Indium-mediated reduction of β-aminovinyl chloro-difluoromethylated ketones in the presence of heteroaryl aldehydes
作者:Fabrice Fenain、Maurice Médebielle、Mathias Rocher、Osamu Onomura、Etsuji Okada、Dai Shibata
DOI:10.1016/j.jfluchem.2007.06.001
日期:2007.10
The synthesis of new β-aminovinyl chloro-difluoromethylated ketones 1 and 2 is presented. In some of them the activation of the C–Cl bond was achieved, under mild conditions, using indium powder. The corresponding difluoro-enolates were trapped with a series of aromatic and heterocyclic aldehydes, to furnish the corresponding difluoromethylene aldol products 3 and 4, in moderate to good yields. The
介绍了新的β-氨基乙烯基氯-二氟甲基化酮1和2的合成。在某些情况下,使用铟粉可在温和的条件下实现C–Cl键的活化。相应的二氟-烯酸酯被一系列芳族和杂环醛捕获,以中等至良好的产率提供相应的二氟亚甲基羟醛产物3和4。本合成方法为制备新型二氟亚甲基官能化的烯胺酮衍生物提供了方便的方法。