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Chen S, Wen W, Zhao X, Zhang Z, Li W, Zhang Y, Li B, Zhu L. Preparation of Chitosan-Composite-Film-Supported Copper Nanoparticles and Their Application in 1,6-Hydroboration Reactions of p-Quinone Methides. Molecules 2022; 27:molecules27227962. [PMID: 36432064 PMCID: PMC9695593 DOI: 10.3390/molecules27227962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/10/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
Here, we describe the preparation of copper nanoparticles that are stabilized on a chitosan composite film (CP@Cu). This material could catalyze the 1,6-hydroboration reactions of p-quinone methides with B2pin2 as a boron source under mild conditions. This reaction exhibited very good functional group compatibility, and the organoboron compounds that were formed could easily be converted into corresponding hydroxyl products with good to excellent yields. This newly developed methodology provides an efficient and sequential pathway for the synthesis of gem-disubstituted methanols.
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Affiliation(s)
- Shuhan Chen
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Wei Wen
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Xue Zhao
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Zelang Zhang
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
| | - Weishuang Li
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
- Correspondence: (W.L.); (B.L.); (L.Z.)
| | - Yaoyao Zhang
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
| | - Bojie Li
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
- Correspondence: (W.L.); (B.L.); (L.Z.)
| | - Lei Zhu
- School of Chemistry and Materials Science, Hubei Engineering University, Xiaogan 432000, China
- School of Materials Science and Engineering, Hubei University, Wuhan 430062, China
- Correspondence: (W.L.); (B.L.); (L.Z.)
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You G, Xu L, Wei Y. The Synthesis of Picolinamide-Supported Tetracoordinated Organoboron Complexes with Aggregation-Induced Emission Property. Front Chem 2022; 10:856832. [PMID: 35392422 PMCID: PMC8980608 DOI: 10.3389/fchem.2022.856832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/21/2022] [Indexed: 11/25/2022] Open
Abstract
The picolinamide-supported tetracoordinated organoboron complexes containing diaryl boronyl segments have been synthesized for the first time. Aryl trifluoroborates were utilized as the BAr2 sources to introduce different aryl motifs with diverse functional groups. The optical experiments discovered these five-membered boron-containing complexes were aggregation-induced emission (AIE) active, thus affording a new class of AIE molecules.
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Affiliation(s)
| | - Liang Xu
- *Correspondence: Liang Xu, ; Yu Wei,
| | - Yu Wei
- *Correspondence: Liang Xu, ; Yu Wei,
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Dipyridylmethane Ethers as Ligands for Luminescent Ir Complexes. Molecules 2021; 26:molecules26237161. [PMID: 34885742 PMCID: PMC8659258 DOI: 10.3390/molecules26237161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/23/2021] [Accepted: 11/24/2021] [Indexed: 11/17/2022] Open
Abstract
This work reports two new cationic heteroleptic cyclometalated iridium complexes, containing ether derivatives of di(pyridin-2-yl)methanol. The new ligands are based on dipyridin-2-ylmethane and are designed to obtain ether-based intermediates with extended electronic conjugation by insertion of π system such as phenyl, allyl and ethynyl. Different synthetic strategies were employed to introduce these units, as molecular wires, between the dipyridin-2-ylmethane chelating portion and the terminal N-containing functional group, such as amine and carbamide. The corresponding complexes show luminescence in the blue region of the spectrum, lifetimes between 0.6 and 2.1 μs, high quantum yield and good electrochemical behavior. The computational description (DFT) of the electronic structure highlights the key role of the conjugated π systems on optical and electrochemical properties of the final products.
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