The combined use of a catalytic amount of InX3 (X = OTf and NTf2) and 1-butanol was found to be effective in formal alkyne–aldehyde metathesis. With this catalytic system, aromatic alkynes reacted with aromatic aldehydes to give chalcones in moderate to good yields. Alkynals were efficiently converted into 5- to 7-membered cyclic compounds by intramolecular alkyne–aldehyde coupling.
研究发现,InX3(X = OTf 和
NTf2)与
1-丁醇联合使用在形式
炔烃-醛交叉偶联反应中具有很好的效果。在该催化体系下,芳香
炔烃与芳香醛反应生成
查尔酮,产率中等至良好。炔醛通过分子内
炔烃-醛偶联高效转化为5至7元环状化合物。