N-Acylbenzotriazoles, when treated with samarium diiodide in THF, undergo self-coupling reaction to afford 1,2-diketones in good to excellent yields; while when treated with samarium diiodide in CH3CN, they undergo ring-opening reaction to afford 1-acylamido-2-alkyl (or aryl) benzimidazoles in reasonable to good yields. A plausible mechanism was suggested.
N-酰基苯并三唑在THF中用二
碘化sa处理时,会发生自偶联反应,从而以良好或极好的收率得到1,2-二酮;当在CH 3 CN中用二
碘化sa处理时,它们会发生开环反应,以合理至良好的收率获得1-酰
氨基-2-烷基(或芳基)
苯并咪唑。提出了一个合理的机制。