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Development of Axially Chiral Cyclo-Biaryldiol Ligands with Adjustable Dihedral Angles

机译:二面角可调的轴向手性环-联芳基二醇配体的开发

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摘要

A new type of axially chiral cyclo-[1,1-biphenyl]-2,2-diol (CYCNOL) ligands with adjustable dihedral angles have been developed by varying the bridge chain length. Eight-, nine- and ten-membered cyclo-ligands were prepared and evaluated by using two representative examples: enantioselective additions of diethylzinc to aldehydes and organometallic reagents to enones. The results revealed that the fine regulation of dihedral angles through variation of the bridge chain length was effective in the asymmetric synthesis.
机译:通过改变桥链长度,开发了一种新型的具有可调节二面角的轴向手性环-[1,1-联苯] -2,2-二醇(CYCNOL)配体。通过两个代表性的例子,制备并评估了八元,九元和十元环配体:将二乙基锌对醛选择性对映选择性添加,将有机金属试剂对烯酮选择性添加。结果表明,通过改变桥链长度对二面角的精细调节在不对称合成中是有效的。

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