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Guo Z, Chen C, Zhao J, Guo X, Jia L, Liu P, Marcus Pedersen C, Hou X, Qiao Y, Wang Y. Mechanism of the dehydration of N-acetyl-d-glucosamine into N-containing platform molecule 3-acetamido-5-acetylfuran: NMR study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhao J, Liu R, Zhang Z, Xing Q, Chang H, Hou X, Wang Y. Tautomer distributions of N-acetyl-D-glucosamine in the condition of commonly utilized solvents and catalysts for biorefinery: NMR study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Jia L, Liu R, Lv J, Liu L, Zhang Z, Wang Y, Hou X. Probing the interactions of GlcNH 2 with boric acid via NMR spectroscopy. Phys Chem Chem Phys 2021; 23:15758-15765. [PMID: 34286766 DOI: 10.1039/d1cp01795k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The essential role of boronic esters in controlling both the direction and selectivity of chemical reactions as well as their significant function in catalytic activity have been demonstrated for industrially important processes. The specific interaction analyses of the monosaccharide GlcNH2 with boric acid are of interest since monosaccharides serve as model systems for the more sophisticated carbohydrate molecules. The interaction of GlcNH2 with boric acid was systematically investigated by numerous NMR techniques. A 1 : 1 chelate boron complex coordinated at the cis-1,2 position of GlcNH2 was identified as the major species in DMSO-d6 solution via1H and 13C INEPT DOSY NMR spectroscopy. This specific boron nitrogen coordination mechanism was further supported by the 1H-15N HSQC spectra. Variations in the spin-lattice relaxation times (T1) of the 13C1 nucleus also provided quantitative data regarding this non-covalent interactions. This is an application of 1H, 13C INEPT DOSY, 1H-15N HSQC, and relaxation methods to study such aggregations in solutions. These methods have potential applications in the characterization of reactive intermediates in biomass conversions.
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Affiliation(s)
- Lingyu Jia
- Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China. and Shanxi Engineering Research Center of Biorefinery, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China. and School of Medical Sciences, Zhengzhou University, Zhengzhou 450001, People's Republic of China
| | - Rui Liu
- Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| | - Jiayu Lv
- Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| | - Luqi Liu
- Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| | - Zhenzhou Zhang
- Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, People's Republic of China.
| | - Yingxiong Wang
- Shanxi Engineering Research Center of Biorefinery, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China.
| | - Xianglin Hou
- Shanxi Engineering Research Center of Biorefinery, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, People's Republic of China.
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