Chiral-at-Metal Rh(III) Complex-Catalyzed Decarboxylative Michael Addition of β-Keto Acids with α,β-Unsaturated 2-Acyl Imidazoles or Pyridine
作者:Shi-Wu Li、Jun Gong、Qiang Kang
DOI:10.1021/acs.orglett.7b00220
日期:2017.3.17
chiral-at-metal Rh(III) complex-catalyzed, highly efficient enantioselective decarboxylative Michael addition of β-keto acids with α,β-unsaturated 2-acyl imidazoles or pyridine has been developed, affording the corresponding adducts in 94–98% yield with up to 96% enantioselectivity. This protocol exhibits remarkable reactivity, as the complex with a Rh(III) loading as low as 0.05 mol % can catalyze the decarboxylative
一种新制备的手性金属Rh(III)络合物催化的β-酮酸与α,β-不饱和2-酰基咪唑或吡啶的高效对映选择性脱羧迈克尔加成反应,在94- 98%的产率和高达96%的对映选择性。该方案显示出显着的反应活性,因为具有低至0.05 mol%的Rh(III)负载的络合物可以以克为单位催化脱羧Michael加成,而不会损失对映选择性。