reported. In this reaction, tautomeric equilibria of β-enaminones are utilized to generate imine partners in situ. A hypothesized sequential Mannich addition/cyclization of imine tautomers and isocyanoacetates followed by an unprecedented ring-opening of the resultant 2-imidazolines and dehydration–condensation deliver the final 1,2,4,5-tetrasubstituted pyrrole products.
                                    报道了出乎意料的
银催化的β-烯胺酮和
异氰基乙酸酯的级联反应,提供了官能化的
吡咯衍
生物。在该反应中,利用β-烯胺酮的互变异构平衡原位产生
亚胺配体。假设
亚胺互变异构体和
异氰基乙酸酯的顺序Mannich加成/环化反应,然后空前的所得
2-咪唑啉开环和脱
水缩合反应生成最终的1,2,4,5-四取代
吡咯产物。