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Abstract
Organoboron acids are stable, organic-soluble Lewis acids with potential application as catalysts for a wide variety of chemical reactions. In this review, we summarize the utility of boronic and borinic acids, as well as boric acid, as catalysts for organic transformations. Typically, the catalytic processes exploit the Lewis acidity of trivalent boron, enabling the reversible formation of a covalent bond with oxygen. Our focus is on recent developments in the catalysis of dehydration, carbonyl condensation, acylation, alkylation, and cycloaddition reactions. We conclude that organoboron acids have a highly favorable prospectus as the source of new catalysts.
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Affiliation(s)
- Brian J Graham
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Ronald T Raines
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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Yamatsugu K, Kanai M. Catalytic Approaches to Chemo- and Site-Selective Transformation of Carbohydrates. Chem Rev 2023; 123:6793-6838. [PMID: 37126370 DOI: 10.1021/acs.chemrev.2c00892] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Carbohydrates are a fundamental unit playing pivotal roles in all the biological processes. It is thus essential to develop methods for synthesizing, functionalizing, and manipulating carbohydrates for further understanding of their functions and the creation of sugar-based functional materials. It is, however, not trivial to develop such methods, since carbohydrates are densely decorated with polar and similarly reactive hydroxy groups in a stereodefined manner. New approaches to chemo- and site-selective transformations of carbohydrates are, therefore, of great significance for revolutionizing sugar chemistry to enable easier access to sugars of interest. This review begins with a brief overview of the innate reactivity of hydroxy groups of carbohydrates. It is followed by discussions about catalytic approaches to enhance, override, or be orthogonal to the innate reactivity for the transformation of carbohydrates. This review avoids making a list of chemo- and site-selective reactions, but rather focuses on summarizing the concept behind each reported transformation. The literature references were sorted into sections based on the underlying ideas of the catalytic approaches, which we hope will help readers have a better sense of the current state of chemistry and develop innovative ideas for the field.
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Affiliation(s)
- Kenzo Yamatsugu
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Richu, Sharmhal A, Kumar A, Kumar A. Insights into the applications and prospects of ionic liquids towards the chemistry of biomolecules. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Sun T, Jin R, Yang Y, Jia Y, Hu S, Jin Y, Wang Q, Li Z, Zhang Y, Wu J, Jiang Y, Lv X, Liu S. Direct α-C-H Alkylation of Structurally Diverse Alcohols via Combined Tavaborole and Photoredox Catalysis. Org Lett 2022; 24:7637-7642. [PMID: 36218287 DOI: 10.1021/acs.orglett.2c03117] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we report a method that uses antifungal tavaborole as a co-catalyst for direct α-C-H alkylation of structurally diverse alcohols through photoredox catalysis. The protocol features mild conditions, remarkable scope, and wide functional group tolerance, which allows for the construction of a wide array of highly functionalized alcohols, including homoserine derivatives and C-glycosyl amino acids. We also demonstrate the synthetic applications of this methodology to the late-stage functionalization of pharmaceuticals and natural products.
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Affiliation(s)
- Tianyi Sun
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Ruyi Jin
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Yan Yang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Yuqi Jia
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Shuxu Hu
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Yanqi Jin
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Qin Wang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Ziyu Li
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Yifan Zhang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Jiming Wu
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Yuxin Jiang
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Xiaoqing Lv
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
| | - Shihui Liu
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing, Zhejiang 314001, People's Republic of China
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Warlin N, Nilsson E, Guo Z, Mankar SV, Valsange NG, Rehnberg N, Lundmark S, Jannasch P, Zhang B. Synthesis and melt-spinning of partly bio-based thermoplastic poly(cycloacetal-urethane)s toward sustainable textiles. Polym Chem 2021. [DOI: 10.1039/d1py00450f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Partly bio-based thermoplastic poly(cycloacetal-urethane)s synthesized and melt-spun into textile fibres that can be potentially chemically recycled.
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Affiliation(s)
- Niklas Warlin
- Centre of Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - Erik Nilsson
- Plasman, Molndalsvagen 36, 412 63 Gothenburg, Sweden
- Department of Chemistry, Biomaterials and Textile, RISE - Research Institutes of Sweden, Mölndal, SE-43153, Sweden
| | - Zengwei Guo
- Department of Chemistry, Biomaterials and Textile, RISE - Research Institutes of Sweden, Mölndal, SE-43153, Sweden
| | - Smita V. Mankar
- Centre of Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - Nitin G. Valsange
- Centre of Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - Nicola Rehnberg
- Centre of Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
- Strategic R&D, Bona AB, Box 210 74, 200 21 Malmö, Sweden
| | - Stefan Lundmark
- Perstorp AB, Innovation, Perstorp Industrial Park, 284 80 Perstorp, Sweden
| | - Patric Jannasch
- Centre of Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - Baozhong Zhang
- Centre of Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
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