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Miao B, Xue M, Ji S, Wang Z, Zhang Y. Cu-Catalyzed Methylenation of Alcohols with N-Methyl Amide as a Sustainable Methylene Reagent. J Org Chem 2023; 88:1128-1134. [PMID: 36583715 DOI: 10.1021/acs.joc.2c02637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Herein, we report a new approach to methylenation of alcohols using N-methyl amide as a sustainable methylene reagent; the N-methyl delivers the methylene group. This new reagent is easily prepared and stable to both air and moisture. Furthermore, the final byproduct of this methylene reagent can be recycled in excellent yields and then reused in methylenation reactions upon treating with CH3I.
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Affiliation(s)
- Bingyang Miao
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Meng Xue
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Shuaiyu Ji
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Zonghua Wang
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
| | - Yuexia Zhang
- College of Chemistry and Chemical Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China
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2
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Zhang Y, Liu Z, Zhu T, Huang Y, Fan W, Huang D. Synthesis of methylene-bridged α,β-unsaturated ketones: α-C sp3-H methylenation of aromatic ketones using Selectfluor as a mild oxidant. Org Biomol Chem 2022; 20:415-419. [PMID: 34908092 DOI: 10.1039/d1ob02043a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A three starting material four component reaction (3SM-4CR) is developed for the synthesis of α,β-unsaturated ketones and β-amino ketones in good yields. The reaction employs tetramethylethylenediamine (TMEDA) as a methylene and terminal olefin source, and Selectfluor as a mild oxidant. TMEDA worked as a dual synthon to provide two carbons in this metal-free transformation process. The scope and versatility of the methods have been demonstrated with 23 examples. A Selectfluor-promoted oxidative reaction mechanism is proposed based on the results of the experimental studies.
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Affiliation(s)
- Yuan Zhang
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zhiqi Liu
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Tingyu Zhu
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Ying Huang
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Weibin Fan
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Deguang Huang
- Fujian Normal University, College of Chemistry and Materials Science, Fuzhou 350007, China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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3
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Zeng M, Liu YX, Zheng JH, Zhao L, Zhu QH, Jiang D, Ling Y, Liu W, Zeng SX. Direct α-methylenation of triazines to terminal olefins with DMA. NEW J CHEM 2022. [DOI: 10.1039/d2nj04417j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We report an efficient metal (Cu or Ni)-catalysed α-methylenation of triazines to terminal olefins using DMA as a one-carbon source. Various substituted triazine derivatives are suitable for this reaction.
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Affiliation(s)
- Ming Zeng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Yi-xuan Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Jian-hui Zheng
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Lan Zhao
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Qi-han Zhu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Dengzhao Jiang
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Yun Ling
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Wenbo Liu
- School of Pharmacy and Life Science, Jiujiang University, Jiujiang 332005, China
| | - Shen-xin Zeng
- School of Pharmacy, Hangzhou Medical College, Hangzhou, 311399, China
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4
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Muzart J. A Journey from June 2018 to October 2021 with N, N-Dimethylformamide and N, N-Dimethylacetamide as Reactants. Molecules 2021; 26:6374. [PMID: 34770783 PMCID: PMC8587108 DOI: 10.3390/molecules26216374] [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: 08/23/2021] [Revised: 10/14/2021] [Accepted: 10/15/2021] [Indexed: 02/01/2023] Open
Abstract
A rich array of reactions occur using N,N-dimethylformamide (DMF) or N,N-dimethylacetamide (DMAc) as reactants, these two amides being able to deliver their own H, C, N, and O atoms for the synthesis of a variety of compounds. This account highlights the literature published since June 2018, completing previous reviews by the author.
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Affiliation(s)
- Jacques Muzart
- Institut de Chimie Moléculaire de Reims, CNRS-Université de Reims Champagne-Ardenne, B.P. 1039, CEDEX 2, 51687 Reims, France
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5
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Geng HQ, Wang LC, Hou CY, Wu XF. Palladium-Catalyzed Carbonylative Synthesis of α-Branched Enones from Aryl Iodides and Arylallenes. Org Lett 2020; 22:1160-1163. [PMID: 31965807 DOI: 10.1021/acs.orglett.0c00015] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In this communication, an interesting carbonylation protocol for the preparation of α-branched enones has been established. Starting from readily available aryl iodides and allenes, with formic acid as the CO source and reductant, moderate to good yields of the desired enones were isolated. Although it is a carbonylation methodology, the use of a CO source can avoid the manipulation of CO gas directly. Notably, this procedure also presents the first example on carbonylative synthesis of α-branched enones.
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Affiliation(s)
- Hui-Qing Geng
- Department of Chemistry , Zhejiang Sci-Tech University , Xiasha Campus , Hangzhou 310018 , People's Republic of China
| | - Le-Cheng Wang
- Department of Chemistry , Zhejiang Sci-Tech University , Xiasha Campus , Hangzhou 310018 , People's Republic of China
| | - Chen-Yang Hou
- Department of Chemistry , Zhejiang Sci-Tech University , Xiasha Campus , Hangzhou 310018 , People's Republic of China
| | - Xiao-Feng Wu
- Department of Chemistry , Zhejiang Sci-Tech University , Xiasha Campus , Hangzhou 310018 , People's Republic of China.,Leibniz-Institut für Katalyse e. V. an der Universität Rostock , Albert-Einstein-Straβe 29a , 18059 Rostock , Germany
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Meng J, Xia HM, Xu AQ, Wang YF, Wang Z, Zhang FL. Selective N-monomethylation of primary anilines with the controllable installation of N-CH2D, N-CHD2, and N-CD3 units. Org Biomol Chem 2020; 18:4922-4926. [DOI: 10.1039/d0ob01054e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The selective N-monomethylation of primary anilines with the controllable installation of N-CH2D, N-CHD2, and N-CD3 units was realized by using the amine-borane/N,N-dimethylformamide (DMF) system as the methyl precursor.
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Affiliation(s)
- Jing Meng
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Hui-Min Xia
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
| | - Ai-Qing Xu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
| | - Yi-Feng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
| | - Zhijuan Wang
- Institute of Advanced Synthesis
- School of Chemistry and Molecular Engineering
- Nanjing Tech University
- Nanjing
- China
| | - Feng-Lian Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- China
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