Abstract
The copper-catalysed enantioselective 1,4-addition reactions of diethylzinc to cyclohexenone and trimethylaluminium to E-non-3-en-2-one in the presence of thioether-alcohol ligands, which are easily prepared from d-(+)-xylose, resulted in e.e.s of up to 62% for cyclohexenone and 34% for E-non-3-en-2-one.
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