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New biphenol-based, fine-tunable monodentate phosphoramidite ligands for catalytic asymmetric transformations.

ABSTRACT: Monodentate phosphoramidite ligands have been developed based on enantiopure 6,6'-dimethylbiphenols with axial chirality. These chiral ligands are easy to prepare and flexible for modifications. The fine-tuning capability of these ligands plays a significant role in achieving high enantioselectivity in the asymmetric hydroformylation of allyl cyanide and the conjugate addition of diethylzinc to cycloalkenones.

SUBMITTER: Hua Z 

PROVIDER: S-EPMC397395 | biostudies-literature | 2004 Apr

REPOSITORIES: biostudies-literature

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New biphenol-based, fine-tunable monodentate phosphoramidite ligands for catalytic asymmetric transformations.

Hua Zihao Z   Vassar Victor C VC   Choi Hojae H   Ojima Iwao I  

Proceedings of the National Academy of Sciences of the United States of America 20040312 15

Monodentate phosphoramidite ligands have been developed based on enantiopure 6,6'-dimethylbiphenols with axial chirality. These chiral ligands are easy to prepare and flexible for modifications. The fine-tuning capability of these ligands plays a significant role in achieving high enantioselectivity in the asymmetric hydroformylation of allyl cyanide and the conjugate addition of diethylzinc to cycloalkenones. ...[more]

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