The mechanistic rationale involving activation of nitroalkanes towards interaction with nucleophilic reagents in the presence of polyphosphoric acid (PPA) was re-evaluated. Could nitrile oxide moieties be formed during this process? This experiment demonstrates that at least in some cases this could happen, as generated nitrile oxides were successfully intercepted as adducts of [3 + 2] cycloadditions
重新评估了在多
磷酸 (
PPA) 存在下激活硝基烷与亲核试剂相互作用的机理原理。在这个过程中会形成氧化腈部分吗?该实验表明,至少在某些情况下,这可能会发生,因为生成的腈氧化物被成功拦截为 [3 + 2] 环加成的加合物。