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Gao X, Wu B, Huang WX, Chen MW, Zhou YG. Enantioselective Palladium-Catalyzed CH Functionalization of Indoles Using an Axially Chiral 2,2′-Bipyridine Ligand. Angew Chem Int Ed Engl 2015; 54:11956-60. [DOI: 10.1002/anie.201504483] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/24/2015] [Indexed: 11/08/2022]
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Gao X, Wu B, Huang WX, Chen MW, Zhou YG. Enantioselective Palladium-Catalyzed CH Functionalization of Indoles Using an Axially Chiral 2,2′-Bipyridine Ligand. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504483] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Takaishi K, Suzuki J, Yabe T, Asano H, Nishikawa M, Hashizume D, Muranaka A, Uchiyama M, Yokoyama A. Conformational and Optical Characteristics of Unidirectionally Twisted Binaphthyl-Bipyridyl Cyclic Dyads. Org Lett 2015; 17:4098-101. [PMID: 26263248 DOI: 10.1021/acs.orglett.5b02041] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An axially chiral binaphthyl-bipyridyl cyclic dyad in which the two units are connected by short -CH2O- linkers was synthesized. Experimental and theoretical analyses indicate that the (R)-binaphthyl unit in the dyad induces (R)-chirality in the bipyridyl unit, both in the solid state and in solution. It is shown that vibrational circular dichroism (VCD) is useful to determine the twisting pattern of 2,2'-bipyridyl compounds. The dyad shows crystallization-induced emission enhancement (CIEE).
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Affiliation(s)
- Kazuto Takaishi
- †Faculty of Science and Technology, Seikei University, Musashino, Tokyo 180-8633, Japan.,‡Elements Chemistry Laboratory, RIKEN, and Advanced Elements Chemistry Research Team, RIKEN, Center for Sustainable Resource Science (CSRS), Wako, 351-0198, Japan
| | - Jun Suzuki
- †Faculty of Science and Technology, Seikei University, Musashino, Tokyo 180-8633, Japan
| | - Tatsuya Yabe
- †Faculty of Science and Technology, Seikei University, Musashino, Tokyo 180-8633, Japan
| | - Hikaru Asano
- †Faculty of Science and Technology, Seikei University, Musashino, Tokyo 180-8633, Japan
| | - Michihiro Nishikawa
- †Faculty of Science and Technology, Seikei University, Musashino, Tokyo 180-8633, Japan
| | - Daisuke Hashizume
- §Materials Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
| | - Atsuya Muranaka
- ‡Elements Chemistry Laboratory, RIKEN, and Advanced Elements Chemistry Research Team, RIKEN, Center for Sustainable Resource Science (CSRS), Wako, 351-0198, Japan
| | - Masanobu Uchiyama
- ‡Elements Chemistry Laboratory, RIKEN, and Advanced Elements Chemistry Research Team, RIKEN, Center for Sustainable Resource Science (CSRS), Wako, 351-0198, Japan.,∥Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo 113-0033, Japan
| | - Akihiro Yokoyama
- †Faculty of Science and Technology, Seikei University, Musashino, Tokyo 180-8633, Japan
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Kohler L, Schoffers E, Driscoll E, Zeller M, Schmiesing C. First isolation of disubstituted cis-5,6-dihydro-1,10-phenanthrolines. lipase-mediated resolution of cis- and trans-phenoxy alcohol isomers and assignment of absolute stereochemistry via cd and nmr spectroscopy. Chirality 2012; 24:245-51. [DOI: 10.1002/chir.21989] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 11/02/2011] [Indexed: 11/06/2022]
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