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Chen WL, Song JL, Fang S, Li JB, Zhang SS, Shu B. Rh(III)-catalyzed C(sp 2)-H functionalization/[4+2] annulation of oxadiazolones with iodonium ylides to access diverse fused-isoquinolines and fused-pyridines. Chem Commun (Camb) 2024; 60:6560-6563. [PMID: 38845542 DOI: 10.1039/d4cc02046d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
In this study, a Rh(III)-catalyzed C-H/N-H [4+2] annulation of oxadiazolones with iodonium ylides has been developed, which afforded a series of diverse fused-isoquinolines and fused-pyridines in moderate to high yields. These divergent synthesis protocols featured mild conditions, broad substrate scope, and functional-group compatibility. In addition, scale-up synthesis, related applications and preliminary mechanistic explorations were also accomplished.
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Affiliation(s)
- Wang-Liang Chen
- School of Pharmacy, Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China.
| | - Jia-Lin Song
- School of Pharmacy, Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China.
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China.
| | - Sheng Fang
- School of Pharmacy, Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China.
| | - Jiong-Bang Li
- School of Pharmacy, Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China.
| | - Shang-Shi Zhang
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China.
| | - Bing Shu
- School of Pharmacy, Guangdong Provincial Key Laboratory of Advanced Drug Delivery, Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China.
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2
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Nie JJ, Wang ZX. Rh(III)-Catalyzed C-H Allylation of Aromatic Ketoximes with Vinylaziridines. J Org Chem 2024; 89:5764-5777. [PMID: 38578982 DOI: 10.1021/acs.joc.4c00343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2024]
Abstract
The Rh(III)-catalyzed reaction of aromatic ketoximes with 2-vinylaziridines affords ortho-allylation products of the phenyl rings of aromatic ketoximes in moderate to excellent yields. The reaction requires 0.5 equiv of NaOAc as a base and occurs under mild conditions. The protocol exhibits ortho-monoallylation selectivity, wide scope of substrates, and good compatibility of functional groups.
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Affiliation(s)
- Jing-Jing Nie
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei 230026, Anhui, P. R. China
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3
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Zhu M, Zhu M, Wei F, Shao C, Li X, Liu B. Synthesis of Bridged Cycloisoxazoline Scaffolds via Rhodium-Catalyzed Coupling of Nitrones with Cyclic Carbonate. J Org Chem 2023; 88:16330-16339. [PMID: 37966420 DOI: 10.1021/acs.joc.3c01840] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Bridged isoxazolidines were synthesized via Rh(III)-catalyzed C-H allylation of α-aryl nitrones with 5-methylene-1,3-dioxan-2-one. The nitrone group serves as a directing group and 1,3-dipole in the C-H activation/[3 + 2] cycloaddition cascade, exhibiting excellent chemo- and stereoselectivity along with good functional group compatibility. The resulting skeletal structure was conveniently modified to produce a range of important chemical frameworks, and the protocol was applied to biologically active molecules.
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Affiliation(s)
- Man Zhu
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Mengdie Zhu
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Fangjie Wei
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Chongjing Shao
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xingwei Li
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bingxian Liu
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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4
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Basak S, Paul T, Punniyamurthy T. A redox-neutral weak carbonyl chelation assisted C4-H allylation of indoles with vinylcyclopropanes. Chem Commun (Camb) 2023; 59:11568-11571. [PMID: 37682283 DOI: 10.1039/d3cc03614f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
A weak acyl chelation-assisted distal C4-H allylation of indoles has been accomplished using vinylcyclopropanes as an allylating agent under redox-neutral ruthenium(II) catalysis. The regioselectivity, removable directing group, substrate scope and diastereoselectivity are the important practical features.
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Affiliation(s)
- Shubhajit Basak
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
| | - Tripti Paul
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati-781039, India.
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5
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Shu B, Song JL, Chen SY, Zheng YC, Zhang SS. Rh(III)-Catalyzed C-H Functionalization/Annulation of 1-Arylindazolones: Divergent Synthesis of Fused Indazolones and Allyl Indazolones. J Org Chem 2023; 88:3499-3508. [PMID: 36891880 DOI: 10.1021/acs.joc.2c02722] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
Rh(III)-catalyzed C-H/N-H annulation and C-H allylation of phenylindazolones have been realized by employing 5-methylene-1,3-dioxan-2-one and 4-vinyl-1,3-dioxolan-2-one as scalable cross-coupling partners, delivering functionalized indazolone fused heterocycles and branched and linear allyl indazolones respectively in moderate to high yield. These divergent synthesis protocols showcase mild conditions, broad substrate scope, and high functional-group compatibility. In addition, scale-up synthesis and preliminary mechanistic exploratory were also accomplished.
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Affiliation(s)
- Bing Shu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Jia-Lin Song
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Shao-Yong Chen
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Yi-Chuan Zheng
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Shang-Shi Zhang
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
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6
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Wu F, Xiao L, Xie H, Chen SY, Song JL, Zheng YC, Liu YZ, Zhang SS. Rhodium(III)-catalyzed regioselective C(sp 2)-H activation of indoles at the C4-position with iodonium ylides. Org Biomol Chem 2022; 20:5055-5059. [PMID: 35695281 DOI: 10.1039/d2ob00722c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein, we report a Rh(III)-catalyzed C4-selective activation of indoles by using iodonium ylides as carbene precursors. This protocol proceeded under redox neutral reaction conditions and provided important coupling products with good tolerance of functional groups and high yields. In addition, one-pot synthesis and scale-up and mechanistic studies were also conducted.
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Affiliation(s)
- Fuhai Wu
- School of Engineering, Guangzhou College of Technology and Business, Guangzhou, 510006, P. R. China.
| | - Lin Xiao
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Hui Xie
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Shao-Yong Chen
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Jia-Lin Song
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Yi-Chuan Zheng
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Yan-Zhi Liu
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
| | - Shang-Shi Zhang
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, P. R. China
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Taskesenligil Y, Aslan M, Cogurcu T, Saracoglu N. Directed C-H Functionalization of C3-Aldehyde, Ketone, and Acid/Ester-Substituted Free (NH) Indoles with Iodoarenes via a Palladium Catalyst System. J Org Chem 2022; 88:1299-1318. [PMID: 35609297 PMCID: PMC9903333 DOI: 10.1021/acs.joc.2c00716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Pd(II)-catalyzed C-H arylations of free (NH) indoles including different carbonyl directing groups on C3-position with aryl iodides are demonstrated. Importantly, the reactions are carried out using the same catalyst system without any additional transient directing group (TDG). In this study, the formyl group as a directing group gave the C4-arylated indoles versus C2-arylation. Using this catalyst system, C-H functionalization of 3-acetylindoles provided domino C4-arylation/3,2-carbonyl migration products. This transformation involves the unusual migration of the acetyl group to the C2-position following C4-arylation in one pot. Meanwhile, migration of the acetyl group could be simply controlled and N-protected 3-acetylindoles afforded C4-arylation products without migration of the acetyl group. Functionalization of indole-3-carboxylic acid (or methyl ester) with aryl iodides using the present Pd(II)-catalyst system resulted in decarboxylation followed by the formation of C2-arylated indoles. Based on the control experiments and the literature, plausible mechanisms are proposed. The synthetic utilities of these acetylindole derivatives have also been demonstrated. Remarkably, C4-arylated acetylindoles have allowed the construction of functionalized pityiacitrin (a natural product).
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8
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Hu YC, Min XT, Ji DW, Chen QA. Catalytic prenylation and reverse prenylation of aromatics. TRENDS IN CHEMISTRY 2022. [DOI: 10.1016/j.trechm.2022.04.004] [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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Liu YZ, Zeng YF, Shu B, Zheng YC, Xiao L, Chen SY, Song JL, Zhang X, Zhang SS. Rh( iii)-Catalyzed dienylation and cyclopropylation of indoles at the C4 position with alkylidenecyclopropanes. Org Chem Front 2022. [DOI: 10.1039/d2qo00763k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report a Rh(iii)-catalyzed C–H functionalization of indoles at the C4 position with alkylidenecyclopropanes (ACPs).
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Affiliation(s)
- Yan-Zhi Liu
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Yao-Fu Zeng
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan, 421001, China
| | - Bing Shu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, PR China
| | - Yi-Chuan Zheng
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Lin Xiao
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Shao-Yong Chen
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Jia-Lin Song
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xuanxuan Zhang
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Shang-Shi Zhang
- Center for Drug Research and Development, Guangdong Pharmaceutical University, Guangzhou, 510006, China
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Gu H, Jin X, Li J, Li H, Liu J. Recent Progress in Transition Metal-Catalyzed C—H Bond Activation of N-Aryl Phthalazinones. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202204056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
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