Synthesis and structure of optically active 1,12-diethyl-and 1,12-diisopropylbenzo[c]phenanthrenes: An isopropyl group can be smaller than a methyl group

DOI: 10.1246/cl.2007.72

Source and publish data:

Chemistry Letters p. 72 - 73 (2007)

Update date:2022-08-03

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Authors:

Sugiura, Hiroki

Sakai, Daisuke

Otani, Harunori

Teranishi, Kazuhiro

Takahira, Yusuke

Amemiya, Ryo

Yamaguchi, Masahiko

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Article abstract of DOI:10.1246/cl.2007.72

1,12-Diethyl- and 1,12-diisopropylbenzo[c]phenanthrene-5,8-dicarboxylic acids were synthesized, and resolved. The dihedral angles formed by the A and D rings increased in the order of diisopropyl < diethyl < dimethyl as indicated by X-ray analysis, which showed that the strain decreased with the increase of the bulkiness at the 1,12-groups. Copyright

Full text of DOI:10.1246/cl.2007.72

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