Polyphenylalkyne derivatives Q 0750Synthesis of New C2-Symmetric Bis(β-hydroxy amide) Ligands and Their Applications in the Enantioselective Addition of Alkynylzinc to Aldehydes. -A number of title ligands such as (I) is prepared. Among them, the derivative (Ia) provides the best results. -(HUI*, X.-P.; YIN, C.; CHEN
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