A stereoregular polyphenylacetylene derivative bearing an amino group as a probe for chirality assignments of acids by circular dichroism

Chemistry Letters

Volumn , Issue 11, 1996, Pages 955-956

  Yashima, Eiji ^a   Maeda, Yukio ^a   Okamoto, Yoshio ^a  

^a NAGOYA UNIVERSITY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0030376289     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.1996.955     Document Type: Article

References (19)

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9. 21N: C, 83.67; H, 9.83; N, 6.50%.
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14. n: C, 83.67; H, 9.83; N, 6.50%.
15. 8 in the ICDs. However, the assignments of the Cotton effects have not yet been made.
16. N. Harada and K. Nakanishi, in "Circular Dichroic Spictroscopy - Exciton Coupling in Organic Stereochemistry," University Science Book, Mill Valley, CA, 1983.
17. -1) and λ (nm)) of the second Cotton for the complexes with (S)-3, (S)-4, and (S)-5 in THF in a 0.5 mm cell were -4.6 (371), -2.1 (368), and -2.6 (372), respectively; [poly-1]= 1.0 mg / ml, [acid] / [poly-1]=100 for (S)-3 and 150 for (S)-4 and (S)-5.
18. -1) and λ (nm)) of the second Cotton for the complexes with (S)-6, (S)-7, and (S)-8 in acetonitrile in a 0.5 mm cell were 13.3 (370), 12.0 (370), ami 0.7 (372), respectively; [poly-1]= 1.0 mg / ml, [acid] / [poly-1]=50. For solvent effects in acid-base equilibria, see: C. Reichardt, in "Solvents and Solvent Effects in Organic Chemistry," VCH, Weinheim (1990), Chaps. 3 and 4, p. 51: K. Izutsu, in "Acid-Base Dissociation Constants in Dipolar Aprotic Solvents," Blackwell, Oxford (1990).
19. -1) and λ (nm)) of the second Cotton for the complexes with (S)-6, (S)-7, and (S)-8 in acetonitrile in a 0.5 mm cell were 13.3 (370), 12.0 (370), ami 0.7 (372), respectively; [poly-1]= 1.0 mg / ml, [acid] / [poly-1]=50. For solvent effects in acid-base equilibria, see: C. Reichardt, in "Solvents and Solvent Effects in Organic Chemistry," VCH, Weinheim (1990), Chaps. 3 and 4, p. 51: K. Izutsu, in "Acid-Base Dissociation Constants in Dipolar Aprotic Solvents," Blackwell, Oxford (1990).