Synthesis and mesomorphic properties of some disubstituted unsymmetrical phenyl-1,2,4,5-tetrazines

References

• Heilmeier , G. H. , Castellano , J. A. and Zanoni , L. A. 1969 . Molec. Crystals liq. Crystals , 8 : 293
   Web of Science ®Google Scholar
• White , D. L. and Taylor , G. N. 1974 . J. appl. Phys. , 45 : 4718
   Web of Science ®Google Scholar
• Ivashchenko , A. V. and Rumyantsev , V. G. 1987 . Molec. Crystals liq. Crystals A , 150 : 1
   Web of Science ®Google Scholar
• Zollinger , H. 1991 . Colour Chemistry, , 2nd edition , Weinheim : VCH .
   Google Scholar
• Schadt , M. 1979 . J. chem. Phys. , 71 : 2336
   Web of Science ®Google Scholar
• Isenberg , A. , Krücke , B. , Pelzl , G. , Zaschke , H. and Demus , D. 1983 . Cryst. Res. Technol. , 18 : 1059
   Web of Science ®Google Scholar
• Demus , D. , Krücke , B. , Kuschel , F. , Nothnick , H. U. , Pelzl , G. and Zaschke , H. 1979 . Molec. Crystals liq. Crystals , 56 : 115
   Web of Science ®Google Scholar
• Pinner , A. 1893 . Ber. , 26 : 2126
   Google Scholar
• Pinner , A. 1894 . Ber. , 27 : 984
   Google Scholar
• Erickson , J. G. , Wiley , P. E. and Wystrach , V. P. 1956 . The 1,2,3- and 1,2,4-Triazines, Tetrazines, and Pentazines , New York : Interscience .
   Google Scholar
• Grakauskas , V. A. , Tomasewski , A. J. and Horwitz , J. P. 1958 . J. Am. chem. Soc. , 80 : 3155 For alternate methods for the formation of unsymmetrical tetrazines see
   Google Scholar
• Bowie , R. A. , Gardner , M. D. , Neilson , D. G. , Watson , K. M. , Mahmood , S. and Ridd , V. 1972 . J. chem. Soc., Perkin Trans. , I : 2395
   Google Scholar
• Lang , S. A. , Johnson , B. D. and Cohen , E. 1975 . J. Heterocycl. Chem. , 12 : 1143
   Web of Science ®Google Scholar
• Mangia , A. , Bortesi , F. and Amendola , U. 1977 . J. Heterocycl. Chem. , 14 : 587
   Web of Science ®Google Scholar
• Werbel , L. M. , McNamara , D. J. , Colbry , N. L. , Johnson , J. L. , Degnan , M. J. and Whitney , B. 1979 . J. Heterocycl. Chem. , 16 : 881
   Web of Science ®Google Scholar
• Fields , S. C. , Parker , M. H. and Erickson , W. R. 1994 . J. org. Chem. , 59 : 8284
   Google Scholar
• Dox , A. W. 1932 . Organic Syntheses , Vol. 1 , 5 New York : Wiley . Coll.
   Google Scholar
• Gray , G. W. and Mosley , A. 1978 . Molec. Crystals liq. crystals , 28 : 233
   Google Scholar
• Dalton , J. R. and Regen , S. L. 1979 . J. org. Chem. , 44 : 4443
   Web of Science ®Google Scholar
• Sekiya , A. and Ishikawa , N. 1975 . Chem. Lett. , : 277
   Google Scholar
• Gryszkiewicz-Trochimowski , E. and Bousquet , M. 1961 . Compt. Rend. , 253 : 2992 (a) M. Schadt has synthesized tricyclic systems of the type by dehydration of an oxime. Personal communication. (b) For synthesis of symmetrically substituted 3,6-dicyano-1,2,4,5-tetrazine by dehydration of an amide see
   Google Scholar
• Ma , Z. and Bobbitt , J. M. 1991 . J. org. Chem. , 56 : 6110
   Web of Science ®Google Scholar
• Synthesis of compound 9 requires the formation of the diazonium salt of amino tetrazole which has been reported to detonate. See [8f]. On one occasion, we also had a cold 0.3 M solution of this diazonium salt detonate. Subsequent reactions were run without further incident using a 0.1 M solution of this diazonium salt
   Google Scholar
• Rao , C. N. R. 1991 . Chemical Applications of Infrared Spectroscopy , 268 New York : Academic Press .
   Google Scholar
• Reference [3] reports an order parameter for However we, were unable to find any published synthesis of this material
   Google Scholar
• Yamanaka , H. and Ohba , S. 1990 . Heterocycles , 31 : 895
   Google Scholar
• Demus , D. and Zaschke , H. 1984 . Flüssige Kristalle in Tabellen II , Leipzig : VEB Deutscher Verlag für Grundstoffindustrie .
   Google Scholar
• Pavlyuchenko , A. I. , Smirnova , N. I. , Mikhailova , T. A. , Kovshev , E. I. and Trrov , V. V. 1986 . Zh. org. Khim. , 22 : 1061
   Google Scholar
• Boller , A. , Cereghetti , M. and Schadt , M. 1977 . Molec. Crystals liq. Crystals , 42 : 215
   Web of Science ®Google Scholar
• Matsumoto , M. , Sano , Y. , Nagaishi , T. , Yoshinaga , S. , Somura , K. I. and Taniguchi , H. 1992 . Chem. Express , 1 : 857
   Google Scholar
• Gleiter , R. , Schehlmann , V. , Spanget-Larsen , J. , Fischer , H. and Neugebauer , F. A. 1988 . J. org. Chem. , 53 : 5756
   Google Scholar
• Wu , S. T. and Wu , C. S. 1989 . J. appl. Phys. , 66 : 5297
   Web of Science ®Google Scholar
• ZLI-2359 is a commercially available (EM Merck) nematic LC mixture with a low birefringence and positive dielectric anisotropy
   Google Scholar
• BDH-E7 is a commercially available (EM Merck) nematic LC mixture of alkyl and alkoxy cyanobiphenyls and alkyl cyanoterphenyls
   Google Scholar
• Rogana , E. , Nelson , D. L. and Mares-Guia , M. 1975 . J. Am. chem. Soc. , 97 : 6844
   PubMed Web of Science ®Google Scholar
• Schubert , H. U.S. Patent 4 358 589 . 1982 .
   Google Scholar