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Zhou P, Liang X, Xu Z, Chen H, Wei Z, Liang T, Jiang J, Zhang Z. Regiodivergent C-H alkynylation of 2-arylthiazoles switched by Ru II and Pd II catalysis. Chem Commun (Camb) 2024; 60:6679-6682. [PMID: 38860866 DOI: 10.1039/d4cc02254h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Two complementary regiodivergent C-H alkynylations of 2-arylthiazoles are reported. When RuII catalysis is employed, an aryl ortho-alkynylation process is favored. The alkynylated products are gained in good yields. With the use of PdII catalysis, a thiazole C5-alkynylation process is developed, allowing for the construction of C5-alkynylated products. This strategy not only expands the methods for the functionalization of 2-arylthiazoles, but also provides new opportunities for the rapid assembly of complex molecular structures, which may have great potential in organic synthesis, medicinal chemistry, and materials science.
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Affiliation(s)
- Pengfei Zhou
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Xinyao Liang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Zekun Xu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Honggu Chen
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Zongwu Wei
- School of Resources, Environment and Materials, Guangxi University, Nanning 530004, P. R. China
| | - Taoyuan Liang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
| | - Zhuan Zhang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, P. R. China.
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Zhu YL, Zhao N, Fu XL, Zhao XY, Li YL, Shao YD, Chen J, Lu Y. Co(III)-Catalyzed C6-Selective C-H Activation/Pyridine Migration of 2-Pyridones with Propiolates. Org Lett 2024; 26:12-17. [PMID: 38127552 DOI: 10.1021/acs.orglett.3c03358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
A versatile Co(III)-catalyzed C6-selective C-H activation/pyridine migration of 2-pyridones with available propiolates as coupling partners was demonstrated. This method features high atom economy, excellent regioselectivity, and good functional group tolerance by employing an inexpensive Co(III) catalyst under mild reaction conditions. Moreover, gram-scale synthesis and late-stage modifications of pharmaceuticals were performed to prove the effectiveness of these synthetic approaches.
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Affiliation(s)
- Yue-Lu Zhu
- School of Chemistry and Chemical Engineering, Heze University, Heze, Shandong 274015, P. R. China
| | - Na Zhao
- School of Chemistry and Chemical Engineering, Heze University, Heze, Shandong 274015, P. R. China
| | - Xin-Long Fu
- School of Chemistry and Chemical Engineering, Heze University, Heze, Shandong 274015, P. R. China
| | - Xin-Yang Zhao
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Yan-Lin Li
- School of Chemistry and Chemical Engineering, Heze University, Heze, Shandong 274015, P. R. China
| | - You-Dong Shao
- School of Chemistry and Chemical Engineering, Heze University, Heze, Shandong 274015, P. R. China
| | - Jiao Chen
- College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, P. R. China
- College of Life Sciences, Northwest University, Xi'an, Shaanxi 710069, P. R. China
| | - Yi Lu
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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