3- -5,6-diphenyl-1,2,4-triazine

Diphenyl-1,2,4-triazin-3-yl) isoquinoline, D-01056 3-(5,6-Di-2-pyridyl-1,2,4-triazin-3-yl)isoquinoline, D-01097 3-(3-Isoquinolyl)-1,2,4-triazino[5,6-y][4,7]phenanthroline, 1-00090 1 -(4,6-Diamino-1,3,5-triazin-2-yl) isoquinoline, D-00130 3-(4,6-Diamino-1,3,5-triazin-2-yl) isoquinoline, D-00131 2-Amino-4,6-bis( 1 -isoquinolyl)-1,3,5-triazine, A-00121... 

Cyasorb UV 1084 ([2,2 -thiobis(4-r-octylphenolate)]-n-butylamine Nickel II) Bw[l-(2-hydroxy-2-methylpropoxy)-2,2,6,6-tetramethyl piperidin-4-yl] sebacate 2,4-te[2-hydroxy-4-(2-hydroxyethyloxy)-phenyl]-6-(4-chlorophenyl)-l,3,5-triazine 2-(2-Hydroxyphenyl)-4,6-diphenyl-triazine trisaryl triazines... 

Hsynthesis from, 3, 767 Indenobenzazepines pharmacological properties, 7, 546 Indenone oxide, 2,3-diphenyl-photochromic compound, 1, 385 In deno[ 1,2-c][ 1,2,4]triazines synthesis, 3, 434 Indicated hydrogen nomenclature, 1, 33 Indigo, I, 317, 318-319, 4, 370 Baeyer synthesis, 1, 319 colour and constitution, 1, 344-345 molecular structure, 4, 162 photochromic compound, 1, 386 synthesis, 4, 247 Indigoid dyes... 

H-Pyrazino[l,2-a][l,3,5]triazine, 2-amino-8-methyl-4,9-dioxo-cis-6,7-diphenyl-6,7,8,9-tetrahydro-... 

Triazine-3-thione, 5,6-diphenyl-Friedel-Crafts reaction, 3, 409 metal complexes, 3, 456... 

Pyridyl)-5,6-diphenyl-l,2,4-triazine-p,p -disulfonic acid, monosodium salt (H2O)... 

Chloro-5,6-diphenyl-as-triazine readily undergoes methoxy-de-chlorination at 25° (< 12 hr) with methanolic methoxide and at 65° (4.5 hr) in non-basified methanol. The chloro group is also displaced by hydrazine (80°, 1 hr), ammonia (140°, 6 hr), and phenyl-magnesium bromide (70°, 12 hr), the latter forming the triphenyl compound 315.3-Chloro-6-phenyl-as-triazine is unstable to cold water or alkali and to hot alcohol or aqueous potassium carbonate. ... 

Methylthio and 3-carboxymethylthio substituents are easily hydrolyzed, the latter much more readily (cf. 136 and 237) but only in acid. A 3-sulfonic acid group (cf. 314) is readily displaced, especially in acid solution. Conversion of 3-amino-5,6-diphenyl-as-triazine into the 3-oxo analog with alkali proceeds rather easily (100°, < 4 hr), as it does with other amino-azines. 

Because of the ease of ring synthesis, symmetrically trisubstituted s-triazines have been more thoroughly studied, but a few nucleophilic substitutions of derivatives bearing a single leaving group are known. 2-Chloro-4,6-diphenyl- and 2-chloro-4,6-dimethyl-s-triazines (318) undergo facile nucleophilic displacements with ammonia, amines, and hydrazine, with alkoxide, or with hydrosulfide... 

The reaction of 3,6-diphenyl-1,2,4-triazine 4-oxide 58 with benzoylacetone under basic conditions affords substituted 1,2,4-triazine 74 in low yield (96MC116). 

Diphenyl-1,2,4-triazine 4-oxide 139 was obtained by reaction of diphenyl-glyoxal mono-2-ethoxymethylenehydrazone 140 with hydroxylamine. The reaction proceeds via formation of an isonitroso intermediate, followed by cyclization to the 1,2,4-triazine 4-oxide 139 (71LA12). 

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