacyclophane 7a are described for the first time. 7a exist in a strained anti conformation, the inner (Hi-) protons of which absorb at high field (4.13, 4.34 ppm). The enantiomers of 7a were enriched by low-pressure chromatography on triacetylcellulose (TAC). Specific rotations, barrier of racemization, and circular dichrograms are discussed with respect to comparison compounds.


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Item type:Article
Date:1988
Additional Information (public):späterer Zeitschr.titel: European journal of inorganic chemistry
Institutions:Chemistry and Pharmacy > Institut für Organische Chemie > Alumni or Retired Professors > Prof.Dr. Mannschreck
Identification Number:
ValueType
10.1002/cber.19881210503DOI
Dewey Decimal Classification:500 Science > 540 Chemistry & allied sciences
Status:Published
Refereed:Unknown
Created at the University of Regensburg:Unknown
Item ID:17993
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