Volume 58, Issue 8 pp. 2474-2478
Communication

Enantioselective Synthesis of 3,3′-Diaryl-SPINOLs: Rhodium-Catalyzed Asymmetric Arylation/BF3-Promoted Spirocyclization Sequence

Long Yin

Long Yin

Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198 China

These authors contributed equally to this work.

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Dr. Junhao Xing

Dr. Junhao Xing

Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198 China

These authors contributed equally to this work.

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Yuhan Wang

Yuhan Wang

Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198 China

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Yue Shen

Yue Shen

Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198 China

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Prof. Dr. Tao Lu

Corresponding Author

Prof. Dr. Tao Lu

Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198 China

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Prof. Dr. Tamio Hayashi

Corresponding Author

Prof. Dr. Tamio Hayashi

Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371 Singapore

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Prof. Dr. Xiaowei Dou

Corresponding Author

Prof. Dr. Xiaowei Dou

Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 211198 China

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First published: 02 January 2019
Citations: 62

Graphical Abstract

Going for a ′SPIN′: The enantioselective synthesis of a series of 3,3′-diarylated 1,1′-spirobiindane-7,7′-diols (3,3′-diaryl-SPINOLs) was developed using a sequential Rh-catalyzed twofold asymmetric conjugate arylation/BF3-promoted diastereoselective spirocyclization. Some phosphoramidite ligands were prepared from the 3,3′-Ph-SPINOL and applied to several catalytic asymmetric reactions, and the 3,3′-diarylated ligands showed higher enantioselectivities than the privileged nonsubstituted ligands.

Abstract

The enantioselective synthesis of a series of C2-symmetric 3,3′-diarylated 1,1′-spirobiindane-7,7′-diols (3,3′-diaryl-SPINOLs) was developed by sequential Rh-catalyzed twofold asymmetric conjugate arylation/BF3-promoted diastereoselective spirocyclization (>20:1 d.r. and >99 % ee for all examples). Some phosphoramidite ligands were prepared from the 3,3′-Ph-SPINOL and applied to several catalytic asymmetric reactions, and the 3,3′-diarylated ligands showed higher enantioselectivities than the privileged nonsubstituted ligands.

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