starting from activated methylene isocyanides and 1,5-dielectrophilic 5-oxohepta-2,6-dienoates (and their equivalents) through a [5+1] annulation-isocyanide cyclization cascade under basic conditions has been developed. This strategy allows the synthesis of polysubstituted dihydroindolones and tetrahydroindolones in high to excellent yields under extremely mild conditions in a single step.
在碱性条件下,通过[5 + 1]环化-异
氰化物环化级联反应,从活化的亚甲基异
氰化物和1,5-二亲电子的5-氧杂庚基2,6-二烯酸酯(及其等价物)开始快速构建官能化还原
吲哚的新策略条件已经发展。该策略允许在极其温和的条件下,一步就可以以高产率至优异的产率合成多取代的二氢
吲哚酮和四氢
吲哚酮。