tosylamides derivatives with (hetero)aryl iodides in the presence of Pd2dba3 and triphenylphosphine affords N-aryl and N-alkyl arylynamides in yields of up to 90%. Intramolecular [4+2] cycloaddition reactions of N-ethynylphenyl ynamides and arylynamides allow the synthesis of carbazoles and benzannulated and heteroannulated carbazoles in moderate-to-good yields.
N,N'-芳基-和N,N'-烷基-buta -1,3-diyne-1,4-ditosylamides的第一次合成是通过
铜催化相应的二聚反应,收率非常好。N-芳基或N-烷基
甲苯磺酰基
酰胺。在Pd 2 dba 3和
三苯基膦的存在下,N-
乙炔基
锌甲苯磺
酰胺衍
生物与(杂)芳基
碘化物的Negishi偶联,以高达90%的产率提供N-芳基和N-烷基芳基炔基
酰胺。N的分子内[4 + 2]环加成反应-
乙炔基
苯基炔基
酰胺和芳基炔基
酰胺可以中等至良好的产率合成
咔唑,
苯并环化和杂环化的
咔唑。