Synthesis of Imidazole N-Oxides in Solvent-free Conditions
作者:Antonio de la Hoz、Jesús Alcázar、Mikael Begtrup
DOI:10.3987/com-96-7461
日期:——
Selective Synthesis of 2-, 4-, and 5-Cyano Substituted Imidazoles from Imidazole <i>N</i>-Oxides and Trimethylsilyl Cyanide
作者:Jesús Alcázar、Mikael Begtrup、Antonio de la Hoz
DOI:10.1021/jo960991s
日期:1996.1.1
1-Substituted 2-, 4-, and 5-cyanoimidazoles were produced by reaction of 3-cyclohexyl or 3-p-tolylimidazole 1-oxide and trimethylsilyl cyanide in the presence of triethylamine. The product composition depended on reaction temperature and solvent polarity. By proper choice of these parameters each isomer could be obtained selectively in reasonable yield.