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- W2035590717 abstract "The ORD and CD curves of (S)-1,7-diphenyl-5-hydroxy-3-heptanone, (S)-1,7-bis(3,4-dimethoxyphenyl)-5-hydroxy-3-heptanone, and the related model compounds were obtained in selected solvents with different polarity. Causing the 1,7-diaryl-5-hydroxy-3-heptanones dextro-rotatory in chloroform was attributed to the formation of the intramolecular hydrogen bond between the C-3 carbonyl and C-5 hydroxyl groups, regardless of the presence of the phenyl groups. On the other hand, causing the compounds levo-rotatory in methanol was proved to necessitate simultaneously the breaking of the intramolecular hydrogen bond followed by solvation to the carbonyl and/or hydroxyl groups, as well as the presence of the phenyl groups. The ca. 30% of the solvent effect on the optical rotation was based on the change in the rotational strength associated with the n→π∗ transition of the carbonyl group as changing a solvent. The residual 70% was based on the change in the rotational strength associated with the electronic transition..." @default.
- W2035590717 created "2016-06-24" @default.
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- W2035590717 date "1986-04-01" @default.
- W2035590717 modified "2023-10-12" @default.
- W2035590717 title "The Solvent Effects on the Optical Rotatory Properties of 1,7-Diaryl-5-hydroxy-3-heptanones and Related Compounds" @default.
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- W2035590717 doi "https://doi.org/10.1246/bcsj.59.1181" @default.
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