Open AccessConformational preference of cis ‐1‐aryl‐2‐(2‐benzo[ C ]phenanthryl)‐and cis ‐1‐aryl‐2‐(3‐phenanthryl)‐ethenes
Author(s) -
de Jong M. H.,
Laarhoven W. H.
Publication year - 1973
Publication title -
recueil des travaux chimiques des pays‐bas
Language(s) - English
Resource type - Journals
ISSN - 0165-0513
DOI - 10.1002/recl.19730920615
Subject(s) - aryl , reagent , chemistry , preference , stereochemistry , mathematics , organic chemistry , alkyl , statistics
NMR measurements under different conditions (temperature, solvents used, presence of a shift‐reagent) of cis ‐ and trans ‐1‐aryl‐2‐(2‐benzo[ c ]phenanthryl)‐ethenes reveal that an overcrowded conformation predominates in cis isomers. In the analogous 1‐aryl‐2‐(3‐phenanthryl)ethenes no clear conformational preference is found.
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