Catalytic Asymmetric Conjugate Addition of Grignard Reagents to a,b-Unsaturated Sulfones.

[摘要]：A highly efficient method is reported for the asym. conjugate addn. of Grignard reagents to a,b-unsatd. 2-pyridylsulfones. Using a Cu/TolBinap complex, excellent enantioselectivities and high yields are obtained for a wide variety of aliph. substrates.

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