Synthesis, mesomorphic behaviour and optical anisotropy of some novel materials for nematic mixtures of high birefringenceElectronic supplementary information (ESI) available: experimental procedures for all compounds not already given in this paper. See http://www.rsc.org/suppdata/jm/b4/b400630e/
Synthesis, mesomorphic behaviour and optical anisotropy of some novel materials for nematic mixtures of high birefringenceElectronic supplementary information (ESI) available: experimental procedures for all compounds not already given in this paper. See http://www.rsc.org/suppdata/jm/b4/b400630e/
Novel and Unexpected Deamination during the Palladium-Catalysed Cross-Coupling of Haloanilines and Arylboronic Acids
作者:Michael Hird、Alexander J. Seed、Kenneth J. Toyne
DOI:10.1055/s-1999-2638
日期:1999.4
Palladium-catalysed cross-coupling reactions involving haloanilines and arylboronic acids produce the expected biaryl products, but additionally a substantial quantity of the corresponding deaminated biaryl is also generated which constitutes a novel synthetic methodology.
Synthesis, mesomorphic behaviour and optical anisotropy of some novel materials for nematic mixtures of high birefringenceElectronic supplementary information (ESI) available: experimental procedures for all compounds not already given in this paper. See http://www.rsc.org/suppdata/jm/b4/b400630e/
作者:Michael Hird、Kenneth J. Toyne、John W. Goodby、George W. Gray、Victoria Minter、Rachel P. Tuffin、Damien G. McDonnell
DOI:10.1039/b400630e
日期:——
Structural moieties including core units (such as phenyl, naphthyl and thiophenyl), linking groups (such as ethynyl), terminal substituents (such as cyano, isothiocyanato and fluoro), and lateral fluoro substituents have been incorporated into novel materials designed to confer a high birefringence on nematic mixtures. The materials have all been prepared through convergent syntheses involving palladium-catalysed cross-coupling reactions of arylboronic acids. The materials were examined for their mesomorphic behaviour as neat materials and as mixtures; some materials were found to have extremely high nematic phase stability, and others were non-mesogenic. The materials were evaluated in nematic host mixtures for their optical anisotropy, and they were all found to show promisingly high values.