Palladium-catalyzed annelation onto N,N-dialkylanilines by tetrahydrofuran. Stereospecific formation of heterotricyclic compounds via cation-radical intermediates
Reactions of chloride salts of 7-amino-9-ethylguanine and 1-amino-3-methylbenzimidazoles with lead(IV) acetate: Formation of 8-aza-9-ethylguanine and 1-methyl-1H-benzotriazoles
作者:Toyo Kaiya、Shinsuke Aoyama、Kohfuku Kohda
DOI:10.1016/s0960-894x(99)00123-7
日期:1999.4
Reaction of 7-amino-9-ethylguaninium chloride with lead(IV) acetate (LTA) in MeOH yielded 8-aza-9-ethylguanine. Similarly, the reaction of 1-amino-3-methylbenzimidazolium chloride or its substituted derivatives (6-methyl, 5,6-dimethyl and 5-nitro) with LTA gave the corresponding 1-methyl-1H-benzotriazole (or 1-methyl-2-azabenzimidazole) derivatives along with N-methylformananilide derivatives.
The oxidation of 4-substitutedN,N-dimethylanilines with molecularoxygen using a catalytic amount of iron(III) chloride efficiently proceeded in the presence of benzoyl cyanide to give the corresponding N-cyanomethyl-N-methylanilines along with N-methylformanilides.