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Zhang C, Shao M, Wu D, Li Z, Zhao M, Zhang X, Zhai B, Luo Y, Li X. Azide Ionic Liquids for Safe, Green, and Highly-Efficient Azidation Reactions to Produce Azide Polymers. Angew Chem Int Ed Engl 2023; 62:e202314052. [PMID: 37945536 DOI: 10.1002/anie.202314052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/12/2023]
Abstract
Azide compounds are widely used and especially, polymers bearing pendant azide groups are highly desired in numerous fields. However, harsh reaction conditions are always mandatory to achieve full azidation, causing severe side reactions and degradation of the polymers. Herein, we report the design and preparation of two azide ionic liquids (AILs) with azide anion and triethylene glycol (E3 )-containing cation, [P444E3 ][N3 ] and [MIME3 ][N3 ]. Compared with the traditional sodium azide (NaN3 ) approach, both AILs showed much higher reaction rates and functional-group tolerance. More importantly, they could act as both reagents and solvents for the quantitative azidation of various polymeric precursors under mild conditions. Theoretical simulations suggested that the outstanding performance of AILs originated from the existence of ion pairs during the reaction, and the E3 moieties played a crucial role. Lastly, after the reaction, the AILs could be easily regenerated, presenting a safer, greener, and highly efficient synthesis route for azide polymers.
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Affiliation(s)
- Chi Zhang
- School of Chemistry & Chemical Engineering, Engineering Research Center for Optoelectronic Functional Materials of Henan Province, Shangqiu Normal University, Shangqiu, 476000, P. R. China
| | - Meiling Shao
- School of Chemistry & Chemical Engineering, Engineering Research Center for Optoelectronic Functional Materials of Henan Province, Shangqiu Normal University, Shangqiu, 476000, P. R. China
| | - Dongqing Wu
- School of Chemistry & Chemical Engineering, Engineering Research Center for Optoelectronic Functional Materials of Henan Province, Shangqiu Normal University, Shangqiu, 476000, P. R. China
| | - Zhongyi Li
- School of Chemistry & Chemical Engineering, Engineering Research Center for Optoelectronic Functional Materials of Henan Province, Shangqiu Normal University, Shangqiu, 476000, P. R. China
| | - Muzhi Zhao
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xiangfei Zhang
- School of Chemistry & Chemical Engineering, Engineering Research Center for Optoelectronic Functional Materials of Henan Province, Shangqiu Normal University, Shangqiu, 476000, P. R. China
| | - Bin Zhai
- School of Chemistry & Chemical Engineering, Engineering Research Center for Optoelectronic Functional Materials of Henan Province, Shangqiu Normal University, Shangqiu, 476000, P. R. China
| | - Yunjun Luo
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Xiaoyu Li
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
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Kim HE, Choi JH, Chung WJ. Fluorine-Assisted Rearrangement of Geminal Azidofluorides to Imidoyl Fluorides. J Org Chem 2023. [PMID: 37130141 DOI: 10.1021/acs.joc.3c00183] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Organoazide rearrangement constitutes versatile synthetic strategies but typically requires an extremely strong acid and/or a high reaction temperature. Our group recently discovered the remarkable accelerating effect of the geminal fluorine substituent that enables the facile rearrangement of azides into imidoyl fluorides without the aid of acid under much milder reaction conditions. The role of geminal fluorine was elucidated by both experimental and computational investigations. This new reactivity led to the development of a practical one-step tandem preparative method for potentially useful and bench-stable imidoyl fluorides from a wide range of structurally diverse geminal chlorofluorides. Our additional efforts to expand the reaction scope regarding the migrating group, halogen, and carbonyl function are described, and the synthetic utility of the imidoyl fluoride products was demonstrated in hopes of promoting the use of this under-appreciated functional group in the synthetic organic community.
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Affiliation(s)
- Ha Eun Kim
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jun-Ho Choi
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Won-Jin Chung
- Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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Andreev I, Boichenko M, Ratmanova N, Ivanova O, Levina I, Khrustalev V, Sedov I, Trushkov I. 4‐(Dimethylamino)pyridinium Azide in Protic Ionic Liquid Media as a Stable Equivalent of Hydrazoic Acid. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200486] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ivan Andreev
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology Oncology and Immunology RUSSIAN FEDERATION
| | - Maksim Boichenko
- Lomonosov Moscow State University Department of Chemistry RUSSIAN FEDERATION
| | - Nina Ratmanova
- Dmitry Rogachev National Medical Research Center of Pediatric Hematology Oncology and Immunology RUSSIAN FEDERATION
| | | | - Irina Levina
- FSBSI Institute of Biochemical Physics named after N M Emanuel of the Russian Academy of Sciences RUSSIAN FEDERATION
| | | | - Igor Sedov
- Kazan Federal University RUSSIAN FEDERATION
| | - Igor Trushkov
- N.D. Zelinsky Institute of Organic Chemistry RUSSIAN FEDERATION
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Chang JJ, Pan HM, Goto A. Synthesis of vinyl iodide chain-end polymers via organocatalyzed chain-end transformation. Chem Commun (Camb) 2021; 57:1105-1108. [PMID: 33443256 DOI: 10.1039/d0cc07987a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the presence of alkynes (CH[triple bond, length as m-dash]C-R2), iodide chain-end polymers (Polymer-I) were successfully transformed to vinyl iodide chain-end polymers (polymer-CH[double bond, length as m-dash]CR2-I) in a single step via organocatalysis. This reaction is completely metal-free and easy to carry out without using special reagents or special conditions. The polymers encompassing polyacrylates and polymethacrylate, and additional functionalities (e.g., OH and CF3) were also incorporated into the R2 moiety. The obtained Polymer-CH[double bond, length as m-dash]CR2-I further served as a useful precursor for copper-catalyzed cross-coupling reactions with various thiols (R3-SH) to yield vinyl sulfide chain-end polymers (polymer-CH[double bond, length as m-dash]CR2-SR3) with various R3 moieties. Interestingly, under selected conditions, this organocatalysis also offered block-like copolymers containing a conjugated oligo-alkyne segment and a non-conjugated polyacrylate segment. Exploiting the unique structure, the block-like copolymer was used as an efficient dispersant of carbon nanotubes.
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Affiliation(s)
- Jun Jie Chang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
| | - Houwen Matthew Pan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
| | - Atsushi Goto
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
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Wang CG, Chong AML, Pan HM, Sarkar J, Tay XT, Goto A. Recent development in halogen-bonding-catalyzed living radical polymerization. Polym Chem 2020. [DOI: 10.1039/d0py00939c] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The development and applications of an organocatalyzed living radical polymerization via halogen-bonding catalysis, i.e., reversible complexation mediated polymerization (RCMP), are highlighted.
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Affiliation(s)
- Chen-Gang Wang
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
| | - Amerlyn Ming Liing Chong
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
| | - Houwen Matthew Pan
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
| | - Jit Sarkar
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
| | - Xiu Ting Tay
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
| | - Atsushi Goto
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- 637371 Singapore
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