Nano-NiO catalyzed acylation of mixed (methyl)(aryl)zincs with aromatic acyl halides in THF at room temperature provides a new facile route for aryl-aroyl coupling. Among NiCl$_2}$.L$_2}$ and NiCl$_2}$.L (L = monodentate and bidentate phosphine ligand) catalysts, the lower catalyst loading of NiCl$_2}$ (dppf) may seem attractive; however, nano-NiO, being the lowest cost catalyst, is more favorable for aroylation of (methyl)(aryl)zincs. This procedure also provides a supplement to Cu and Pd catalyzed acylation of diorganozincs.
室温下,在THF中,纳米NiO催化混合(
甲基)(芳基)
锌与芳香酰基卤的酰化反应,为芳基-酰基偶联提供了新的简便方法。在NiCl$_2}$.L$_2}$和NiCl$_2}$.L(L为单齿和双齿
膦配体)
催化剂中,NiCl$_2}$(dppf)的较低
催化剂负载量可能具有吸引力;然而,纳米NiO作为成本最低的
催化剂,更适用于(
甲基)(芳基)
锌的酰化反应。该方法也为
铜和
钯催化的二烷基
锌酰化反应提供了补充。