Z-isomers of azobenzenes highly compatible with liquid crystals

Chemistry Letters

Volumn , Issue 8, 1998, Pages 789-790

  Ruslim, Christian ^a   Ichimura, Kunihiro ^a  

^a TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0032327934     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.1998.789     Document Type: Article

References (10)

1. K. Ichimura, in "Photochromism: Molecules and Systems", ed by H. Dürr and H. Bouas-Laurent, Elsevier. Amsterdam (1990), Chap. 26, p. 903.
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4. G. Heppke, H. Marschall, P. Nurnberg, F. Oestreicher, and G. Scherowsky, Chem. Ber., 114, 2501 (1981).
5. S. Tazuke, T. Ikeda, and E. Kurihara, Chem. Lett., 1987, 911.
6. T. Sasaki, T. Ikeda, and K. Ichimura, J. Am. Chem. Soc., 116, 625 (1994).
7. D. S. Hermann, P. Rudquist, K. Ichimura, K. Kudo, L. Komitov, and S. T. Lagerwall, Phys. Rev. E, 55, 2857 (1997).
8. Stable conformation and heat of formation of both isomers were calculated by using the Molecular Mechanics calculation with the MM2 parameter and the Molecular Orbital calculation with the semi-empirical MOPAC PM3 parameter, successively, which are packed in the CAChe (Computer Aided Chemistry) version 3.0.
9. 4 of m-nitrophenol or 2-methyl-3-nitrophenol which were protected by 3,4-dihydro-2H-pyrane gave the corresponding 3,3′-dihydroxyazobenzene in a 19% or 32% overall yield.
10. 4; C, 70.21; H. 7.38; N. 6.82%.