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Nakamura T, Ishikawa H, Ban K, Yoshida Y, Mino T, Kasashima Y, Sakamoto M. Attrition-Enhanced Asymmetric Transformation of Axially Chiral Nicotinamides by Dynamic Chiral Salt Formation. Chempluschem 2022; 87:e202100504. [PMID: 35023638 DOI: 10.1002/cplu.202100504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/28/2021] [Indexed: 12/30/2022]
Abstract
Atroposelective resolution for axially chiral nicotinamides was achieved by dynamic chiral salt formation with L-DBTA using six types of nicotinamides that could not be optically resolved by the preferential crystallization method. Kinetic studies of their racemization indicated that the chiral conformation was retained for a significant period of time. Two methods of crystallization-induced asymmetric transformation were examined by dynamic diastereomeric salt formation: solvent evaporation from a supersaturated solution, and attrition-enhanced asymmetric transformation. The attrition method was more effective for asymmetric amplification of diastereomeric salts of axially chiral materials. Attrition of equimolar amount of the nicotinamide salts with L-DBTA converged to one diastereomer salts, and the corresponding enantiomers in 87-99 % ee were obtained after the chiral acid was removed. Changing the ratio of two of the nicotinamides with L-DBTA to 1 : 2 inverted the axial chirality.
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Affiliation(s)
- Takumi Nakamura
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Hiroki Ishikawa
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Kazuma Ban
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Yasushi Yoshida
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Takashi Mino
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
| | - Yoshio Kasashima
- Education Center, Faculty of Creative Engineering, Chiba Institute of Technology Shibazono, Narashino, Chiba, 275-0023, Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology Graduate School of Engineering, Chiba University, Yayoi-cho, Inage-ku, Chiba, Chiba, 263-8522, Japan
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Kolarovič A, Jakubec P. State of the Art in Crystallization‐Induced Diastereomer Transformations. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100473] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Andrej Kolarovič
- Department of Chemistry Faculty of Education Trnava University Priemyselná 4 918 43 Trnava Slovakia
| | - Pavol Jakubec
- Institute of Organic Chemistry Catalysis and Petrochemistry Slovak University of Technology Radlinského 9 812 37 Bratislava Slovakia
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Ishikawa H, Ban K, Uemura N, Yoshida Y, Mino T, Kasashima Y, Sakamoto M. Attrition‐Enhanced Deracemization of Axially Chiral Nicotinamides. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901826] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hiroki Ishikawa
- Department of Applied Chemistry and Biotechnology Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Kazuma Ban
- Department of Applied Chemistry and Biotechnology Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Naohiro Uemura
- Department of Applied Chemistry and Biotechnology Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Yasushi Yoshida
- Department of Applied Chemistry and Biotechnology Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
- Molecular Chirality Research Center Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Takashi Mino
- Department of Applied Chemistry and Biotechnology Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
- Molecular Chirality Research Center Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
| | - Yoshio Kasashima
- Education Center Faculty of Creative Engineering Chiba Institute of Technology Shibazono, Narashino 275‐0023 Chiba Japan
| | - Masami Sakamoto
- Department of Applied Chemistry and Biotechnology Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
- Molecular Chirality Research Center Graduate School Engineering Chiba University Yayoi‐cho, Inage‐ku 263‐8522 Chiba Japan
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Affiliation(s)
- Masami Sakamoto
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University
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Yagishita F, Takagishi N, Ishikawa H, Kasashima Y, Mino T, Sakamoto M. Deracemization of Quinolonecarboxamides by Dynamic Crystalline Salt Formation and Asymmetric Photoreaction by Using the Frozen Chirality. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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