Divergent Stereochemistry of Photocyclization from Singlet and Triplet States of 2-Vinylbiphenyls. X-Ray Crystal Structure of cis-9-Phenyl-10-methyl-9,10-dihydrophenanthrene

DOI: 10.1039/c39800000740

Source and publish data:

Journal of the Chemical Society. Chemical communications p. 740 - 742 (1980)

Update date:2022-08-25

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Authors:

Lapouyade, Rene

Koussini, Rafik

Nourmamode, Aziz

Courseille, Christian

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Article abstract of DOI:10.1039/c39800000740

The singlet cyclization of Z(or E)-1-biphenyl-2-yl-1-phenylpropene proceeds stereoselectively to cis (or trans)-9-phenyl-10-methyl-9,10-dihydrophenanthrene (the cis-isomer has been characterized by X-ray crystallopgraphy) while the triplet cyclization gives a / ratio of 9:1 whatever the starting isomer.

Full text of DOI:10.1039/c39800000740

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