69918-17-8Relevant articles and documents
Stability of a columnar liquid crystalline phase in isomeric derivatives of the 1,4-dihydrobenzo[e][1,2,4]triazin-4-yl: Conformational effects in the core
Jasiński, Marcin,Kapu?ciński, Szymon,Kaszyński, Piotr
, p. 1054 - 1059 (2019)
Fluid phase behaviour of three isomeric 1,3,6-trisubstituted benzo[e][1,2,4]triazin-4-yl derivatives with the half-disc molecular architecture was examined in the pure form and in binary mixtures. Results indicate that the position of substitution with two wedge-shaped 3,4,5-tridodecyloxyphenyl groups and one Ph group has dramatic impact on the Colh phase stability, which ranges from 73 °C to presumably below ?60 °C. Analysis of electronic and steric factors suggests that the intermolecular interactions of the wedge-shaped substituents are dominant and through their conformational behaviour they affect packing of the column's core and hence phase stability.
Two-step syntheses of 3-methyl and 3-phenyl-1,2,4-benzotriazines
Khodja, Mohamed,Moulay, Saad,Boutoumi, Hocine,Wilde, Horst
, p. 166 - 172 (2007/10/03)
3-Methyl-1,2,4-benzotriazine and some of its derivatives were prepared in moderate yields (50-70%) via a reductive cyclization by a PtO 2-catalyzed hydrogenation of the corresponding 2- nitrophenylhydrazones of the pyruvic acid. The latter comp
