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Liu PY, Zhao YM, Xu Y, Wang S, Song L, Meng Q, Zhang Z, Yu F, He YP. Experiment and Computational Study on Pd-Catalyzed Methoxyiminoacyl-Directed γ-Alkoxylation of Alkylamides. J Org Chem 2023; 88:14445-14453. [PMID: 37815929 DOI: 10.1021/acs.joc.3c01460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/12/2023]
Abstract
The direct alkoxylation of amides has been accomplished via methoxyiminoacyl (MIA)-mediated Pd-catalyzed C-H functionalization. A diverse array of alkylamide substrates is amenable to this protocol, providing γ-C(sp3)-alkoxylation of alkylamide derivatives with good to high efficiency. Two aspects of the research were completed to explore the reaction mechanism. On the one hand, the result of the kinetic isotopic effect experiment and control experiment indicated that reductive elimination is a rate-limiting step. On the other hand, density functional theory calculations demonstrated that a concerted Sn2 reductive elimination mechanism pathway is prior. Finally, the MIA group could be efficiently hydrogenated and protected in a one-pot procedure, which provides a short synthetic route to γ-methoxy amino acid derivatives.
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Affiliation(s)
- Peng-Yu Liu
- Key Laboratory for Functional Material, Educational Department of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
- State Key Laboratory Fine Chemicals, Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
| | - Yi-Min Zhao
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
- State Key Laboratory Fine Chemicals, Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
| | - Yuehui Xu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
- State Key Laboratory Fine Chemicals, Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
| | - Shuai Wang
- State Key Laboratory Fine Chemicals, Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
| | - Lijuan Song
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
| | - Qingtao Meng
- Key Laboratory for Functional Material, Educational Department of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
| | - Zhiqiang Zhang
- Key Laboratory for Functional Material, Educational Department of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
| | - Fang Yu
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
- State Key Laboratory Fine Chemicals, Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
- School of pharmaceutical engineering, Zhejiang Pharmaceutical University, No 666 Siming road, Fenghua District, Ningbo 315599, China
| | - Yu-Peng He
- Key Laboratory for Functional Material, Educational Department of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, China
- School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China
- State Key Laboratory Fine Chemicals, Ningbo Institute of Dalian University of Technology, Ningbo 315016, China
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Chen LL, Xu YC, Yang Y, Li N, Zou HX, Wen HH, Yan X. Prediction of peptide-induced silica formation under a wide pH range by molecular descriptors. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Wang K, Zhang W, Liu N, Hu D, Yu F, He YP. Methionine-Derived Organogels as Lubricant Additives Enhance the Continuity of the Oil Film through Dynamic Self-Healing Assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:11492-11501. [PMID: 36089744 DOI: 10.1021/acs.langmuir.2c02181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
(S)-2-((1-(Hexadecylamino)-4-(methylthio)-1-oxobutan-2-yl)carbamoyl)benzoic acid (HMTA) was efficiently synthesized and successfully applied as an additive to several types of blank lubricant oils. Initially, HMTA self-assembles to fibrous structures and traps blank lubricant oils to form gel lubricants. The prepared gel lubricants show thermo-reversible properties and enhanced lubricating performance by 3∼5-fold. X-ray photoelectron spectrometry of the metal surface and the quartz crystal microbalance illustrated that there are no obvious interactions between HMTA and the metal surface. The results of Fourier transform infrared spectroscopy and X-ray diffraction further confirm that inter/intro-molecular H-bonding interactions are the main driving force for the self-healing of HMTA. Finally, molecular dynamics (MD) simulations show that the number of noncovalent H-bonding interactions fluctuates with time, and this highly dynamic H-bonding network could regulate the self-assembly process and result in the self-healing property of the HMTA organogel, which is consistent with the results of the step-strain tests. Especially, the Hirshfeld independent gradient model method at the quantum level demonstrated that C8/C9 aromatics of 500SN have strong π-π stacking interactions with the aromatic heads of HMTA and van der Waals interactions with the hydrophobic tails of HMTA, which disrupt the self-assembly behavior of the 500SN model. Therefore, the calculation studies offer a rational explanation for the superior lubricant property of the PAO10 gel as compared to that for 500SN.
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Affiliation(s)
- Kai Wang
- State Key Laboratory Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
- Ningbo Institute of Dalian University of Technology, No. 26 Yucai Road, Ningbo 315016, China
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Dandong Lu West 1, Fushun, 113001, Liaoning China
| | - Wannian Zhang
- State Key Laboratory Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
- Ningbo Institute of Dalian University of Technology, No. 26 Yucai Road, Ningbo 315016, China
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Dandong Lu West 1, Fushun, 113001, Liaoning China
| | - Na Liu
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Dandong Lu West 1, Fushun, 113001, Liaoning China
| | - Dianwen Hu
- State Key Laboratory Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
- Ningbo Institute of Dalian University of Technology, No. 26 Yucai Road, Ningbo 315016, China
| | - Fang Yu
- State Key Laboratory Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
- Ningbo Institute of Dalian University of Technology, No. 26 Yucai Road, Ningbo 315016, China
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Dandong Lu West 1, Fushun, 113001, Liaoning China
| | - Yu-Peng He
- State Key Laboratory Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China
- Ningbo Institute of Dalian University of Technology, No. 26 Yucai Road, Ningbo 315016, China
- Key Laboratory of Petrochemical Catalytic Science and Technology, Liaoning Petrochemical University, Dandong Lu West 1, Fushun, 113001, Liaoning China
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