Acid-promoted rapid solvent-free access to substituted 1,4-dihydropyridines from β-ketothioamides
作者:Ming Li、Ke-Na Sun、Li-Rong Wen
DOI:10.1039/c5ra26931h
日期:——
β-Ketothioamides (KTAs) have been used as building blocks with aldehydes and β-enaminonitriles for synthesis of 1,4-dihydropyridines in the presence of AcOH under solvent-free conditions within 5 min. This new strategy exhibits remarkable features such as high chemoselectivity, mild reaction conditions, easily available substrates, and good yields.
β-酮硫酰胺(KTA)已用作醛和β-烯腈的结构单元,用于在无溶剂条件下于5分钟内在AcOH存在下合成1,4-二氢吡啶。这种新策略具有非凡的功能,例如高的化学选择性,温和的反应条件,易于获得的底物和良好的收率。