作者:A. J. Boulton、Purabi Devi、Neil Henderson、Adil A. Jarrar、Mikl�s Kiss
DOI:10.1039/p19890000543
日期:——
3-Substituted 1,2,3-benzotriazin-4(3H)-one 1-oxides are formed on peracid oxidation of 3-alkyl- and 3-methoxy-1,2,3-benzotriazin-4(3H)-ones. The 3-(α-alkoxyalkyl) 1-oxide derivatives could be dealkylated to the tautomeric 3-unsubstituted compound. The acidities of the isomeric N-oxides of the 1,2,3-benzotriazinone system are compared. Phenyl iodosodiacetate converts o-nitrobenzaldehyde benzyl- and
The reaction of 1,2,3-benzotriazines with Grignard reagents
作者:James J. A. Campbell、Stephen J. Noyce、Richard C. Storr
DOI:10.1039/c39830001344
日期:——
Attack of alkyl Grignardreagents on 4-substituted 1,2,3-benzotriazines occurs at N-2; ethylmagnesium iodide attacks at N-2 of 3-methyl-1,2,3-benzotriazin-4(3H)-one whereas methylmagnesium iodide adds at C-4 to give, after dehydration, 3,4-dihydro-4-methylene-3-methyl-1,2,3-benzotriazine.
Cycladdition of 1,2,3-benzotriazines to diphenylcyclopropenone
作者:David E. Davies、David L. R. Reeves、Richard C. Storr、Charles W. Rees、David J. Williams
DOI:10.1039/c39800000808
日期:——
With diphenylcyclopropenone, 1,2,3-benzotriazines give cycloadducts (3), (4), and (5); this last product requires rearrangement of a [2 + 3] cycloadduct resulting from addition of the triazine to the 2,3-bond of diphenylcyclopropenone, and conversion of the triazine into a diazine.