- Photochemical study of tris(benzotriazol-1-yl)methane
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(Chemical Equation Presented) Photodecomposition of tris(benzotrizol-1-yl) methane (1) in benzene gives [1-benzotryazol-1-yl-methylidene]-biphenyl-2- ylamine (2) resulting from the loss of the benzotriazolyl radical and nitrogen followed by addition of benzene. Elimination of the second benzotriazolyl radical from 2 provides the biphenyl-2-ylmethyleneamine radical, which affords phenantridine (3) after ring closure. In contrast, the photolysis of 1 in methanol gives a high yield of benzotriazole (4).
- Androsov, Dmitry A.,Neckers, Douglas C.
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p. 1148 - 1152
(2007/10/03)
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- para-Formylation of nitroarenes via vicarious nucleophilic substitution of hydrogen with tris(benzotriazol-1-yl)methane
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Reaction of nitroarenes 1 with tris(benzotriazol-1-yl)methyl 2 anion afforded para-bis(benzotriazol-1-yl)methylated products 3 which, upon treatment with zinc bromide and hydrochloric acid, yielded the corresponding p-nitroarylaldehydes 4 in good yields.
- Katritzky, Alan R.,Xie, Linghong
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p. 347 - 350
(2007/10/02)
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- Tris(benzotriazol-1-yl)methane: A -CO2H Synthon for the Preparation of Carboxylic Acids
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Lithiation of tris(benzotriazol-1-yl)methane 16 gives the tris(benzotriazolyl)methyl carbanion 17 which affords substitution products 18 with many electrophiles.Acidic hydrolysis of 18 affords the corresponding carboxylic acids 19 in good yield.The syntheses of several α-functionalized carboxylic acids are described.
- Katritzky, Alan R.,Yang, Zhijun,Lam, Jamshed N.
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p. 666 - 669
(2007/10/02)
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- N-POLYAZOLYLMETHANES. IV. REACTION OF BENZOTRIAZOLE WITH METHYLENE CHLORIDE AND CHLOROFORM UNDER PHASE TRANSFER CONDITIONS
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Six out of seven possible products obtained from benzotriazole and methylene chloride or chloroform have been isolated and characterized.An intermediate, 2-dichloromethylbenzotriazole, has been isolated for the first time.The relative amounts of the different isomers follow an (a+b)n relationship (n = 2 or 3).Proton and carbon-13 nmr spectroscopy and mass spectrometry have been used to identify the N,N'-bis-and N,N',N''-trisbenzotriazole derivatives.
- Avila, Luis,Elguero, Jose,Julia, Sebastian,Mazo, Jose M. del
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p. 1787 - 1792
(2007/10/02)
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