1
|
Datta A, Jain N. Dual ipso-hydroxylation and para-C-H chalcogenation of arylboronic acids using an NDI photocatalyst in visible light. Chem Commun (Camb) 2025. [PMID: 40370042 DOI: 10.1039/d5cc01389e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2025]
Abstract
We report a dual ipso-hydroxylation and para-C-H chalcogenation of arylboronic acids using NDI-PC as a photocatalyst in visible light. para-Selective C-H thiocyanation, selenocyanation, thiophenylation, and selenophenylation of phenols, generated in situ from arylboronic acids, has been achieved via a photoredox process in the presence of air as the oxidant. This method is transition-metal free, sustainable, and gives the products in moderate to high yields at room temperature.
Collapse
Affiliation(s)
- Anirban Datta
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Nidhi Jain
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| |
Collapse
|
2
|
Kumar R, Deepak, Jain N. 1O 2 and Base Assisted Oxidative Conversion of β-Enaminoesters to α-Acyloxy-β-ketoesters under Visible Light Irradiation. J Org Chem 2024; 89:14472-14482. [PMID: 39297950 DOI: 10.1021/acs.joc.4c01994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2024]
Abstract
Singlet oxygen (1O2) and base assisted conversion of β-enaminoesters to α-acyloxy-β-ketoesters is demonstrated under visible light irradiation. The reaction involves formation of an imine intermediate via ene-type pathway initiated by 1O2 followed by base promoted dimerization and hydrolysis steps. The method is mild, environmentally friendly, requires air as the oxidant, and gives the products in moderate to high yields.
Collapse
Affiliation(s)
- Rohit Kumar
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Deepak
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Nidhi Jain
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India
| |
Collapse
|
3
|
Datta A, Ritu, Kumar S, Chorol S, Mukhopadhyay P, Jain N. Oxidative Organic Transformations Photocatalyzed by NDI in Visible Light. Org Lett 2024; 26:7357-7362. [PMID: 39186013 DOI: 10.1021/acs.orglett.4c02558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/27/2024]
Abstract
In this work, we report the synthesis and photocatalytic properties of N,N-bis(n-hexyl)-2-bromo-6-(n-hexylamino)-1,4,5,8-naphthalenetetracarboxylic diimide photocatalyst, NDI-PC, in visible light. In the presence of air or oxidant, NDI-PC efficiently enables multiple photooxygenations of isoquinolines, thiocyanation of phenylimidazopyridines, functionalization of quinolinones by allowing regioselective installation of an SCN, SeCN, SPh, SePh, Cl, Br, or I group at the C-3 position, and isomerization of alkenes. Mechanistic investigations suggest an oxidative photoredox process for oxygenation and C-H functionalization, while isomerization is believed to proceed through a photosensitization pathway.
Collapse
Affiliation(s)
- Anirban Datta
- Department of Chemistry, Indian Institution of Technology Delhi, Delhi-110016, India
| | - Ritu
- Department of Chemistry, Indian Institution of Technology Delhi, Delhi-110016, India
| | - Sharvan Kumar
- Department of Chemistry, Indian Institution of Technology Delhi, Delhi-110016, India
| | - Sonam Chorol
- School of Physical Sciences, Jawaharlal Nehru University, Delhi-110067, India
| | - Pritam Mukhopadhyay
- School of Physical Sciences, Jawaharlal Nehru University, Delhi-110067, India
| | - Nidhi Jain
- Department of Chemistry, Indian Institution of Technology Delhi, Delhi-110016, India
| |
Collapse
|
4
|
Harsha, Kumar R, Jain N. 1O 2 mediated synthesis of carbonyl substituted quinoline-2,4(1 H,3 H)-diones in visible light: 4CzIPN as a reusable photocatalyst. Chem Commun (Camb) 2024; 60:5646-5649. [PMID: 38725369 DOI: 10.1039/d4cc00887a] [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
A mild and eco-friendly method for the construction of carbonyl-containing quinoline-2,4(1H,3H)-diones has been developed in the presence of O2, photocatalyzed by reusable 4CzIPN in visible light. The method is transition-metal free, cost-effective, sustainable and gives the products in moderate to high yields.
Collapse
Affiliation(s)
- Harsha
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Rohit Kumar
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| | - Nidhi Jain
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India.
| |
Collapse
|
5
|
Kumar R, Grover N, Jain N. 1O 2 Mediated Conversion of β-Enaminonitriles to α-Keto Amides Photosensitized by Recyclable H 2TPP in Visible Light. J Org Chem 2024; 89:4722-4732. [PMID: 38502937 DOI: 10.1021/acs.joc.3c02965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
We report a one-step approach for the conversion of β-enaminonitriles to synthetically versatile α-keto amides in moderate to high yields under visible light irradiation photosensitized by porphyrins. The method is mild, cost-effective, and sustainable and requires air as the sole reagent/oxidant. The reaction is believed to proceed via an ene-type pathway initiated by 1O2, followed by dehydration, imine hydrolysis, and subsequent nucleophilic substitution of the cyanide group by amine. The method offers a broad substrate scope and has also been extended for synthesis of α-keto esters with aliphatic alcohols as nucleophiles. The porphyrin recovered after the reaction can be reused multiple times.
Collapse
Affiliation(s)
- Rohit Kumar
- Department of Chemistry, Indian Institute of Technology, New Delhi-110016, India
| | - Nitika Grover
- Department of Chemistry, Indian Institute of Technology, New Delhi-110016, India
| | - Nidhi Jain
- Department of Chemistry, Indian Institute of Technology, New Delhi-110016, India
| |
Collapse
|
6
|
Hu M, Zhang S, Qin C, Nie H, Xiong Z, Shi X, Zhao Y, Li M, Wang S, Ji F, Jiang G. Selective Electrochemical Halogenation of Functionalized Quinolone. J Org Chem 2023; 88:12958-12970. [PMID: 37620989 DOI: 10.1021/acs.joc.3c00876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/26/2023]
Abstract
This work describes an effective C3-H halogenation of quinoline-4(1H)-ones under electrochemical conditions, in which potassium halides serve as both halogenating agents and electrolytes. The protocol provides expedient access to different halogenated quinoline-4(1H)-ones with unique regioselectivity, broad substrate scope, and gram-scale synthesis employing convenient, environmentally friendly electrolysis, in an undivided cell. Mechanism studies have shown that halogen radicals can promote the activation of N-H bonds in quinolones.
Collapse
Affiliation(s)
- Meiqian Hu
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Shuai Zhang
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Changsheng Qin
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Hongsheng Nie
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Zhicheng Xiong
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Xiaoyu Shi
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Yumiao Zhao
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Mingzhe Li
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Shoucai Wang
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Fanghua Ji
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| | - Guangbin Jiang
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China
| |
Collapse
|
7
|
Kumar R, Jain VK, Jain N. Photoredox Hydroxy-arylation of the Terminal Double Bond of N-Substituted 3-Methyleneisoindolin-1-ones in Visible Light. J Org Chem 2022; 87:11939-11946. [PMID: 36041118 DOI: 10.1021/acs.joc.2c00607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Mild and efficient ruthenium-catalyzed hydroxy-arylation of the terminal double bond of N-substituted 3-methyleneisoindolin-1-ones is described. The reaction takes place with aryl diazonium salt as the arylating reagent and water as the hydroxyl source in visible light at ambient temperature. The strategy entails vicinal difunctionalization of alkene and enables construction of 3-benzyl-3-hydroxyisoindolin-1-one heterocyclic scaffolds in moderate to good yields. C-C and C-O bonds are formed in one pot without any external additive and oxidant through an in situ generation of a carbocation intermediate in green light.
Collapse
Affiliation(s)
- Rohit Kumar
- Department of Chemistry, Indian Institute of Technology, New Delhi 110016, India
| | - Vipin Kumar Jain
- Department of Chemistry, Indian Institute of Technology, New Delhi 110016, India
| | - Nidhi Jain
- Department of Chemistry, Indian Institute of Technology, New Delhi 110016, India
| |
Collapse
|
8
|
Xie W, Wang M, Yang S, Chen Y, Feng J, Huang Y. C-H chlorination of (hetero)anilines via photo/organo co-catalysis. Org Biomol Chem 2022; 20:5319-5324. [PMID: 35730736 DOI: 10.1039/d2ob00834c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chlorinated (hetero)anilines are a class of important structural motifs that are widely present in synthetic building blocks and pharmaceuticals. Despite recent advancements, direct aniline chlorination still suffers from ortho/para and mono/poly chlorination selectivity problems. Herein, we disclose a photo-redox and organo co-catalyzed chlorination method for anilines. This method has great substrate generality and excellent mono-chlorination selectivity. Another merit of this method is the late-stage modification of drug molecules, which would be useful in medicinal chemistry.
Collapse
Affiliation(s)
- Wuchen Xie
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, No. 24 Tongjiaxiang Road, Nanjing, 210009, P. R. China.
| | - Meng Wang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, No. 24 Tongjiaxiang Road, Nanjing, 210009, P. R. China.
| | - Siyu Yang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, No. 24 Tongjiaxiang Road, Nanjing, 210009, P. R. China.
| | - Yadong Chen
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, No. 24 Tongjiaxiang Road, Nanjing, 210009, P. R. China.
| | - Jie Feng
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, No. 24 Tongjiaxiang Road, Nanjing, 210009, P. R. China.
| | - Yatian Huang
- State Key Laboratory of Natural Medicines, Department of Organic Chemistry, China Pharmaceutical University, No. 24 Tongjiaxiang Road, Nanjing, 210009, P. R. China.
| |
Collapse
|
9
|
Chen JY, Li HX, Mu SY, Song HY, Wu ZL, Yang TB, Jiang J, He WM. Electrocatalytic three-component synthesis of 4-halopyrazoles with sodium halide as the halogen source. Org Biomol Chem 2022; 20:8501-8505. [DOI: 10.1039/d2ob01612e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The first example of the electrocatalytic multicomponent synthesis of 4-chloro/bromo/iodopyrazoles from hydrazines, acetylacetones and sodium halides under chemical oxidant- and external electrolyte-free conditions has been developed.
Collapse
Affiliation(s)
- Jin-Yang Chen
- Postdoctoral Mobile Station of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang 421001, China
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Hong-Xia Li
- Postdoctoral Mobile Station of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Si-Yu Mu
- Postdoctoral Mobile Station of Basic Medical Sciences, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Hai-Yang Song
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Zhi-Lin Wu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Tian-Bao Yang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Jun Jiang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Wei-Min He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| |
Collapse
|
10
|
Rajput S, Kaur R, Jain N. Pd and photoredox dual catalysis assisted decarboxylative ortho-benzoylation of N-phenyl-7-azaindoles. Org Biomol Chem 2022; 20:1453-1461. [DOI: 10.1039/d1ob02338a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Directing group assisted decarboxylative ortho-benzoylation of N-aryl-7-azaindoles with α-keto acids has been achieved by synergistic visible light promoted photoredox and palladium catalysis. The approach tenders rapid entry to aryl ketone...
Collapse
|
11
|
Yang F, Wang X, Zhao W, Yu F, Yu Z. Hypervalent Iodine(III)-Promoted C3-H Regioselective Halogenation of 4-Quinolones under Mild Conditions. ACS OMEGA 2021; 6:34044-34055. [PMID: 34926952 PMCID: PMC8675166 DOI: 10.1021/acsomega.1c05455] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 11/17/2021] [Indexed: 06/14/2023]
Abstract
A simple and practical protocol for the C3-H regioselective halogenation of 4-quinolones by the action of potassium halide salt and PIFA/PIDA in good to excellent yields was developed. The current approach provides feasible access to the diversity of C3-halgenated 4-quinolones at room temperature with high regioselectivity and good functional group tolerance, from which bioactive compounds can be easily constructed. Moreover, the current method featured eco-friendly, operational convenience and is suitable for halogenation in a gram scale of 4-quinolones in water without sacrificing yields.
Collapse
Affiliation(s)
- Fang Yang
- The
Hebei Key Laboratory of Analysis and Control of Zoonotic Pathogenic
Micro-organism, College of Life Science, Hebei Agriculture University, Baoding, Hebei 071001, People’s Republic of China
| | - Xiaoqing Wang
- Colleges
of Science, Hebei Agriculture University, Baoding, Hebei 071001, People’s Republic
of China
| | - Wenzhuo Zhao
- The
Hebei Key Laboratory of Analysis and Control of Zoonotic Pathogenic
Micro-organism, College of Life Science, Hebei Agriculture University, Baoding, Hebei 071001, People’s Republic of China
| | - Fei Yu
- The
Hebei Key Laboratory of Analysis and Control of Zoonotic Pathogenic
Micro-organism, College of Life Science, Hebei Agriculture University, Baoding, Hebei 071001, People’s Republic of China
| | - Zhengsen Yu
- The
Hebei Key Laboratory of Analysis and Control of Zoonotic Pathogenic
Micro-organism, College of Life Science, Hebei Agriculture University, Baoding, Hebei 071001, People’s Republic of China
| |
Collapse
|