1
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Fan D, Wang D, Zhang J, Fu X, Yan X, Wang D, Qin A, Han T, Tang BZ. Cobalt-Catalyzed Cascade C-H Activation/Annulation Polymerizations toward Diversified and Multifunctional Sulfur-Containing Fused Heterocyclic Polymers. J Am Chem Soc 2024; 146:17270-17284. [PMID: 38863213 DOI: 10.1021/jacs.4c03889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Transition-metal-catalyzed C-H activation has greatly benefited the synthesis and development of functional polymer materials, and the construction of multifunctional fused (hetero)cyclic polymers via novel C-H activation-based polyannulations has emerged as a charming but challenging area in recent years. Herein, we report the first cobalt(III)-catalyzed cascade C-H activation/annulation polymerization (CAAP) approach that can efficiently transform readily available aryl thioamides and internal diynes into multifunctional sulfur-containing fused heterocyclic (SFH) polymers. Within merely 3 h, a series of SFH polymers bearing complex and multisubstituted S,N-doped polycyclic units are facilely and efficiently produced with high molecular weights (absolute Mn up to 220400) in excellent yields (up to 99%), which are hard to achieve by traditional methods. The intermediate-terminated SFH polymer can be used as a reactive macromonomer to controllably extend or modify polymer main chains. The structural diversity can be further enriched through facile S-oxidation and N-methylation reactions of the SFH polymers. Benefiting from the unique structures, the obtained polymers exhibit excellent solution processability, high thermal and morphological stability, efficient and readily tunable aggregate-state fluorescence, stimuli-responsive properties, and high and UV-modulatable refractive indices of up to 1.8464 at 632.8 nm. These properties allow the SFH polymers to be potentially applied in diverse fields, including metal ion detection, photodynamic killing of cancer cells, fluorescent photopatterning, and gradient-index optical materials.
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Affiliation(s)
- Dongyang Fan
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Deliang Wang
- Department of Materials Chemistry, Huzhou University, Huzhou, Zhejiang 313000, China
| | - Jie Zhang
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
| | - Xinyao Fu
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
| | - Xueke Yan
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Dong Wang
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Anjun Qin
- State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, South China University of Technology, Guangzhou 510640, China
| | - Ting Han
- Center for AIE Research, Shenzhen Key Laboratory of Polymer Science and Technology, Guangdong Research Center for Interfacial Engineering of Functional Materials, Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, College of Materials Science and Engineering, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Ben Zhong Tang
- School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong 518172, China
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2
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Sau S, Mukherjee K, Kondalarao K, Gandon V, Sahoo AK. Probing Chiral Sulfoximine Auxiliaries in Ru(II)-Catalyzed One-Pot Asymmetric C-H Hydroarylation and Annulations with Alkynes. Org Lett 2023; 25:7667-7672. [PMID: 37844260 DOI: 10.1021/acs.orglett.3c02969] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Developed herein is a chiral sulfoximine-enabled Ru(II)-catalyzed asymmetric C-H activation/functionalization involving intramolecular hydroarylation and functionalization/annulation of alkynes. This process constructs dihydrobenzofuran- or indoline-fused isoquinolinones having a tertiary or quaternary stereocenter with good yields and enantioselectivities (up to 97:3 enantiomeric ratio). The chiral sulfoxide precursor used in synthesizing the enantiopure sulfoximines is spontaneously eliminated during the reaction. It can be recovered without losing enantiopurity (∼99% enantiomeric excess) and reused.
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Affiliation(s)
- Somratan Sau
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Kallol Mukherjee
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Koneti Kondalarao
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana 500046, India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay, 91405 Orsay, France
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana 500046, India
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3
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Kondalarao K, Sau S, Sahoo AK. Sulfoximine Assisted C-H Activation and Annulation via Vinylene Transfer: Access to Unsubstituted Benzothiazines. Molecules 2023; 28:5014. [PMID: 37446676 PMCID: PMC10343390 DOI: 10.3390/molecules28135014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/14/2023] [Accepted: 06/17/2023] [Indexed: 07/15/2023] Open
Abstract
In this study, we report the synthesis of unsubstituted 1,2-benzothiazines through a redox-neutral Rh(III)-catalyzed C-H activation and [4+2]-annulation of S-aryl sulfoximines with vinylene carbonate. Notably, the introduction of an N-protected amino acid ligand significantly enhances the reaction rate. The key aspect of this redox-neutral process is the utilization of vinylene carbonate as an oxidizing acetylene surrogate and an efficient vinylene transfer agent. This vinylene carbonate enables the cyclization with the sulfoximine motifs, successfully forming a diverse array of 1,2-benzothiazine derivatives in moderate to good yields. Importantly, this study highlights the potential of Rh(III)-catalyzed C-H activation and [4+2]-annulation reactions for the synthesis of optically pure 1,2-benzothiazines with high enantiomeric purity.
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Affiliation(s)
| | | | - Akhila K. Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India; (K.K.); (S.S.)
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4
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Shu H, Guo M, Wang M, Fan S, Zhou M, Xu L, Rao Y, Osuka A, Song J. Rhodium-Catalyzed [5 + 2] Annulation of Pyrrole Appended BODIPYs: Access to Azepine-Fused BODIPYs. Org Lett 2023; 25:1817-1822. [PMID: 36920165 DOI: 10.1021/acs.orglett.3c00173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Rhodium-catalyzed C-H/N-H [5 + 2] annulations of 8-(pyrrol-2-yl)-appended boron-complexed dipyrromethenes (BODIPYs) with internal alkynes have been established to afford a series of azepine-fused BODIPYs with good yields and excellent regioselectivity, in which the pyrrol-2-yl unit serves as the directing group as a rare example. A RhI intermediate was obtained to indicate a RhI/RhIII catalytic process involved in this reaction. Importantly, the [5 + 2] C-H annulation is demonstrated as a concise strategy to change the optical properties of BODIPY.
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Affiliation(s)
- Hui Shu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Mengjie Guo
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Machongyang Wang
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Shuibo Fan
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Mingbo Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Ling Xu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Yutao Rao
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Atsuhiro Osuka
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Jianxin Song
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine (Ministry of Educational of China), Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
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5
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Sau S, Ghosh A, Shankar M, Gogoi MP, Sahoo AK. Cobalt-Catalyzed Thioamide Directed C(arene)-H Annulation with Ynamide: Regioselective Access to 2-Amidoindenones. Org Lett 2022; 24:9508-9513. [PMID: 36538762 DOI: 10.1021/acs.orglett.2c03989] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Demonstrated herein is an unprecedented thioamide-directed cobalt (Co)-catalyzed umpolung annulation of sulfoximines enabled aryl thioamide with ynamide for the synthesis of highly substituted 2-amidoindenones. The cyclization is regioselective, making β-C-C and α-C-CO bonds. The transformation is even successful on a gram scale, exhibiting broad scope with labile functional group tolerance and constructing 43 unusual 2-amidoindenones of structural diversity. Control experiments and mechanistic investigation validate the regioselectivity outcome in this transformation.
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Affiliation(s)
- Somratan Sau
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Arghadip Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
| | - Majji Shankar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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6
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Saha A, Ramesh E, Sahoo A. Brønsted Acid Promoted Sulfenylacyloxylation of Alkynes: Access to 4‐Sulfenylisocoumarins. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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7
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Wang Y, Xu X, Pang B, Hao L, Wu G, Ji Y. Ligand-Enabled Sequential C(sp 3)-H and C(sp 2)-H Diolefination Reaction via Palladium Catalyst. Org Lett 2022; 24:6734-6739. [PMID: 36073970 DOI: 10.1021/acs.orglett.2c02502] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Palladium-catalyzed sequential C(sp3)-H and C(sp2)-H bond diolefination reaction of o-toluidine has been realized for the first time using acetyl-protected aminoethyl phenyl thioether ligands. This novel reaction allows for preparation of the conjugated diene structure via an immediate second olefination on the basis of the first C(sp3)-H olefination in one pot. Various triflyl-protected anilines and acrylates were used as coupling partners elegantly. Furthermore, the unpurified diolefination products can be easily converted to tetrahydroquinoline derivatives.
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Affiliation(s)
- Yangyang Wang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Xiaobo Xu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Binghan Pang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Liqiang Hao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Gaorong Wu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
| | - Yafei Ji
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
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8
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Qi T, Fang N, Huang W, Chen J, Luo Y, Xia Y. Iron(II)-Catalyzed Nitrene Transfer Reaction of Sulfoxides with N-Acyloxyamides. Org Lett 2022; 24:5674-5678. [PMID: 35917256 DOI: 10.1021/acs.orglett.2c01990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An iron(II)-catalyzed nitrene transfer reaction of sulfoxides with N-acyloxyamides has been developed, leading to the efficient construction of N-acyl sulfoximines with high functional-group compatibility. The current catalytic transformation was carried out under an air atmosphere at ambient temperature and could be scaled up to gram scale with a catalyst loading of 1 mol %. Application of the methodology was demonstrated by facile C-H acetoxylation and olefination using the N-acyl sulfoximine as the directing group.
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Affiliation(s)
- Tianxing Qi
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Ning Fang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Weimin Huang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Jianhui Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yanshu Luo
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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9
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Hirata Y, Sekine D, Kato Y, Lin L, Kojima M, Yoshino T, Matsunaga S. Cobalt(III)/Chiral Carboxylic Acid-Catalyzed Enantioselective Synthesis of Benzothiadiazine-1-oxides via C-H Activation. Angew Chem Int Ed Engl 2022; 61:e202205341. [PMID: 35491238 DOI: 10.1002/anie.202205341] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 12/11/2022]
Abstract
Among sulfoximine derivatives containing a chiral sulfur center, benzothiadiazine-1-oxides are important for applications in medicinal chemistry. Here, we report that the combination of an achiral cobalt(III) catalyst and a pseudo-C2 -symmetric H8 -binaphthyl chiral carboxylic acid enables the asymmetric synthesis of benzothiadiazine-1-oxides from sulfoximines and dioxazolones via enantioselective C-H bond cleavage. With the optimized protocol, benzothiadiazine-1-oxides with several functional groups can be accessed with high enantioselectivity.
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Affiliation(s)
- Yuki Hirata
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan
| | - Daichi Sekine
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan
| | - Yoshimi Kato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan
| | - Luqing Lin
- Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian, 116024, P. R. China.,Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan.,Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan.,Global Station for Biosurfaces and Drug Discovery, Hokkaido University, Kita-ku, Sapporo, 060-0812, Japan
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10
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Sarkar S, Samanta R. Weakly Coordinating tert-Amide-Assisted Ru(II)-Catalyzed Synthesis of Azacoumestans via Migratory Insertion of Quinoid Carbene: Application in the Total Synthesis of Isolamellarins. Org Lett 2022; 24:4536-4541. [PMID: 35735263 DOI: 10.1021/acs.orglett.2c01556] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A weakly coordinating tert-amide-directed straightforward method was developed for the synthesis of azacoumestans using the corresponding azaheterocycle derivatives and diazonaphthoquinones under cheap Ru(II)-catalyzed conditions. The reaction proceeds via migratory insertion of quinoid carbene and subsequent Brønstead acid-mediated cyclization. The optimized C2-selective method offered a wide scope of important azaheterocycles. Bioactive natural products like isolamellarins A and B were synthesized via the developed protocol. Preliminary mechanistic studies highlighted the probable mechanistic pathway.
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Affiliation(s)
- Souradip Sarkar
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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11
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Hirata Y, Sekine D, Kato Y, Lin L, Kojima M, Yoshino T, Matsunaga S. Cobalt(III)/Chiral Carboxylic Acid‐Catalyzed Enantioselective Synthesis of Benzothiadiazine‐1‐oxides via C−H Activation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuki Hirata
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku, Sapporo 060-0812 Japan
| | - Daichi Sekine
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku, Sapporo 060-0812 Japan
| | - Yoshimi Kato
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku, Sapporo 060-0812 Japan
| | - Luqing Lin
- Zhang Dayu School of Chemistry Dalian University of Technology Dalian 116024 P. R. China
- Global Station for Biosurfaces and Drug Discovery Hokkaido University Kita-ku, Sapporo 060-0812 Japan
| | - Masahiro Kojima
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku, Sapporo 060-0812 Japan
| | - Tatsuhiko Yoshino
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku, Sapporo 060-0812 Japan
- Global Station for Biosurfaces and Drug Discovery Hokkaido University Kita-ku, Sapporo 060-0812 Japan
| | - Shigeki Matsunaga
- Faculty of Pharmaceutical Sciences Hokkaido University Kita-ku, Sapporo 060-0812 Japan
- Global Station for Biosurfaces and Drug Discovery Hokkaido University Kita-ku, Sapporo 060-0812 Japan
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12
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Michikita R, Usuki Y, Satoh T. Construction of Pyrrolocoumarin Cores through Double C‐H Annulation Cascade. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ryudai Michikita
- Osaka Shiritsu Daigaku: Osaka Koritsu Daigaku Department of Chemistry Osaka JAPAN
| | - Yoshinosuke Usuki
- Osaka City University: Osaka Koritsu Daigaku Department of Chemistry Osaka JAPAN
| | - Tetsuya Satoh
- Osaka Shiritsu Daigaku Chemistry 3-3-138 Sugimoto, Sumiyoshi-ku 558-8585 Osaka JAPAN
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13
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Saha A, Shankar M, Sau S, Sahoo AK. Multiple annulations of inert C(sp 2)-H bonds with alkynes. Chem Commun (Camb) 2022; 58:4561-4587. [PMID: 35303048 DOI: 10.1039/d2cc00172a] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Transition-metal catalyzed directing group (DG) assisted annulation of inert C-H bonds leads to the formation of complex molecular frameworks from readily accessible substrates. Thus, multiple annulation of less functionalized substrates with unsaturated species leads to the construction of structurally diverse fused poly(hetero)cycles. The directed inert C(arene)-H bond activation and the mode of TM-migration in this process could enabled obatining L-type [involves DG heteroatom, o-C(arene)-H bond, and C(arene)-H bond of aryl-motif in alkyne], Y-type [involves two heteroatoms of the DG and o-,o'-C(arene)-H bonds], and B-type [involves o-C(arene)-H bond and m-C(arene)-H bond] π-extended annulation products. The coordination preference of the DG heteroatom makes the transformation chemo- and regio-selective. This article underlines the conceptual development of unsymmetrical multiple annulation of arene C(sp2)-H bonds with alkynes, which is exceedingly appealing and highly important.
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Affiliation(s)
- Arijit Saha
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
| | - Majji Shankar
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
| | - Somratan Sau
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad, Telangana - 500046, India.
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14
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Yin C, Li L, Yu C. Rh(III)-catalyzed C-H annulation of sulfoxonium ylides with iodonium ylides towards isocoumarins. Org Biomol Chem 2022; 20:1112-1116. [PMID: 35040469 DOI: 10.1039/d1ob02273c] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The direct synthesis of isocoumarin skeletons has been realized through the Rh(III)-catalyzed [3 + 3] annulation of sulfoxonium ylides with iodonium carbenes. The synthetic protocol was constructed efficiently with broad functional group tolerance and mild reaction conditions. This reaction can be formally viewed as the result of C-H activation, carbene insertion and nucleophilic addition processes. Furthermore, the further conversions of the product and gram-scale reactions were also demonstrate to support the effectiveness of the synthesis protocol.
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Affiliation(s)
- Chuanliu Yin
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Lianghao Li
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
| | - Chuanming Yu
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, 310014, P. R. China.
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15
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Sahu SK, Choudhury P, Behera PK, Bisoyi T, Sahu RR, Bisoyi A, Gorantla KR, Mallik BS, Mohapatra M, Rout L. An oxygen-bridged bimetallic [Cu–O–Se] catalyst for Sonogashira cross-coupling. NEW J CHEM 2022. [DOI: 10.1039/d1nj04485k] [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
Oxygen bridged bimetallic CuSeO3·2H2O catalyst is used for Sonogashira cross-coupling under ligand free condition. Catalyst is free from palladium up to 0.2 ppm.
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Affiliation(s)
| | | | | | - Tanmayee Bisoyi
- Department of Chemistry, Berhampur University, Odisha-760007, India
| | | | - Abinash Bisoyi
- Department of Chemistry, Berhampur University, Odisha-760007, India
| | | | - Bhabani S. Mallik
- Department of Chemistry, IIT Hydrabad, Sangareddy, Medak-502285, Telangana, India
| | - Manoj Mohapatra
- Homi Bhaba National Institute, Anushakti Nagar, Bhaba Atomic Research Centre, Bombay-400085, India
| | - Laxmidhar Rout
- Department of Chemistry, Berhampur University, Odisha-760007, India
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16
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Jin T, Suzuki S, Ho HE, Matsuyama H, Kawata M, Terada M. Pd-Catalyzed Indolization/ peri-C-H Annulation/ N-Dealkylation Cascade to Cyclopenta-Fused Acenaphtho[1,2- b]indole Scaffold. Org Lett 2021; 23:9431-9435. [PMID: 34851130 DOI: 10.1021/acs.orglett.1c03575] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel Pd-catalyzed cascade reaction of N,N-dialkyl-substituted o-alkynylanilines involving an indolization/peri-C-H annulation/N-dealkylation sequence has been developed to construct a cyclopenta-fused acenaphtho[1,2-b]indole (ANI) scaffold. A variety of aromatic hydrocarbons having a peri-C-H bond at the alkynyl terminus, such as naphthalene, phenanthrene, pyrene, and fluoranthene, were employed, affording the corresponding π-extended ANI derivatives. The ANI molecules showed relatively narrow energy gaps by increasing HOMOs and lowering LUMOs, implying their potential applications as π-segments in low-band-gap materials.
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Affiliation(s)
- Tienan Jin
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Shin Suzuki
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Hon Eong Ho
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Hidenori Matsuyama
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Masaki Kawata
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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17
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Andresini M, Tota A, Degennaro L, Bull JA, Luisi R. Synthesis and Transformations of NH-Sulfoximines. Chemistry 2021; 27:17293-17321. [PMID: 34519376 PMCID: PMC9291533 DOI: 10.1002/chem.202102619] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Indexed: 11/17/2022]
Abstract
Recent years have seen a marked increase in the occurrence of sulfoximines in the chemical sciences, often presented as valuable motifs for medicinal chemistry. This has been prompted by both pioneering works taking sulfoximine containing compounds into clinical trials and the concurrent development of powerful synthetic methods. This review covers recent developments in the synthesis of sulfoximines concentrating on developments since 2015. This includes extensive developments in both S-N and S-C bond formations. Flow chemistry processes for sulfoximine synthesis are also covered. Finally, subsequent transformations of sulfoximines, particularly in N-functionalization are reviewed, including N-S, N-P, N-C bond forming processes and cyclization reactions.
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Affiliation(s)
- Michael Andresini
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - Arianna Tota
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - Leonardo Degennaro
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - James A. Bull
- Department of Chemistry Imperial College LondonMolecular Sciences Research Hub White City Campus, Wood LaneLondonW12 0BZUK
| | - Renzo Luisi
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
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18
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Rhodium-Catalyzed C-H Annulation of Free Anilines with Vinylene Carbonate as a Bifunctional Synthon. Org Lett 2021; 23:8910-8915. [PMID: 34757750 DOI: 10.1021/acs.orglett.1c03404] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Chemical transformation with vinylene carbonate as an emerging synthetic unit has recently attracted considerable attention. This report is a novel conversion pattern with vinylene carbonate, in which such a vibrant reagent unprecedentedly acts as a difunctional coupling partner to complete the C-H annulation of free anilines. From commercially available substrates, this protocol leads to the rapid construction of synthetically versatile 2-methylquinoline derivatives (43 examples) with excellent functionality tolerance.
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19
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Mukherjee K, Grimblat N, Sau S, Ghosh K, Shankar M, Gandon V, Sahoo AK. Kinetic resolution of sulfur-stereogenic sulfoximines by Pd(ii)-MPAA catalyzed C-H arylation and olefination. Chem Sci 2021; 12:14863-14870. [PMID: 34820102 PMCID: PMC8597855 DOI: 10.1039/d1sc04299h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/20/2021] [Indexed: 01/01/2023] Open
Abstract
A direct Pd(ii)-catalyzed kinetic resolution of heteroaryl-enabled sulfoximines through an ortho-C-H alkenylation/arylation of arenes has been developed. The coordination of the sulfoximine pyridyl-motif and the chiral amino acid MPAA ligand to the Pd(ii)-catalyst controls the enantio-discriminating C(aryl)-H activation. This method provides access to a wide range of enantiomerically enriched unreacted aryl-pyridyl-sulfoximine precursors and C(aryl)-H alkenylation/arylation products in good yields with high enantioselectivity (up to >99% ee), and selectivity factor up to >200. The coordination preference of the directing group, ligand effect, geometry constraints, and the transient six-membered concerted-metalation-deprotonation species dictate the stereoselectivity; DFT studies validate this hypothesis.
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Affiliation(s)
- Kallol Mukherjee
- School of Chemistry, University of Hyderabad Hyderabad 500046 India
| | - Nicolas Grimblat
- Nicolas Grimblat and Prof. Vincent Gandon, Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay Bâtiment 420 91405 Orsay Cedex France
| | - Somratan Sau
- School of Chemistry, University of Hyderabad Hyderabad 500046 India
| | - Koushik Ghosh
- School of Chemistry, University of Hyderabad Hyderabad 500046 India
| | - Majji Shankar
- School of Chemistry, University of Hyderabad Hyderabad 500046 India
| | - Vincent Gandon
- Nicolas Grimblat and Prof. Vincent Gandon, Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay Bâtiment 420 91405 Orsay Cedex France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau Cedex France
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad Hyderabad 500046 India
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20
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Huang X, Shi Y, Wang Y, Jiao J, Tang Y, Li J, Xu S, Li Y. Synthesis of Indole-Fused Oxepines via C-H Activation Initiated Diastereoselective [5 + 2] Annulation of Indoles with 1,6-Enynes. Org Lett 2021; 23:8365-8369. [PMID: 34652931 DOI: 10.1021/acs.orglett.1c03106] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A rhodium-catalyzed diastereoselective formal [5 + 2] annulation of indoles with cyclohexadienone-containing 1,6-enynes has been established via indole 2,3-difunctionalization. The reaction, probably proceeding through tandem indole C2-H alkenylation and intramolecular Friedel-Crafts alkylation relay, provides rapid construction of indole-fused oxepines in good to excellent yields with a broad substrate scope. This method also features concomitant construction of cis-hydrobenzo[b] oxepine scaffolds, a core unit found in numerous natural products of important biological activities.
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Affiliation(s)
- Xiaoli Huang
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Yan Shi
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Yongzhuang Wang
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Jiao Jiao
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Yuhai Tang
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Jing Li
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Silong Xu
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Yang Li
- Department of Material Chemistry, School of Chemistry and Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
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21
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Shankar M, Saha A, Ghosh A, Sau S, Sahoo AK. Sulfur and Nitrogen Modulated One-Pot Double Annulation of Arenes. J Org Chem 2021; 86:14942-14955. [PMID: 34569230 DOI: 10.1021/acs.joc.1c01674] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The sulfur and nitrogen moieties of methylphenyl sulfoximine (MPS)-enabled aryl thioamides are independently involved in annulation with unactivated alkynes to construct the unusual 6,6-fused thiopyranoisoquinoline skeletons. The MPS directing group plays a vital role in making this unprecedented Ru-catalyzed one-pot double annulation of aryl thioamides with alkynes chemo- and regioselective. Both the o,o'-C-H bonds of the aryl motif are sequentially functionalized to form four bonds [C-C, C-S and C-C, C-N] in a single operation by overcoming the undisputed challenges, viz. the "S" poisoning effect on the transition-metal catalyst and the susceptibility of S to oxidation. The novel isothiochromene-1-one skeletons are successfully constructed, as the annulation is initiated with S in preference over the N motif of thioamides with alkynes. The preliminary photophysical properties of the thiopyrano-isoquinoline derivatives are also discussed.
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Affiliation(s)
- Majji Shankar
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| | - Arijit Saha
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| | - Arghadip Ghosh
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| | - Somratan Sau
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad, Hyderabad-500046, India
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22
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Han SH, Lee K, Noh HC, Lee PH. Palladium(II)‐Catalyzed
N
‐Carbonylative Cross‐Coupling Reaction of Sulfoximines with Aryl, Heteroaryl, and Alkenyl Halides Using Tungsten Hexacarbonyl as Carbon Monoxide Source. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sang Hoon Han
- Department of Chemistry Kangwon National University Chuncheon 24341 Republic of Korea
| | - Kyungsup Lee
- Department of Chemistry Kangwon National University Chuncheon 24341 Republic of Korea
| | - Hee Chan Noh
- Department of Chemistry Kangwon National University Chuncheon 24341 Republic of Korea
| | - Phil Ho Lee
- Department of Chemistry Kangwon National University Chuncheon 24341 Republic of Korea
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23
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Zhou T, Qian PF, Li JY, Zhou YB, Li HC, Chen HY, Shi BF. Efficient Synthesis of Sulfur-Stereogenic Sulfoximines via Ru(II)-Catalyzed Enantioselective C-H Functionalization Enabled by Chiral Carboxylic Acid. J Am Chem Soc 2021; 143:6810-6816. [PMID: 33909436 DOI: 10.1021/jacs.1c03111] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ru(II)-catalyzed enantioselective C-H functionalization involving an enantiodetermining C-H cleavage step remains undeveloped. Here we describe a Ru(II)-catalyzed enantioselective C-H activation/annulation of sulfoximines with α-carbonyl sulfoxonium ylides using a novel class of chiral binaphthyl monocarboxylic acids as chiral ligands, which can be easily and modularly prepared from 1,1'-binaphthyl-2,2'-dicarboxylic acid. A broad range of sulfur-stereogenic sulfoximines were prepared in high yields with excellent enantioselectivities (up to 99% yield and 99% ee) via desymmetrization, kinetic resolution, and parallel kinetic resolution. Furthermore, the resolution products can be easily transformed to chiral sulfoxides and key intermediates for kinase inhibitors.
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Affiliation(s)
- Tao Zhou
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Pu-Fan Qian
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Jun-Yi Li
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yi-Bo Zhou
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Hao-Chen Li
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Hao-Yu Chen
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Bing-Feng Shi
- Center of Chemistry for Frontier Technologies, Department of Chemistry, Zhejiang University, Hangzhou 310027, China
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24
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Shankar M, Saha A, Sau S, Ghosh A, Gandon V, Sahoo AK. Harnessing sulfur and nitrogen in the cobalt(iii)-catalyzed unsymmetrical double annulation of thioamides: probing the origin of chemo- and regio-selectivity. Chem Sci 2021; 12:6393-6405. [PMID: 34084439 PMCID: PMC8115082 DOI: 10.1039/d1sc00765c] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 03/19/2021] [Indexed: 12/27/2022] Open
Abstract
An unconventional cobalt(iii)-catalyzed one-pot domino double annulation of aryl thioamides with unactivated alkynes is presented. Sulfur (S), nitrogen (N), and o,o'-C-H bonds of aryl thioamides are involved in this reaction, enabling access to rare 6,6-fused thiopyrano-isoquinoline derivatives. A reverse 'S' coordination over a more conventional 'N' coordination of thioamides to the Co-catalyst specifically regulates the formation of four [C-C and C-S at first and then C-N and C-C] bonds in a single operation, a concept which is uncovered for the first time. The power of the N-masked methyl phenyl sulfoximine (MPS) directing group in this annulation sequence is established. The transformation is successfully developed, building a novel chemical space of structural diversity (56 examples). In addition, the late-stage annulation of biologically relevant motifs and drug candidates is disclosed (17 examples). The preliminary photophysical properties of thiopyrano-isoquinoline derivatives are discussed. Density functional theory (DFT) studies authenticate the participation of a unique 6π-electrocyclization of a 7-membered S-chelated cobaltacycle in the annulation process.
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Affiliation(s)
- Majji Shankar
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Arijit Saha
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Somratan Sau
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Arghadip Ghosh
- School of Chemistry, University of Hyderabad Hyderabad India
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS UMR 8182, Université Paris-Saclay Bâtiment 420 91405 Orsay cedex France
- Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris route de Saclay 91128 Palaiseau cedex France
| | - Akhila K Sahoo
- School of Chemistry, University of Hyderabad Hyderabad India
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25
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Kuo C, Rao NS, Patil PB, Chiang T, Kavala V, Yao C. Synthesis of Perinaphthenones
via
BF
3
.
Et
2
O Mediated One‐Pot Cascade 4,5‐Annulation Reactions of 1‐Naphthols and Ynones. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001558] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Chun‐Wei Kuo
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei 116, R.O.C. Taiwan
| | - Naidu Sambasiva Rao
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei 116, R.O.C. Taiwan
| | - Prakash Bhimrao Patil
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei 116, R.O.C. Taiwan
| | - Ting‐Ta Chiang
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei 116, R.O.C. Taiwan
| | - Veerababurao Kavala
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei 116, R.O.C. Taiwan
| | - Ching‐Fa Yao
- Department of Chemistry National Taiwan Normal University 88, Sec. 4, Ting-Zhou Road Taipei 116, R.O.C. Taiwan
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26
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Cao XT, Wei SN, Sun HT, Li M, Zheng ZL, Wang G. Iridium-catalyzed regioselective C–H sulfonamidation of 1,2,4-thiadiazoles with sulfonyl azides in water. RSC Adv 2021; 11:22000-22004. [PMID: 35480792 PMCID: PMC9034132 DOI: 10.1039/d1ra04450h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 06/14/2021] [Indexed: 12/20/2022] Open
Abstract
We have developed a regioselective C–N cross-coupling of 1,2,4-thiadiazoles with sulfonyl azides through iridium catalysis in water. This method tactically linked the 1,2,4-thiadiazoles and sulfonamides together, and the novel molecules increased the diversity of 1,2,4-thiadiazoles which may have potential applications. We have developed a regioselective C–N cross-coupling of 1,2,4-thiadiazoles with sulfonyl azides through iridium catalysis in water.![]()
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Affiliation(s)
- Xian-Ting Cao
- College of Medical Engineering
- Key Laboratory for Medical Functional Nanomaterials
- Jining Medical University
- Jining
- China
| | - Su-Ning Wei
- College of Medical Engineering
- Key Laboratory for Medical Functional Nanomaterials
- Jining Medical University
- Jining
- China
| | - Hao-Tian Sun
- College of Medical Engineering
- Key Laboratory for Medical Functional Nanomaterials
- Jining Medical University
- Jining
- China
| | - Meng Li
- College of Medical Engineering
- Key Laboratory for Medical Functional Nanomaterials
- Jining Medical University
- Jining
- China
| | - Zuo-Ling Zheng
- College of Medical Engineering
- Key Laboratory for Medical Functional Nanomaterials
- Jining Medical University
- Jining
- China
| | - Guannan Wang
- College of Medical Engineering
- Key Laboratory for Medical Functional Nanomaterials
- Jining Medical University
- Jining
- China
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