3-Methyl-5-phenyl-tetrazole 1 -oxide

Substances 557 derived from structure 554 (Scheme 168) have been described (Scheme 169). The structure of 3-methyl-5-phenyl-tetrazole 1-oxide monohydrate 557 (R=Ph, Aik=Me, H20) has been determined by X-ray crystallography (1993PJC1767). H NMR, C NMR, and MS data are also available (1993PJC1767). 

Acid hydrolysis of 3-methyl-6-phenyl-l,2,4-triazine 4-oxide (827) yields 4-phenyl-1,2,3-triazole through an acyclic intermediate (828) (Scheme 168) <89AHC(46)73>. 1,2,4-Triazine 2-oxides (829) undergo rearrangement in basic conditions (Equation (80)) to form 4-substituted 2//-1,2,3-triazoles <89AHC(46)73>. l-(2-Nitrophenyl)-5-aryltetrazoles (830) and l-aryl-5-(2-nitrophenyl)tetrazoles are converted into 2-arylbenzotriazoles (831) by refluxing in nitrobenzene (Equation (81)) <81AJC69l>. 

X-ray crystal structures, 5, 796 Tetrazole, 5-bromo-l-methyl-reactions, 5, 105, 806 Tetrazole, 5-chloro-solubility, 5, 803 Tetrazole, 5-cyano-2-phenyl-reactions, 5, 820 Tetrazole, 5-cyanovinyl-as propellants, 5, 837 Tetrazole, 1,5-dialkyl-analeptic activity, 5, 834 Tetrazole, 5-dialkylamino-benzylation, 5, 793, 818 Tetrazole, 1,3-diaryl-5-oxide... 

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