201
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Wang J, Lv Y, Shang Y, Cui Z, Wang KH, Huang D, Hu Y. Research Progress of Reactions Participated by α-Hydroxy Ketones. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202203007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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202
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Luo H, Chen M, Tian F, He Y, Liu X, Li J. An Efficient Method for the Synthesis of N-Aryl Substituted C1-Functionalized 1,2,3,4-Tetrahydroisoquinolines. HETEROCYCLES 2022. [DOI: 10.3987/com-22-14697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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203
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Xie W, Chen X, Li Y, Lin J, Chen W, Shi J. Electrooxidative Annulation of Unsaturated Molecules via Directed C—H Activation. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202110028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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204
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Xi JM, Liao WW. Radical addition to the CC bond meets (1, n)-HAT: recent advances in the remote C(sp 3)–H or C(sp 2)–H functionalization of alkenes. Org Chem Front 2022. [DOI: 10.1039/d2qo00793b] [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
This review summarizes the recent development of remote C(sp3)–H bond or aldehydic C(sp2)–H functionalizations enabled by intermolecular radical addition to CC bond/(1,n)-HAT tandem sequences.
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Affiliation(s)
- Ji-Ming Xi
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
| | - Wei-Wei Liao
- Department of Organic Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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205
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Zhang Y, Chen Y, Guo M, Sun G, Que R, Cui R, Gao Y, Chen H. Direct C-H Functionalization of Tetrahydro-γ-Carbolines at α-Position. NEW J CHEM 2022. [DOI: 10.1039/d2nj00928e] [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
The direct C-H functionalization of tetrahydro-γ-carbolines (THγCs) at α-position has been presented. This mild and simple strategy allows coupling of THγCs with various anilines and indoles with satisfactory to excellent...
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206
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Bashir MA, Tang L, Li L, Yu H, Yao W, Wu G, Zhong F. Formal dual C(sp 2)–H cross-dehydrogenative C–O bond formation to construct highly functionalized diaryl ethers with O 2. Org Chem Front 2022. [DOI: 10.1039/d1qo01942b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A formal dual C(sp2)–H cross-dehydrogenative C–O bond formation reaction between phenols and naphthylamine derivatives to construct diaryl ethers has been developed under mild conditions.
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Affiliation(s)
- Muhammad Adnan Bashir
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Langyu Tang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Longjie Li
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Huaibin Yu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Weijun Yao
- Department of Chemistry, Zhejiang Sci-Tech University, China
| | - Guojiao Wu
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
| | - Fangrui Zhong
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), 1037 Luoyu Road, Wuhan 430074, China
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207
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Tomar R, Suwasia S, Choudhury AR, Venkataramani S, Babu SA. Azobenzene-based unnatural amino acid scaffolds via a Pd( ii)-catalyzed C(sp 3)–H arylation strategy. Chem Commun (Camb) 2022; 58:12967-12970. [DOI: 10.1039/d2cc04870a] [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
Azobenzene-based unnatural amino acid motifs were constructed via the Pd(ii)-catalyzed diastereoselective β-C(sp3)–H arylation and Mills azo coupling tactics.
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Affiliation(s)
- Radha Tomar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Sonam Suwasia
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Angshuman Roy Choudhury
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Sugumar Venkataramani
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
| | - Srinivasarao Arulananda Babu
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Manauli P.O. 140306, Mohali, Punjab, India
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208
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Majumder S, Ghosh S, Pyne P, Ghosh A, Ghosh D, Hajra A. Synthesis of Unsymmetrical Biheteroarenes via Dehydrogenative and Decarboxylative Coupling: a Decade Update. CHEM REC 2021; 22:e202100288. [PMID: 34970849 DOI: 10.1002/tcr.202100288] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/13/2021] [Accepted: 12/17/2021] [Indexed: 12/22/2022]
Abstract
The design and development of robust and efficient methods for installing one heterocycle with another is endowed as a ubiquitous and powerful synthetic strategy to access complex organic biheterocycles in recent days due to their pervasive applications in medicinal as well as material chemistry. This perspective presents an overview on the recent findings and developments for the synthesis of unsymmetrical biheteroarenes via dehydrogenative and decarboxylative couplings with literature coverage mainly extending from 2011 to 2021. For simplification of the readers, the article has been subcategorized based on the catalysts used in the reactions.
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Affiliation(s)
- Souvik Majumder
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Sumit Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Pranjal Pyne
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Anogh Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
| | - Debashis Ghosh
- Department of Chemistry, St. Joseph's College (Autonomous), Bangalore, 560027, Karnataka, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, India
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209
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Chen X, Liu H, Gao H, Li P, Miao T, Li H. Electrochemical Regioselective Cross-Dehydrogenative Coupling of Indoles with Xanthenes. J Org Chem 2021; 87:1056-1064. [PMID: 34964353 DOI: 10.1021/acs.joc.1c02346] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An electrochemical cross-dehydrogenative coupling of indoles with xanthenes has been established at room temperature. This coupling reaction could proceed in the absence of any catalyst or external oxidant, and generate the indole derivatives in moderate yields. Mechanistic experiments support that a radical pathway maybe involved in this reaction system.
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Affiliation(s)
- Xinyu Chen
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Hongqiang Liu
- China Synchem Technology Co., Ltd., Bengbu, Anhui 233000, P. R. China
| | - Hui Gao
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.,Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, P. R. China
| | - Pinhua Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Tao Miao
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Hongji Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education, School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
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210
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Pounder A, Tam W. Iron-catalyzed domino coupling reactions of π-systems. Beilstein J Org Chem 2021; 17:2848-2893. [PMID: 34956407 PMCID: PMC8685557 DOI: 10.3762/bjoc.17.196] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 11/24/2021] [Indexed: 12/26/2022] Open
Abstract
The development of environmentally benign, inexpensive, and earth-abundant metal catalysts is desirable from both an ecological and economic standpoint. Certainly, in the past couple decades, iron has become a key player in the development of sustainable coupling chemistry and has become an indispensable tool in organic synthesis. Over the last ten years, organic chemistry has witnessed substantial improvements in efficient synthesis because of domino reactions. These protocols are more atom-economic, produce less waste, and demand less time compared to a classical stepwise reaction. Although iron-catalyzed domino reactions require a mindset that differs from the more routine noble-metal, homogenous iron catalysis they bear the chance to enable coupling reactions that rival that of noble-metal-catalysis. This review provides an overview of iron-catalyzed domino coupling reactions of π-systems. The classifications and reactivity paradigms examined should assist readers and provide guidance for the design of novel domino reactions.
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Affiliation(s)
- Austin Pounder
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
| | - William Tam
- Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, Department of Chemistry, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
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211
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Deb ML, Saikia BS, Borpatra PJ, Baruah PK. Progress of metal‐free visible‐light‐driven a‐C‐H functionalization of tertiary amines: A decade journey. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100706] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | | | | | - Pranjal K. Baruah
- GUIST, Gauhati University Applied Sciences Gopinath Bordoloi Nagar 781014 Guwahati INDIA
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212
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Qiao J, Song Z, Huang C, Ci R, Liu Z, Chen B, Tung C, Wu L. Direct, Site‐Selective and Redox‐Neutral α‐C−H Bond Functionalization of Tetrahydrofurans via Quantum Dots Photocatalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202109849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Jia Qiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Zi‐Qi Song
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Cheng Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Rui‐Nan Ci
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Zan Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Chen‐Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Li‐Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences Chinese Academy of Sciences Beijing 100190 P. R. China
- School of Future Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
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213
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Mintz T, More NY, Gaster E, Pappo D. Iron-Catalyzed Oxidative Cross-Coupling of Phenols and Tyrosine Derivatives with 3-Alkyloxindoles. J Org Chem 2021; 86:18164-18178. [PMID: 34881564 DOI: 10.1021/acs.joc.1c02435] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, a novel iron-catalyzed oxidative cross-coupling reaction between phenols and 3-alkyloxindole derivatives is reported. The efficient method, which is based on the FeCl3 catalyst and the t-BuOOt-Bu oxidant in 1,2-dichloroethane at 70 °C, affords 3-alkyl-3-(hydroxyaryl)oxindole compounds with a high degree of selectivity. The generality of the conditions was proven by reacting various substituted phenols, naphthols, and tyrosine derivatives with 3-alkyloxindoles. To apply the chemistry for the conjugation of tyrosine-containing short peptides with oxindolylalanine (Oia) derivatives, the reaction conditions were modified [Fe(O2CCF3)3 catalyst, t-BuOOt-Bu, HFIP, 70 °C], and amino acids with acid-stable N-protecting groups were used.
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Affiliation(s)
- Tomer Mintz
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Nagnath Yadav More
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Eden Gaster
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Doron Pappo
- Department of Chemistry, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
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214
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Xu J, Cai H, Shen J, Shen C, Wu J, Zhang P, Liu X. Photo-Induced Cross-Dehydrogenative Alkylation of Heteroarenes with Alkanes under Aerobic Conditions. J Org Chem 2021; 86:17816-17832. [PMID: 34875167 DOI: 10.1021/acs.joc.1c02125] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a Minisci-type cross-dehydrogenative alkylation in an aerobic atmosphere using abundant and inexpensive cerium chloride as a photocatalyst and air as an oxidant. This photoreaction exhibits excellent tolerance to functional groups and is suitable for both heteroarene and alkane substrates under mild conditions, generating the corresponding products in moderate-to-good yields. Our method provides an alternative approach for the late-stage functionalization of valuable substrates.
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Affiliation(s)
- Jun Xu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Center for Functional Materials, National University of Singapore Suzhou Research Institute, Suzhou 215123, China
| | - Heng Cai
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jiabin Shen
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Chao Shen
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Jie Wu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Center for Functional Materials, National University of Singapore Suzhou Research Institute, Suzhou 215123, China
| | - Pengfei Zhang
- College of Material Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore.,Center for Functional Materials, National University of Singapore Suzhou Research Institute, Suzhou 215123, China
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215
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Shi J, Wang Y, Bu Q, Liu B, Dai B, Liu N. Cr-Catalyzed Direct ortho-Aminomethylation of Phenols. J Org Chem 2021; 86:17567-17580. [PMID: 34874723 DOI: 10.1021/acs.joc.1c01406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We developed a Cr-catalyzed strategy for the regioselective formation of Csp2-Csp3 bonds through the direct and efficient ortho-aminomethylation of N,N-dimethylanilines with phenols. The approach showed excellent site selectivity at the ortho-position of phenols and accommodated broad substrate scope and functional group compatibility for both N,N-dimethylanilines and phenols. Mechanistic studies revealed that the direct ortho-aminomethylation between N,N-dimethylanilines and phenols occurred via an ionic mechanism.
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Affiliation(s)
- Junbin Shi
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Yubin Wang
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Qingqing Bu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Binyuan Liu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China.,Hebei Key Laboratory of Functional Polymers, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
| | - Bin Dai
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
| | - Ning Liu
- School of Chemistry and Chemical Engineering, Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, North Fourth Road, Shihezi, Xinjiang 832003, China
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216
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Srinath R, Manna A, Shee S, Pathi VB, Ghosh S, Khamaru K, Maiti NC, Banerji B. Synthesis of N-Fused Triazole-Piperazine-Quinazolinones via One-Pot Tandem Click Reaction and Cross-Dehydrogenative Coupling. Org Lett 2021; 23:9365-9370. [PMID: 34806384 DOI: 10.1021/acs.orglett.1c03435] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Herein, a one-pot protocol to synthesize tetracyclic triazole-piperazine-quinazolinone-fused N-heterocyclic scaffolds is reported. In this strategy, a tandem approach of two highly efficient synthetic reactions, click and cross-dehydrogentive coupling reactions, with high atom economy were employed to obtain the target N-fused scaffolds. Being highly functional group tolerable, this method has broad substrate scope. Interestingly, some of these derivatives showed strong white solid-state fluorescence.
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Affiliation(s)
- Ravuri Srinath
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India.,National Institute of Pharmaceutical Education and Research (NIPER-Kolkata), Chunilal Bhawan, Maniktala, Kolkata 700054, India
| | - Arindam Manna
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India
| | - Subhankar Shee
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India
| | - Vijay Babu Pathi
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India.,Academy of Scientific and Innovative Research (AcSIR), 4 Raja S. C. Mullick Road, Kolkata 700032, India
| | - Saswati Ghosh
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India
| | - Krishnendu Khamaru
- Structural Biology & Bioinformatics, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India
| | - Nakul Chandra Maiti
- Structural Biology & Bioinformatics, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India
| | - Biswadip Banerji
- Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, Raja S. C. Mullick Road, Kolkata 700032, India.,Academy of Scientific and Innovative Research (AcSIR), 4 Raja S. C. Mullick Road, Kolkata 700032, India
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217
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Hore S, Singh RP. Phosphorylation of arenes, heteroarenes, alkenes, carbonyls and imines by dehydrogenative cross-coupling of P(O)-H and P(R)-H. Org Biomol Chem 2021; 20:498-537. [PMID: 34904988 DOI: 10.1039/d1ob02003j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Organophosphorous compounds have recently emerged as a powerful class of compounds with widespread applications, such as in bioactive natural products, pharmaceuticals, agrochemicals and organic materials, and as ligands in catalysis. The preparation of these compounds requires synthetic techniques with novel catalytic systems varying from transition metal, photo- and electrochemical catalysis to transformations without metal catalysts. Over the past few decades, the addition of P-H bonds to alkenes, alkynes, arenes, heteroarenes and other unsaturated substrates in hydrophosphination and other related reactions via the above-mentioned catalytic processes has emerged as an atom economical approach to obtain organophosphorus compounds. In most of the catalytic cycles, the P-H bond is cleaved to yield a phosphorus-based radical, which adds onto the unsaturated substrate followed by reduction of the corresponding radical yielding the product.
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Affiliation(s)
- Soumyadip Hore
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi-110016, India.
| | - Ravi P Singh
- Department of Chemistry, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi-110016, India.
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218
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Zhu SS, Liu Y, Chen XL, Qu LB, Yu B. Polymerization-Enhanced Photocatalysis for the Functionalization of C(sp3)–H Bonds. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03765] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Shan-Shan Zhu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Yan Liu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
- Henan International Joint Laboratory of Rare Earth Composite Material, College of Materials Engineering, Henan University of Engineering, Zhengzhou 451191, China
| | - Xiao-Lan Chen
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Ling-Bo Qu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
| | - Bing Yu
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, China
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219
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Liu L, Guo K, Tian Y, Yang C, Gu Q, Li Z, Ye L, Liu X. Copper‐Catalyzed Intermolecular Enantioselective Radical Oxidative C(sp
3
)−H/C(sp)−H Cross‐Coupling with Rationally Designed Oxazoline‐Derived N,N,P(O)‐Ligands. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lin Liu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Kai‐Xin Guo
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Yu Tian
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Chang‐Jiang Yang
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Qiang‐Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Zhong‐Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Liu Ye
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry Southern University of Science and Technology Shenzhen 518055 China
| | - Xin‐Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
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220
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Liu L, Guo KX, Tian Y, Yang CJ, Gu QS, Li ZL, Ye L, Liu XY. Copper-Catalyzed Intermolecular Enantioselective Radical Oxidative C(sp 3 )-H/C(sp)-H Cross-Coupling with Rationally Designed Oxazoline-Derived N,N,P(O)-Ligands. Angew Chem Int Ed Engl 2021; 60:26710-26717. [PMID: 34606167 DOI: 10.1002/anie.202110233] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/20/2021] [Indexed: 12/14/2022]
Abstract
The intermolecular asymmetric radical oxidative C(sp3 )-C(sp) cross-coupling of C(sp3 )-H bonds with readily available terminal alkynes is a promising method to forge chiral C(sp3 )-C(sp) bonds because of the high atom and step economy, but remains underexplored. Here, we report a copper-catalyzed asymmetric C(sp3 )-C(sp) cross-coupling of (hetero)benzylic and (cyclic)allylic C-H bonds with terminal alkynes that occurs with high to excellent enantioselectivity. Critical to the success is the rational design of chiral oxazoline-derived N,N,P(O)-ligands that not only tolerate the strong oxidative conditions which are requisite for intermolecular hydrogen atom abstraction (HAA) processes but also induce the challenging enantiocontrol. Direct access to a range of synthetically useful chiral benzylic alkynes and 1,4-enynes, high site-selectivity among similar C(sp3 )-H bonds, and facile synthesis of enantioenriched medicinally relevant compounds make this approach very attractive.
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Affiliation(s)
- Lin Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Kai-Xin Guo
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yu Tian
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chang-Jiang Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Zhong-Liang Li
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Liu Ye
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
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221
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222
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Liao Y, Liu F, Shi ZJ. Recent progress in the oxidative coupling of unactivated Csp 3-H bonds with other C-H bonds. Chem Commun (Camb) 2021; 57:13288-13296. [PMID: 34825675 DOI: 10.1039/d1cc04802c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The oxidative coupling between two carbon-hydrogen (C-H) bonds offers the most straightforward pathway to construct C-C bonds from hydrocarbons without pre-functionalization, exhibiting high step- and atom-economy. This article features the recent advances in the oxidative coupling of unactivated Csp3-H with different hybrid C-H bonds, including Csp-H, Csp2-H and Csp3-H bonds. The substrate scope, proposed mechanism and application of these reactions are summarized, intending to provide insights toward developing novel and efficient protocols for Csp3-C bond construction.
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Affiliation(s)
- Yang Liao
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
| | - Feng Liu
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
| | - Zhang-Jie Shi
- Department of Chemistry, Fudan University, 2005 Songhu Rd, Shanghai, 200438, China.
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223
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Wang TC, Zhu L, Luo S, Nong ZS, Wang PS, Gong LZ. Palladium-Catalyzed Enantioselective C(sp 3)-H/C(sp 3)-H Umpolung Coupling of N-Allylimine and α-Aryl Ketones. J Am Chem Soc 2021; 143:20454-20461. [PMID: 34817997 DOI: 10.1021/jacs.1c10721] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Asymmetric functionalization of the C(sp3)-H bond is an attractive yet challenging strategy to achieve versatile bond-forming events, enabling the precise assembly of molecular complexity with minimal manipulation of functional groups. Here, we report an asymmetric C(sp3)-H/C(sp3)-H umpolung coupling of N-allylimine and coordinating α-aryl carbonyls by using chiral phosphoramidite-palladium catalysis. A wide variety of α-heteroaryl ketones and 2-acylimidazoles are nicely tolerated to open a convenient and tunable avenue for efficient synthesis of enantioenriched β-amino-γ,δ-unsaturated carbonyl derivatives with high levels of regio- and stereoselectivities, capable of providing a key intermediate for asymmetric synthesis of Focalin. This protocol showcases an umpolung reactivity of the N-allylimines through a concerted proton and two-electron transfer process to cleave the allylic C-H bond, effectively complementing established methodology for allylic C-H functionalization. An inner-sphere allylation pathway for both α-heteroaryl carbonyls and 2-acylimidazoles to attack the π-allylpalladium species is suggested by computational studies and experimental facts, wherein the nitrogen coordination to the palladium center enables the preference of branched regioselectivity.
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Affiliation(s)
- Tian-Ci Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Ling Zhu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Shiwei Luo
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Zhong-Sheng Nong
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Pu-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Liu-Zhu Gong
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, China.,Center for Excellence in Molecular Synthesis of CAS, University of Science and Technology of China, Hefei 230026, China
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224
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Campos JF, Cimorelli M, Jemili R, Berteina‐Raboin S. Microwave‐Assisted CH Activation of the Thiophene Ring: A Simple Approach to Access Substituted Thienopyridines. ChemistrySelect 2021. [DOI: 10.1002/slct.202101643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Joana F. Campos
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans UMR-CNRS 7311, BP 6759 rue de Chartres 45067 Orléans cedex 2 France
| | - Mélanie Cimorelli
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans UMR-CNRS 7311, BP 6759 rue de Chartres 45067 Orléans cedex 2 France
| | - Rihab Jemili
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans UMR-CNRS 7311, BP 6759 rue de Chartres 45067 Orléans cedex 2 France
| | - Sabine Berteina‐Raboin
- Institut de Chimie Organique et Analytique (ICOA) Université d'Orléans UMR-CNRS 7311, BP 6759 rue de Chartres 45067 Orléans cedex 2 France
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225
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Zhang QL, Yu QQ, Ma L, Lu X, Fan QT, Duan TS, Zhou Y, Zhang FL. A Metal-Free Visible-Light Photoredox Construction and Direct C-H Functionalization of Pyridines: Green Synthesis of Polysubstituted Picolinaldehydes. J Org Chem 2021; 86:17244-17248. [PMID: 34807586 DOI: 10.1021/acs.joc.1c02312] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The development of a novel environmental benign and sustainable synthetic method for highly efficient construction and direct C-H functionalization of N-heterocycles remains a pivotal central research topic for organic and medicinal chemistry. Herein, a novel visible-light-enabled biomimetic aza-6π electrocyclization for efficient assembly of diverse pyridines and further tandem Minisci-type reaction were developed. A broad spectrum of polysubstituted picolinaldehydes were readily constructed with high efficacy and good functional group tolerance under metal- and oxidant-free conditions.
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Affiliation(s)
- Qun-Liang Zhang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China.,Shenzhen Research Institute, Wuhan University of Technology, Shenzhen, Guangdong 518057, China
| | - Qin-Qin Yu
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Li Ma
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Xuelian Lu
- Shenzhen Research Institute, Wuhan University of Technology, Shenzhen, Guangdong 518057, China
| | - Qing-Tian Fan
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Tian-Shun Duan
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China
| | - Yirong Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan 430030, China
| | - Fang-Lin Zhang
- School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan 430070, China.,Shenzhen Research Institute, Wuhan University of Technology, Shenzhen, Guangdong 518057, China
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226
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Roy VJ, Sen PP, Raha Roy S. Visible-Light-Mediated Cross Dehydrogenative Coupling of Thiols with Aldehydes: Metal-Free Synthesis of Thioesters at Room Temperature. J Org Chem 2021; 86:16965-16976. [PMID: 34726397 DOI: 10.1021/acs.joc.1c02111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thioesters play a crucial role in biological systems and serve as important building blocks for organic synthesis. Herein, Eosin Y and TBHP mediated photochemical cross dehydrogenative coupling (PCDC) between feedstock aldehydes and thiols has been described at room temperature to synthesize thioesters. This thioesterification protocol proceeds smoothly to give the desired products in good to excellent yields by the suitable PCDC of both alkyl/aryl- aldehydes with a variety of alkyl/aryl-thiols and generates water and tBuOH as green byproducts. This method is also found to be scalable with good efficiency. Mechanistic investigations reveal that under this photochemical condition, the formation of acyl radical can be achieved from aldehyde. This acyl radical was further intercepted with an intermediate disulfide, generated in situ via the dehydrogenation of thiol to give the desired thioester. Moreover, disulfides, which are relatively easier to handle, also provided good to excellent yields in the optimized reaction condition. This protocol was further extended toward the more challenging direct transformation of alcohols to thioesters.
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Affiliation(s)
- Vishal Jyoti Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Partha Pratim Sen
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
| | - Sudipta Raha Roy
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India
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227
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Ung SP, Perepichka I, Li C. Visible‐Light Mediated Photooxidative Phosphorylation of Benzylamines: A Novel and Mild Pathway Towards α‐Aminophosphorus Compounds. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sosthène P.‐M. Ung
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis McGill University 801 Sherbrooke Street West Montreal, Quebec H3A 0B8 Canada
| | - Inna Perepichka
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis McGill University 801 Sherbrooke Street West Montreal, Quebec H3A 0B8 Canada
| | - Chao‐Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis McGill University 801 Sherbrooke Street West Montreal, Quebec H3A 0B8 Canada
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228
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Zhang Y, Jiang W, Bao X, Qiu Y, Yuan Y, Yang C, Huo C. Photocatalyzed Reverse Polarity Oxidative Povarov Reaction of Glycine Derivatives with Maleimides. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yongxin Zhang
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Wei Jiang
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Xiazhen Bao
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Yifeng Qiu
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Yong Yuan
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Caixia Yang
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
| | - Congde Huo
- Gansu International Scientific and Technological Cooperation Base of Water‐Retention Chemical Functional Materials; Key Laboratory of Eco‐Environment‐Related Polymer Materials, Ministry of Education; College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou Gansu 730070 China
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229
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Kim Y, Kim D, Chang S. Ir(III)-Catalysed electrooxidative intramolecular dehydrogenative C-H/N-H coupling for the synthesis of N-H indoles. Chem Commun (Camb) 2021; 57:12309-12312. [PMID: 34734951 DOI: 10.1039/d1cc05882g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, an iridium(III)-catalysed electrooxidative intramolecular dehydrogenative C-H/N-H coupling of unprotected 2-alkenyl anilines is described. The developed method allows the synthesis of a variety of 3-substituted N-H indole scaffolds under undivided electrolytic conditions. Mechanistic studies suggest that the reaction proceeds through the electro-oxidation induced reductive elimination pathway.
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Affiliation(s)
- Youyoung Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea. .,Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, South Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea. .,Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, South Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, South Korea. .,Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, South Korea
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230
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Tabey A, Vemuri PY, Patureau FW. Cross-dehydrogenative N-N couplings. Chem Sci 2021; 12:14343-14352. [PMID: 34880984 PMCID: PMC8580018 DOI: 10.1039/d1sc03851f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 09/10/2021] [Indexed: 11/21/2022] Open
Abstract
The relatively high electronegativity of nitrogen makes N-N bond forming cross-coupling reactions particularly difficult, especially in an intermolecular fashion. The challenge increases even further when considering the case of dehydrogenative N-N coupling reactions, which are advantageous in terms of step and atom economy, but introduce the problem of the oxidant in order to become thermodynamically feasible. Indeed, the oxidizing system must be designed to activate the target N-H bonds, while at the same time avoid undesired N-N homocoupling as well as C-N and C-C coupled side products. Thus, preciously few intermolecular hetero N-N cross-dehydrogenative couplings exist, in spite of the central importance of N-N bonds in organic chemistry. This review aims at analyzing these few rare cases and provides a perspective for future developments.
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Affiliation(s)
- Alexis Tabey
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Pooja Y Vemuri
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany
| | - Frederic W Patureau
- Institute of Organic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany
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231
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Guo X, Shao BR, Jiang WF, Shi L. The Photocatalyst-Free Cross-Dehydrogenative Coupling Reaction Enabled by Visible-Light Direct Excitation of Substrate. J Org Chem 2021; 86:15743-15752. [PMID: 34694134 DOI: 10.1021/acs.joc.1c01775] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new photocatalyst-free strategy for the cross-dehydrogenative C-C and C-P coupling reaction has been described. This protocol provides a concise method to synthesize various 1-substituted tetrahydroisoquinoline (THIQ) derivatives enabled by visible-light direct excitation of substrates without using any photocatalyst. Moreover, a wide substrate scope demonstrated good synthetic versatility and practicality.
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Affiliation(s)
- Xuan Guo
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Bing-Ru Shao
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Wen-Feng Jiang
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
| | - Lei Shi
- School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, P. R. China
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232
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Yuan X, Yu X, He K, Zhang R, Xiao W, Lin J, Zhan Z, Cheng X, Shao Z, Jin Y. Dual C(sp 3)-H Functionalization of Cyclic Ethers via Singlet Oxygen-Mediated Ring Opening and Ring Closing. Org Lett 2021; 23:8267-8272. [PMID: 34633191 DOI: 10.1021/acs.orglett.1c03008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A metal-free dual C(sp3)-H bond functionalization of saturated cyclic ethers via photooxidative singlet oxygen-mediated ring opening and ring closing has been developed, providing a method for generating hydrobenzofurans/pyrans/dioxins. Mechanistic studies have confirmed that ring-opening intermediates were effectively generated by singlet oxygen-mediated C(sp3)-H activation and efficiently reacted with aldehydes and activated methylene compounds to form a wide array of products with high diastereoselectivities (up to >95:5 dr). This study is a rare example of α,β-dual C(sp3)-H bond functionalization of ethers.
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Affiliation(s)
- Xu Yuan
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Xianglin Yu
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Kun He
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Ruihan Zhang
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Weilie Xiao
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Jun Lin
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Zhajun Zhan
- College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Xiaohong Cheng
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Zhihui Shao
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Yi Jin
- Key Laboratory of Medicinal for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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233
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Zhang MZ, Li WT, Li YY, Wang Q, Li C, Liu YH, Yin JX, Yang X, Huang H, Chen T. Discovery of an Oxidative System for Radical Generation from Csp 3-H Bonds: A Synthesis of Functionalized Oxindoles. J Org Chem 2021; 86:15544-15557. [PMID: 34570502 DOI: 10.1021/acs.joc.1c02032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A facile and versatile method for generating radicals from Csp3-H bonds under metal-free and organic-peroxide-free conditions was developed. By combining safe persulfate and low-toxic quaternary ammonium salt, a wide variety of Csp3-H compounds including ethers, (hetero)aromatic/aliphatic ketones, alkylbenzenes, alkylheterocycles, cycloalkanes, and haloalkanes were selectively activated to generate the corresponding C-centered radicals, which could be further captured by N-arylacrylamides to deliver the valuable functionalized oxindoles. Good functional group tolerance was demonstrated. The useful polycarbonyl compound and esters were also modified with the strategy. Moreover, the combination can also be applied to the practical coupling between simple haloalkanes and N-hydroxyphthalimide (NHPI).
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Affiliation(s)
- Ming-Zhong Zhang
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Wan-Ting Li
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Yuan-Yuan Li
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Qi Wang
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Chong Li
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Yan-Hao Liu
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Jin-Xing Yin
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Xin Yang
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Huisheng Huang
- Chongqing Key Laboratory of Inorganic Special Functional Materials, College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408100, China
| | - Tieqiao Chen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan University, Haikou 570228, China
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234
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Xia D, Duan XF. Iron-Catalyzed Dearomatization of Biaryl Ynones with Aldehydes via Double C-H Functionalization in Eco-Benign Solvents: Highly Atom-Economical Synthesis of Acylated Spiro[5.5]trienones. J Org Chem 2021; 86:15263-15275. [PMID: 34643395 DOI: 10.1021/acs.joc.1c01870] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The multiple C-H bonds of biaryl ynones render the 6-exo-trig regioselective C-H activation dearomatization to spiro[5.5]trienones challenging since the competing reactions of C-H bonds on Ar1 or the ortho-C-H bonds on Ar3 may result in 5-exo-trig cyclization to indenones or 6-exo-trig ortho-dearomatization, respectively. We here report an unprecendented dearomatization of biaryl ynones with aldehydes via double C-H functionalization where a regiospecific remote unactivated para-C-H functionalization of biaryl ynones efficiently furnishes acylated spiro[5.5]trienones. This cascade cyclization features a green catalyst and solvent and high atom- and step-economy.
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Affiliation(s)
- Dong Xia
- College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Xin-Fang Duan
- College of Chemistry, Beijing Normal University, Beijing 100875, China
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235
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Yang F, Zhou Q, Wang H, Tang L. Copper‐Catalyzed Cross‐Dehydrogenative Phosphorylation of 2‐Amino‐1,4‐naphthoquinones with
H
‐Phosphonates. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100870] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Fang Yang
- College of Chemistry and Chemical Engineering Xinyang Normal University Xinyang 464000 P. R. China
| | - Qiuju Zhou
- College of Chemistry and Chemical Engineering Xinyang Normal University Xinyang 464000 P. R. China
| | - Heyan Wang
- College of Chemistry and Chemical Engineering Xinyang Normal University Xinyang 464000 P. R. China
| | - Lin Tang
- College of Chemistry and Chemical Engineering Xinyang Normal University Xinyang 464000 P. R. China
- Province Key Laboratory of Utilization of Non-metallic Mineral in the South of Henan Xinyang 464000 P. R. China
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236
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Jiang X, Du X, Chen K, Han H, Xu D, Zhu B, Jiang L, Fang L, Yu C. Metal-free C3 α-aminoalkylation of quinoxalin-2(1H)-ones with amines. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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237
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Wasa M, Yesilcimen A. Enantioselective Cooperative Catalysis within Frustrated Lewis Pair Complexes. J SYN ORG CHEM JPN 2021. [DOI: 10.5059/yukigoseikyokaishi.79.1065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Masayuki Wasa
- Department of Chemistry, Merkert Chemistry Center, Boston College
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238
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Chu XQ, Ge D, Cui YY, Shen ZL, Li CJ. Desulfonylation via Radical Process: Recent Developments in Organic Synthesis. Chem Rev 2021; 121:12548-12680. [PMID: 34387465 DOI: 10.1021/acs.chemrev.1c00084] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
As the "chemical chameleon", sulfonyl-containing compounds and their variants have been merged with various types of reactions for the efficient construction of diverse molecular architectures by taking advantage of their incredible reactive flexibility. Currently, their involvement in radical transformations, in which the sulfonyl group typically acts as a leaving group via selective C-S, N-S, O-S, S-S, and Se-S bond cleavage/functionalization, has facilitated new bond formation strategies which are complementary to classical two-electron cross-couplings via organometallic or ionic intermediates. Considering the great influence and synthetic potential of these novel avenues, we summarize recent advances in this rapidly expanding area by discussing the reaction designs, substrate scopes, mechanistic studies, and their limitations, outlining the state-of-the-art processes involved in radical-mediated desulfonylation and related transformations. With a specific emphasis on their synthetic applications, we believe this review will be useful for medicinal and synthetic organic chemists who are interested in radical chemistry and radical-mediated desulfonylation in particular.
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Affiliation(s)
- Xue-Qiang Chu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Danhua Ge
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Yan-Ying Cui
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Zhi-Liang Shen
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Chao-Jun Li
- Department of Chemistry and FQRNT Centre for Green Chemistry and Catalysis, McGill University, Montreal, Quebec H3A 0B8, Canada
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239
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Wang F, Yu D, Chen Y, Sun J, Wang JY, Zhou MD. Cross-dehydrogenative Coupling of N-Aryl Tetrahydroisoquinolines Catalyzed by an Anthraquinone-containing Polymeric Photosensitizer. Chem Asian J 2021; 16:4087-4094. [PMID: 34668333 DOI: 10.1002/asia.202100978] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/19/2021] [Indexed: 11/09/2022]
Abstract
This work reports the photocatalytic application of an anthraquinone-containing polymeric photosensitizer (AQ-PHEMA) in the visible light-induced cross-dehydrogenative-coupling of N-aryl tetrahydroisoquinolines with several nucleophiles, including nitromethane, 1-methyl-2-alkyl ketone and dialkyl (aryl) phosphine oxide. The results revealed that the reaction could be catalyzed by AQ-PHEMA efficiently to afford a series of 1-substituted-2-aryl-1,2,3,4-tetrahydroisoquinolines in good to excellent yields with nice substrate tolerance under aerobic conditions at room temperature. The practical application potential was also showcased by a gram-scale synthesis. More importantly, the utilization of AQ-PHEMA as a heterogeneous photosensitizer also showed nice recyclability and reusability of the catalyst, whereas AQ-PHEMA can be easily separated and reused for at least 8 times without significant loss of photocatalytic activity.
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Affiliation(s)
- Fei Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Dan Yu
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Yang Chen
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Jing Sun
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Jing-Yun Wang
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
| | - Ming-Dong Zhou
- School of Petrochemical Engineering, Liaoning Petrochemical University, 113001, Dan Dong Road 1, Fushun, P. R. China
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240
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Wu Y, Wen K, Chen J, Shi J, Yao X, Tang X. Copper-Mediated Decarboxylative Coupling between Arylacetic Acids and 1,3-Dicarbonyl Compounds. Org Lett 2021; 23:7878-7882. [PMID: 34612042 DOI: 10.1021/acs.orglett.1c02897] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A copper-mediated decarboxylative coupling reaction between arylacetic acids and 1,3-dicarbonyl compounds was described. Significantly, methanocycloocta[b]indoles were also obtained by sequential intramolecular dehydrocyclization process in some cases. This protocol featured a broad substrate scope, simple operations, and good yields. Moreover, the products exhibited potent antiproliferative activity against the human cancer cell lines by a MTT assay.
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Affiliation(s)
- Yinrong Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, PR China
| | - Kangmei Wen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, PR China
| | - Jiewen Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, PR China
| | - Jie Shi
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, PR China
| | - Xingang Yao
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, PR China
| | - Xiaodong Tang
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, 1023 South Shatai Road, Baiyun District, Guangzhou 510515, PR China
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241
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Ghosh D, Ghosh S, Hajra A. Electrochemical Functionalization of Imidazopyridine and Indazole: An Overview. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100981] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Debashis Ghosh
- Department of Chemistry St. Joseph's College (Autonomous) Bangalore 560027 Karnataka India
| | - Sumit Ghosh
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
| | - Alakananda Hajra
- Department of Chemistry Visva-Bharati (A Central University) Santiniketan 731235 India
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242
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Xu H, Zhang H, Tong QX, Zhong JJ. Photoredox/cobaloxime co-catalyzed allylation of amines and sulfonyl hydrazines with olefins to access α-allylic amines and allylic sulfones. Org Biomol Chem 2021; 19:8227-8231. [PMID: 34337641 DOI: 10.1039/d1ob01307f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we reported a dual-catalytic platform for the allylation of amines and sulfonyl hydrazines with olefins to selectively access α-allylic amines and allylic sulfones in good yields by combining photoredox catalysis and cobaloxime catalysis. This strategy avoided the use of a stoichiometric amount of terminal oxidant and the use of pre-functionalized allylic precursors, representing a green and ideal atom- & step-economical process. Good substrate scope and gram-scale synthesis demonstrated the utility of this protocol. Mechanistic studies revealed that a radical process is probably involved in this reaction.
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Affiliation(s)
- Hui Xu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China.
| | - Hong Zhang
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China.
| | - Qing-Xiao Tong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China.
| | - Jian-Ji Zhong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University, and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China.
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243
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Li Y, Liu H, Huang Z, Wang H, Yu Z. Palladium-catalyzed cross-dehydrogenative-coupling of nitro-substituted internal alkenes with terminal alkenes. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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244
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Pulcinella A, Mazzarella D, Noël T. Homogeneous catalytic C(sp 3)-H functionalization of gaseous alkanes. Chem Commun (Camb) 2021; 57:9956-9967. [PMID: 34495026 DOI: 10.1039/d1cc04073a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conversion of light alkanes into bulk chemicals is becoming an important challenge as it effectively avoids the use of prefunctionalized alkylating reagents. The implementation of such processes is, however, hampered by their gaseous nature and low solubility, as well as the low reactivity of the C-H bonds. Efforts have been made to enable both polar and radical processes to activate these inert compounds. In addition, these methodologies also benefit significantly from the development of a suitable reactor technology that intensifies gas-liquid mass transfer. In this review, we critically highlight these developments, both from a conceptual and a practical point of view. The recent expansion of these mechanistically-different methods have enabled the use of various gaseous alkanes for the development of different bond-forming reactions, including C-C, C-B, C-N, C-Si and C-S bonds.
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Affiliation(s)
- Antonio Pulcinella
- Flow Chemistry Group, Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam Science Park 904, 1098 XH, Amsterdam, The Netherlands.
| | - Daniele Mazzarella
- Flow Chemistry Group, Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam Science Park 904, 1098 XH, Amsterdam, The Netherlands.
| | - Timothy Noël
- Flow Chemistry Group, Van't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam Science Park 904, 1098 XH, Amsterdam, The Netherlands.
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245
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Nicoli F, Baroncini M, Silvi S, Groppi J, Credi A. Direct synthetic routes to functionalised crown ethers. Org Chem Front 2021; 8:5531-5549. [PMID: 34603737 PMCID: PMC8477657 DOI: 10.1039/d1qo00699a] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 05/27/2021] [Indexed: 11/21/2022]
Abstract
Crown ethers are macrocyclic hosts that can complex a wide range of inorganic and organic cations as well as neutral guest species. Their widespread utilization in several areas of fundamental and applied chemistry strongly relies on strategies for their functionalisation, in order to obtain compounds that could carry out multiple functions and could be incorporated in sophisticated systems. Although functionalised crown ethers are normally synthesised by templated macrocyclisation using appropriately substituted starting materials, the direct addition of functional groups onto a pre-formed macrocyclic framework is a valuable yet underexplored alternative. Here we review the methodologies for the direct functionalisation of aliphatic and aromatic crown ethers sporadically reported in the literature over a period of four decades. The general approach for the introduction of moieties on aliphatic crown ethers involves a radical mediated cross dehydrogenative coupling initiated either by photochemical or thermal/chemical activation, while aromatic crown ethers are commonly derivatised via electrophilic aromatic substitution. Direct functionalization routes can reduce synthetic effort, allow the later modification of crown ether-based architectures, and disclose new ways to exploit these versatile macrocycles in contemporary supramolecular science and technology.
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Affiliation(s)
- Federico Nicoli
- CLAN-Center for Light Activated Nanostructures Istituto ISOF-CNR via Gobetti 101 40129 Bologna Italy
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna viale del Risorgimento 4 40136 Bologna Italy
| | - Massimo Baroncini
- CLAN-Center for Light Activated Nanostructures Istituto ISOF-CNR via Gobetti 101 40129 Bologna Italy
- Dipartimento di Scienze e Tecnologie Agro-alimentari, Università di Bologna viale Fanin 44 40127 Bologna Italy
| | - Serena Silvi
- CLAN-Center for Light Activated Nanostructures Istituto ISOF-CNR via Gobetti 101 40129 Bologna Italy
- Dipartimento di Chimica "G. Ciamician", Università di Bologna via Selmi 2 40126 Bologna Italy
| | - Jessica Groppi
- CLAN-Center for Light Activated Nanostructures Istituto ISOF-CNR via Gobetti 101 40129 Bologna Italy
| | - Alberto Credi
- CLAN-Center for Light Activated Nanostructures Istituto ISOF-CNR via Gobetti 101 40129 Bologna Italy
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna viale del Risorgimento 4 40136 Bologna Italy
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246
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Ankade SB, Samal PP, Soni V, Gonnade RG, Krishnamurty S, Punji B. Ni(II)-Catalyzed Intramolecular C–H/C–H Oxidative Coupling: An Efficient Route to Functionalized Cycloindolones and Indenoindolones. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shidheshwar B. Ankade
- Organometallic Synthesis and Catalysis Lab, Chemical Engineering Division, CSIR−National Chemical Laboratory (CSIR−NCL), Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pragnya Paramita Samal
- Physical and Materials Chemistry Division, CSIR−National Chemical Laboratory (CSIR−NCL), Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Vineeta Soni
- Organometallic Synthesis and Catalysis Lab, Chemical Engineering Division, CSIR−National Chemical Laboratory (CSIR−NCL), Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rajesh G. Gonnade
- Centre for Material Characterization, CSIR−National Chemical Laboratory (CSIR−NCL), Dr. Homi Bhabha Road, Pune 411 008, India
| | - Sailaja Krishnamurty
- Physical and Materials Chemistry Division, CSIR−National Chemical Laboratory (CSIR−NCL), Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Lab, Chemical Engineering Division, CSIR−National Chemical Laboratory (CSIR−NCL), Dr. Homi Bhabha Road, Pune 411 008, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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247
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Yuan Y, Yang J, Lei A. Recent advances in electrochemical oxidative cross-coupling with hydrogen evolution involving radicals. Chem Soc Rev 2021; 50:10058-10086. [PMID: 34369504 DOI: 10.1039/d1cs00150g] [Citation(s) in RCA: 155] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oxidative cross-coupling has developed into a robust method for carbon-carbon (C-C), carbon-heteroatom (C-X), and heteroatom-heteroatom (X-Y) bond formation. Despite considerable advances in this field, the traditional oxidative cross-coupling reactions usually employ stoichiometric amounts of chemical oxidants to clean up surplus electrons from substrates to form new chemical bonds. Organic electrosynthesis is recognized as an environmentally benign and particularly powerful synthetic platform. Recent advancements have revealed that radical-involved electrochemical oxidative cross-coupling reactions can be achieved under exogenous-oxidant-free conditions. This tutorial review provides an overview of the most recent developments in electrochemical oxidative cross-coupling with hydrogen evolution involving radicals. Emphasis is mainly placed on synthetic and mechanistic aspects. We hope that this tutorial review can promote the development of radical chemistry, electrochemistry, and oxidative cross-coupling reactions.
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Affiliation(s)
- Yong Yuan
- Gansu International Scientific and Technological Cooperation Base of Water Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China.
| | - Jie Yang
- Gansu International Scientific and Technological Cooperation Base of Water Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China.
| | - Aiwen Lei
- College of Chemistry and Molecular Sciences, Institute for Advanced Studies (IAS), Wuhan University, Wuhan 430072, P. R. China.
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248
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Qiao J, Song ZQ, Huang C, Ci RN, Liu Z, Chen B, Tung CH, Wu LZ. Direct, Site-Selective and Redox-Neutral α-C-H Bond Functionalization of Tetrahydrofurans via Quantum Dots Photocatalysis. Angew Chem Int Ed Engl 2021; 60:27201-27205. [PMID: 34536248 DOI: 10.1002/anie.202109849] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/16/2021] [Indexed: 11/06/2022]
Abstract
As one of the most ubiquitous bulk reagents available, the intrinsic chemical inertness of tetrahydrofuran (THF) makes direct and site-selective C(sp3 )-H bond activation difficult, especially under redox neutral condition. Here, we demonstrate that semiconductor quantum dots (QDs) can activate α-C-H bond of THF via forming QDs/THF conjugates. Under visible light irradiation, the resultant alkoxyalkyl radical directly engages in radical cross-coupling with α-amino radical from amino C-H bonds or radical addition with alkene or phenylacetylene, respectively. In contrast to stoichiometric oxidant or hydrogen atom transfer reagents required in previous studies, the scalable benchtop approach can execute α-C-H bond activation of THF only by a QD photocatalyst under redox-neutral condition, thus providing a broad of value added chemicals starting from bulk THFs reagent.
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Affiliation(s)
- Jia Qiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zi-Qi Song
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Cheng Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Rui-Nan Ci
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zan Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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249
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Chen X, Zhang G, Zeng R. Dehydrogenative Aza-[4 + 2] Cycloaddition of Amines with 1,3-Dienes via Dual Catalysis. Org Lett 2021; 23:7144-7149. [PMID: 34459616 DOI: 10.1021/acs.orglett.1c02558] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
We describe a synergistic utilization of copper catalysis and proton-transfer catalysis that enables an atom- and step-economical aza-[4 + 2] cycloaddition reaction of readily available N-arylamino carbonyl compounds with simple 1,3-dienes. The reaction proceeds smoothly under an air atmosphere and produces water as the sole side product. Whereas the amines can directly serve as the C- and N-atom donors, this operationally simple protocol provides green, rapid, and efficient access to 1,2,3,6-tetrahydropyridines with a broad scope.
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Affiliation(s)
- Xiaoxiao Chen
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Guoxiang Zhang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Rong Zeng
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University, Xi'an 710049, P. R. China.,Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, P. R. China
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250
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Wu Z, Wu Z, Sun X, Qi W, Zhang Z, Zhang Y. Palladium-Catalyzed Intramolecular Cross-Coupling of Unactivated C(sp 3)-H and C(sp 2)-H Bonds. Org Lett 2021; 23:7161-7165. [PMID: 34477389 DOI: 10.1021/acs.orglett.1c02567] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Direct C-H/C-H coupling represents an appealing method for the construction of C-C bonds, and the cross-coupling of unactivated C(sp3)-H and C(sp2)-H bonds is challenging and remains to be investigated. We have developed the Pd-catalyzed intramolecular coupling of inert C(sp3)-H and C(sp2)-H bonds. The reaction proceeded by o-methyl oxime-directed aryl C(sp2)-H activation and subsequent alkyl C(sp3)-H cleavage, generating C(sp2),C(sp3)-palladacycles as the key intermediates. Dihydrobenzofurans and indanes were formed as the final products.
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Affiliation(s)
- Zhuo Wu
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Zechen Wu
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Xueliang Sun
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Weixin Qi
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Zhengyang Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
| | - Yanghui Zhang
- School of Chemical Science and Engineering, Shanghai Key Laboratory of Chemical Assessment and Sustainability, Tongji University, 1239 Siping Road, Shanghai 200092, China
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