1
|
Sharma T, Sumit, Sachin, Chandra D, Gupta SS, Sharma U. Co(III)-Catalyzed Regioselective Functionalization of Isoquinolones with Naphthoquinones. Org Lett 2024; 26:5027-5031. [PMID: 38829220 DOI: 10.1021/acs.orglett.4c01686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
A strategy for Co(III)-catalyzed C(sp2)-H alkenylation of N-protected isoquinolones with 1,4-naphthoquinones has been disclosed. The developed protocol was efficiently applied for diversely substituted isoquinolones. Preliminary mechanistic experiments revealed the involvement of a five-membered cobaltacycle as an intermediate. Deuterium labeling experiments suggested the reversible nature of the C-H activation step. The scale-up reaction was also carried out, and the product was utilized as a chemosensor to detect Fe3+ ions.
Collapse
Affiliation(s)
- Tamanna Sharma
- C-H Activation and Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India
| | - Sumit
- C-H Activation and Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sachin
- C-H Activation and Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Devesh Chandra
- C-H Activation and Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India
| | - Shiv Shankar Gupta
- C-H Activation and Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Upendra Sharma
- C-H Activation and Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
2
|
Sachin, Sharma T, Chandra D, Sumit, Sharma U. Inherent directing group-enabled Co(III)-catalyzed C-H allylation/vinylation of isoquinolones. Chem Commun (Camb) 2024; 60:5626-5629. [PMID: 38715526 DOI: 10.1039/d4cc01146e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Co(III)-catalysed site-selective C8-allylation and vinylation of isoquinolones with allyl acetate and vinyl acetates has been accomplished. The oxo group of isoquinolone has been utilised as an inherent directing group. Based on preliminary mechanistic studies, a plausible mechanism for the developed reaction has also been delineated. Broad substrate scope with good to excellent yields and post-synthetic transformations of allylated and vinylated isoquinolines highlight the importance of the reaction.
Collapse
Affiliation(s)
- Sachin
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Tamanna Sharma
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
| | - Devesh Chandra
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
| | - Sumit
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Upendra Sharma
- C-H Activation & Phytochemistry Lab, Chemical Technology Division, CSIR-IHBT, Palampur 176061, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
Khandelia T, Ghosh S, Patel BK. Dearomative bis-functionalization of quinoxalines and bis- N-arylation of (benz)imidazoles via Cu(II)-mediated addition of boronic acids. Chem Commun (Camb) 2023; 59:2118-2121. [PMID: 36723297 DOI: 10.1039/d2cc06399a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A Cu(OTf)2-mediated regioselective dearomative aryl-hydroxylation across the C(sp2)N bond of 2-aryl quinoxalines and bis-N-arylation of (benz)imidazoles were developed using aryl boronic acids. For the dearomative aryl-hydroxylation, the C-center should be electrophilic (ca. 0.08), the N-center nucleophilic (ca. -0.50), and the C(sp2)N bond polarized (Δe = 0.609).
Collapse
Affiliation(s)
- Tamanna Khandelia
- Department of Chemistry, Indian Institute of Technology Guwahati, 781 039, Assam, India.
| | - Subhendu Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, 781 039, Assam, India.
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, 781 039, Assam, India.
| |
Collapse
|
5
|
Parmar D, Dhiman AK, Kumar R, Sharma AK, Sharma U. Cp*Co(III)-Catalyzed Selective C8-Olefination and Oxyarylation of Quinoline N-Oxides with Terminal Alkynes. J Org Chem 2022; 87:9069-9087. [PMID: 35758768 DOI: 10.1021/acs.joc.2c00752] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Herein we report Cp*Co(III)-catalyzed site-selective (C8)-H olefination and oxyarylation of quinoline N-oxides with terminal alkynes. The selectivity for C8-olefination and oxyarylation is sterically and electronically controlled. In the case of quinoline N-oxides (unsubstituted at the C2 position), only the olefination product was obtained irrespective of the nature of the alkynes. In contrast, oxyarylation was observed exclusively when 2-substituted quinoline N-oxides were reacted with 9-ethynylphenanthrene. However, alkynes with electron-withdrawing groups provided only olefination products with 2-substituted quinoline N-oxides. The developed strategy allowed a facile functionalization of quinoline N-oxides bearing natural molecules and an estrone-derived terminal alkyne to deliver the corresponding olefinated and oxyarylated products. To understand the reaction mechanism, control experiments, deuterium-labeling experiments, and kinetic isotope effect (KIE) studies were performed.
Collapse
Affiliation(s)
- Diksha Parmar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ankit Kumar Dhiman
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rohit Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Akhilesh K Sharma
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Upendra Sharma
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
6
|
Chandra D, Manisha, Sharma U. Recent Advances in the High-Valent Cobalt-Catalyzed C-H Functionalization of N-Heterocycles. CHEM REC 2021; 22:e202100271. [PMID: 34932274 DOI: 10.1002/tcr.202100271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/21/2021] [Indexed: 12/18/2022]
Abstract
Direct functionalization of heterocycles using C-H activation widely relies on the precious metal complexes. In past decade, the use of earth abundant and inexpensive transition metal to functionalize heterocycles has become an attractive alternate strategy. This concept is also interesting due to the unique reactivity pattern of these inexpensive metals. In this context we and other research groups have utilized the high-valent cobalt complexes as an inexpensive and readily available catalyst for the functionalization of heterocycles. In this review, we intend to brief recent progress made in the area of high-valent cobalt complexes catalyzed C-H functionalization of N-containing heterocycles.
Collapse
Affiliation(s)
- Devesh Chandra
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Manisha
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Upendra Sharma
- Chemical Technology Division, CSIR-IHBT, Palampur, HP 176 061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| |
Collapse
|