success of the desulfitative Sonogashira cross-coupling reaction of thioamide-type pyridine derivatives and alkynes. Corresponding alkynylated products were obtained with moderate to excellent yields. Thanks to this reaction, furo[3,2-b]pyridine and 1H-pyrrolo[3,2-b]pyridine derivatives were synthesized through a one-pot cross-coupling reaction/heteroannulation sequence.
事实证明,邻位螯合辅助对于硫酰胺型吡啶衍生物和炔烃的脱硫Sonogashira交叉偶联反应的成功至关重要。以中等至优异的产率获得了相应的炔基化产物。由于该反应,通过一锅交叉偶联反应/杂环化序列合成了呋喃[3,2- b ]吡啶和1 H-吡咯并[3,2- b ]吡啶衍生物。