1
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Li Z, Shi Z. Late-Stage Diversification of Phosphines by C-H Activation: A Robust Strategy for Ligand Design and Preparation. Acc Chem Res 2024; 57:1057-1072. [PMID: 38488874 DOI: 10.1021/acs.accounts.4c00020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2024]
Abstract
ConspectusThe advent of the twenty-first century marked a golden era in the realm of synthetic chemistry, exemplified by groundbreaking advancements in the field of C-H activation, which is a concept that quickly transitioned from mere academic fascination to an essential element within the synthetic chemist's toolkit. This methodological breakthrough has given rise to a wealth of opportunities spanning a wide range of chemical disciplines. It has facilitated the late-stage diversification of elaborate organic frameworks, encompassing the spectrum from simple methane to complex polymers, thus refining the lead optimization process and easing the production of diverse molecular analogues. Among these strides forward, the development of phosphorus(III)-directed C-H activation stands out as an increasingly significant and inventive approach for the design and synthesis of ligands, substantially redefining the contours of synthetic methodology.Phosphines, renowned for their roles as ligands and organocatalysts, have become fundamentally important in modern organic chemistry. Their efficiency as ligands is significantly affected by coordination with transition metals, which is essential for their involvement in catalytic processes, influencing both the catalytic activity and the selectivity. Historically, the fabrication of phosphines predominantly relied on synthesis employing complex, multistep procedures. Addressing this limitation, our research has delved into ligand design and synthesis through innovative catalytic P(III)-directed C-H activation strategies. In this Account, we have explored a spectrum of procedures, including direct arylation using metal catalysis, and ventured further into domains such as C-H alkylation, alkenylation, aminocarbonylation, alkynylation, borylation, and silylation. These advances have enriched the field by providing efficient methods for the late-stage diversification of biaryl-type monophosphines as well as enabled the C-H activation of triphenylphosphine and its derivatives. Moreover, we have successfully constructed libraries of diverse axially chiral binaphthyl phosphine ligands, showcasing their potency in asymmetric catalysis. Through this Account, we aim to illuminate the exciting possibilities presented by P(III)-directed C-H activation in propelling the boundaries of organic synthesis. By highlighting our pioneering work, we hope to inspire further developments in this promising field of chemistry.
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Affiliation(s)
- Zexian Li
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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2
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Saleh N, Besnard C, Lacour J. Concave P-Stereogenic Phosphorodiamidite Ligands for Enantioselective Rh(I) Catalysis. Org Lett 2024; 26:2202-2206. [PMID: 38471122 DOI: 10.1021/acs.orglett.4c00371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2024]
Abstract
The development of a new class of concave P-stereogenic phosphorodiamidite ligands, derived from Tröger's bases (TBs), is explored. These ligands, characterized by their remarkable stability and unique structural geometry around the P atom, are used in asymmetric Rh(I)-catalyzed additions of boronic acids to NH-isatins resulting in excellent reactivities and reasonable enantioselectivity (er up to 92:8).
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Affiliation(s)
- Nidal Saleh
- Department of Organic Chemistry, University of Geneva, 1211 Geneva 4, Switzerland
| | - Céline Besnard
- Laboratory of Crystallography, University of Geneva, 1211 Geneva 4, Switzerland
| | - Jérôme Lacour
- Department of Organic Chemistry, University of Geneva, 1211 Geneva 4, Switzerland
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3
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Li Z, Xu W, Song S, Wang M, Zhao Y, Shi Z. Enantioselective Rhodium-Catalyzed C-H Arylation Enables Direct Synthesis of Atropisomeric Phosphines. Angew Chem Int Ed Engl 2024; 63:e202316035. [PMID: 38182545 DOI: 10.1002/anie.202316035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/02/2024] [Accepted: 01/03/2024] [Indexed: 01/07/2024]
Abstract
Atropisomeric phosphines hold considerable significance in asymmetric catalysis, yet their synthesis presents a formidable challenge owing to intricate multistep procedures. In this context, a groundbreaking methodology has been presented for their preparation. This innovative approach entails an atroposelective rhodium-catalyzed C-H activation employing aryl and heteroaryl halides, chelated by a P(III) center. The essence of this strategy lies in its ability to directly construct chiral phosphine ligands in a single step, thereby exhibiting exceptional efficiency in terms of atom and redox economy. Illustrative examples serve to demonstrate the immense potential of in situ-formed ligands in asymmetric catalysis. Mechanistic experiments have further provided invaluable insights into this transformation.
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Affiliation(s)
- Zexian Li
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Weipeng Xu
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Shuaishuai Song
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Minyan Wang
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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4
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Guo W, Zhan S, Yang H, Gu Z. Confronting the Challenge of Asymmetric Carbonyl Addition to Sterically Bulky Isatins: Upgrading Dirhodium(II)/Biphosphine Catalytic System. Org Lett 2023; 25:3281-3286. [PMID: 37125697 DOI: 10.1021/acs.orglett.3c01028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Catalytic asymmetric addition of arylboronic acids to ketones is a powerful transformation for directly delivering chiral tertiary alcohols. However, there is no successful example of enantioselective addition to steric bulky isatins, which contain bulky substituent at the 4-position. To confront this challenge, in this work a dirhodium/(BTFM-Garphos) system was developed that showed extremely high activity and stereoselectivity, and the reactions were usually finished within a few minutes.
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Affiliation(s)
- Wenjing Guo
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Shuming Zhan
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Han Yang
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Zhenhua Gu
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou, Fujian 350108, P. R. China
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5
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Shi L, Xue X, Hong B, Li Q, Gu Z. Dirhodium(II)/Phosphine Catalyst with Chiral Environment at Bridging Site and Its Application in Enantioselective Atropisomer Synthesis. ACS CENTRAL SCIENCE 2023; 9:748-755. [PMID: 37122446 PMCID: PMC10141619 DOI: 10.1021/acscentsci.2c01207] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Indexed: 05/03/2023]
Abstract
A dirhodium(II)/phosphine catalyst with a chiral environment at the bridging site was developed for the asymmetric arylation of phenanthrene-9,10-diones with arylboronic acids. In contrast to the classic chiral bridging carboxylic acid (or derivatives) ligand strategy of bimetallic dirhodium(II) catalysis, in this reaction, tuning both axial and bridging ligands realized the first Rh2(OAc)4/phosphine-catalyzed highly enantioselective carbonyl addition reaction. The kinetic analysis reveals that dirhodium(II) and arylboronic acid follow the first-order kinetics, while phenanthrene-9,10-dione is zeroth-order. These data supported the proposed catalytic cycle, where the key intermediate in the rate-determining step involved the dirhodium(II) complex and arylboronic acid. Finally, axially chiral biaryls were prepared based on a newly developed oxidative ring-opening reaction of α-hydroxyl ketones with a base and molecular oxygen, which featured a central-to-axial chirality transfer radical β-scission step.
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Affiliation(s)
- Lei Shi
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Xiaoping Xue
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Biqiong Hong
- College
of Materials and Chemical Engineering, Minjiang
University, Fuzhou, Fujian 350108, China
| | - Qigang Li
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
| | - Zhenhua Gu
- Hefei
National Research Center for Physical Sciences at the Microscale and
Department of Chemistry, University of Science
and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, P. R. China
- College
of Materials and Chemical Engineering, Minjiang
University, Fuzhou, Fujian 350108, China
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6
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Zhu J, Li Z, Li J, Tian D, Xu R, Tan Z, Chen Z, Tang W. Enantioselective rhodium-catalyzed addition of arylboronic acids to N-heteroaryl ketones: synthesis of α-hydroxy acids. Chem Sci 2023; 14:1606-1612. [PMID: 36794198 PMCID: PMC9906643 DOI: 10.1039/d2sc05907j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 01/11/2023] [Indexed: 01/14/2023] Open
Abstract
The enantioselective addition of arylboronic acids to N-heteroaryl ketones provides a convenient access to chiral α-heteroaryl tertiary alcohols, yet addition reactions of this type have been challenging due to catalyst deactivation. In this report, an efficient rhodium-catalyzed addition of arylboronic acids to N-heteroaryl ketones is established, affording a variety of valuable α-heteroaryl alcohols with excellent functional group compatibility. The employment of the WingPhos ligand containing two anthryl groups is crucial for this transformation. In particular, a range of chiral benzoxazolyl-substituted tertiary alcohols were formed with excellent ee values and yields by employing a Rh loading as low as 0.3 mol%, which can serve as a practical protocol to furnish a series of chiral α-hydroxy acids after hydrolysis.
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Affiliation(s)
- Jinbin Zhu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 China
| | - Zhenyue Li
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 China
| | - Jiaqi Li
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 China
| | - Duanshuai Tian
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Ling Ling Rd Shanghai 200032 China
| | - Ronghua Xu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Ling Ling Rd Shanghai 200032 China
| | - Zhiyong Tan
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 China
| | - Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University Ganzhou 341000 China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Ling Ling Rd Shanghai 200032 China
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7
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Lin L, Zhang XJ, Xu X, Zhao Y, Shi Z. Ru 3 (CO) 12 -Catalyzed Modular Assembly of Hemilabile Ligands by C-H Activation of Phosphines with Isocyanates. Angew Chem Int Ed Engl 2023; 62:e202214584. [PMID: 36479789 DOI: 10.1002/anie.202214584] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/17/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Hemilabile ligands have been applied extensively in transition metal catalysis, but preparations of these molecules typically require multistep synthesis. Here, modular assembly of diverse phosphine-amide ligands, including related axially chiral compounds, is first reported through ruthenium-catalyzed C-H activation of phosphines with isocyanate directed by phosphorus(III) atoms. High reactivity and regioselectivity can be obtained by using a Ru3 (CO)12 catalyst with a mono-N-protected amino acid ligand. This transformation significantly expands the pool of phosphine-amide ligands, some of which have shown excellent efficiency for asymmetric catalysis. More broadly, the discovery constitutes a proof of principle for facile construction of hemilabile ligands directly from the parent monodentate phosphines by C-H activation with ideal atom, step and redox economy. Several dinuclear ruthenium complexes were characterized by single-crystal X-ray diffraction analysis revealing the key mechanistic features of this transformation.
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Affiliation(s)
- Lin Lin
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Xue-Jun Zhang
- Department of Orthopedic Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Xinyu Xu
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yue Zhao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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8
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Abstract
We report an intermolecular Ni-catalyzed reductive coupling of aryl iodides and isatins to form 3-hydroxyoxindoles. In contrast to common metal-mediated methods, sec-butanol is used as a mild stoichiometric reductant resulting in benign waste products. This formal 1,2-addition reaction is facilitated by a 1,5-diaza-3,7-diphosphacyclooctane (P2N2) ligand. Two Ni(0)-P2N2 species are prepared and found to be catalytically active, supporting a mechanistic hypothesis that this reaction proceeds by a modified carbonyl-Heck-type pathway.
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Affiliation(s)
- Amrah Nasim
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Gilian T Thomas
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Jeffrey S Ovens
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
| | - Stephen G Newman
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 10 Marie Curie, Ottawa, Ontario K1N 6N5, Canada
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9
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Isatin Bis-Indole and Bis-Imidazothiazole Hybrids: Synthesis and Antimicrobial Activity. Molecules 2022; 27:molecules27185781. [PMID: 36144518 PMCID: PMC9505023 DOI: 10.3390/molecules27185781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/30/2022] [Accepted: 09/05/2022] [Indexed: 11/17/2022] Open
Abstract
Isatin and its derivatives are important heterocycles found in nature and present in numerous bioactive compounds which possess various biological activities. Moreover, it is an essential building block in organic synthesis. The discovery of novel compounds active against human pathogenic bacteria and fungi is an urgent need, and the isatin may represent the suitable scaffold in the design of biologically relevant antimicrobials. A small library of 18 isatin hybrids was synthetized and evaluated for their antimicrobial potential on three reference strains: S. aureus, E. coli, both important human pathogens infamous for causing community- and hospital-acquired severe systemic infections; and C. albicans, responsible for devastating invasive infections, mainly in immunocompromised individuals. The study highlighted two lead compounds, 6k and 6m, endowed with inhibitory activity against S. aureus at very low concentrations (39.12 and 24.83 µg/mL, respectively).
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10
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Wu Z, Wu Z, Zhang W, Gu Q, You S. Rh(
III
)‐Catalyzed Enantioselective Intermolecular Aryl C−H Bond Addition to Aldehydes. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200553] [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)
- Zhi‐Jie Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road Shanghai 201210 China
| | - Zhuo Wu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Wen‐Wen Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Qing Gu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Physical Science and Technology, ShanghaiTech University, 100 Haike Road Shanghai 201210 China
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11
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Straminelli L, Vicentini F, Di Sabato A, Montone CM, Cavaliere C, Rissanen K, Leonelli F, Vetica F. Stereoselective Synthesis of Spiro-Decalin Oxindole Derivatives via Sequential Organocatalytic Michael–Domino Michael/Aldol Reaction. J Org Chem 2022; 87:10454-10461. [PMID: 35875873 PMCID: PMC9365295 DOI: 10.1021/acs.joc.2c01046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A highly stereoselective procedure for the synthesis
of spiro-polycyclic
oxindoles bearing five contiguous stereogenic centers including two
tetrasubstituted carbons has been developed. Under sequential organocatalysis
performed by a pyrrolidine-based organocatalyst and DBU, a highly
atom-economical Michael–domino Michael/aldol reaction sequence
was optimized, yielding variously functionalized spiro-decalin oxindoles
with excellent stereoselectivity (>99:1 dr, up to 92% ee).
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Affiliation(s)
- Leonardo Straminelli
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Francesco Vicentini
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Antonio Di Sabato
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Carmela Maria Montone
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Chiara Cavaliere
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Kari Rissanen
- Department of Chemistry, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - Francesca Leonelli
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Fabrizio Vetica
- Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
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12
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Korch KM, Hayes JC, Kim RS, Sampson J, Kelly AT, Watson DA. Selected Ion Monitoring Using Low-Cost Mass Spectrum Detectors Provides a Rapid, General, and Accurate Method for Enantiomeric Excess Determination in High-Throughput Experimentation. ACS Catal 2022; 12:6737-6745. [PMID: 36743967 PMCID: PMC9894240 DOI: 10.1021/acscatal.2c01628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
High-Throughput Experimentation (HTE) workflows are efficient means of surveying a broad array of chiral catalysts in the development of catalytic asymmetric reactions. However, use of traditional HPLC-UV/vis methodology to determine enantiomeric excess (ee) from the resulting reactions is often hampered by co-elution of other reaction components, resulting in erroneous ee determination when crude samples are used, and ultimately requiring product isolation prior to ee analysis. In this study, using four published reactions selected as model systems, we demonstrate that the use of LC-MS, SFC-MS, and selected ion monitoring (SIM) mass chromatography provides a highly accurate means to determine ee of products in crude reaction samples using commonplace, low-cost MS detectors. By using ion selection, co-eluting signals can be deconvoluted to provide accurate integrations of the target analytes. We also show that this method is effective for samples lacking UV/vis chromophores, making it ideal for HTE workflows in asymmetric catalysis.
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Affiliation(s)
- Katerina M. Korch
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Jacob C. Hayes
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Raphael S. Kim
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Jessica Sampson
- High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States,Corresponding Authors Donald A. Watson – Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States, ; Jessica Sampson – High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States. ; Austin T. Kelly – High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States,
| | - Austin T. Kelly
- High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States,Corresponding Authors Donald A. Watson – Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States, ; Jessica Sampson – High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States. ; Austin T. Kelly – High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States,
| | - Donald A. Watson
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States,Corresponding Authors Donald A. Watson – Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States, ; Jessica Sampson – High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States. ; Austin T. Kelly – High Throughput Experimentation Center, University of Delaware, Newark, Delaware 19716, United States,
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13
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Shen H, Du Y, Kan J, Su W. Synthesis of 3-substituted 2-oxindoles from secondary α-bromo-propionanilides via palladium-catalyzed intramolecular cyclization. Org Biomol Chem 2022; 20:3589-3597. [PMID: 35420109 DOI: 10.1039/d2ob00480a] [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
In contrast to aromatic halides, coupling reactions involving oxidative addition of alkyl halides, especially secondary or tertiary halides, to transition metals tend to be more challenging. Herein a palladium-catalyzed intramolecular cyclization of α-bromo-propionanilides has been developed, delivering a series of 3-substituted 2-oxindoles in high yields. The method features easy to prepare starting materials, broad substrate scope and excellent functional group tolerance. A detailed mechanistic investigation has been performed.
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Affiliation(s)
- Hui Shen
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Yu Du
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Jian Kan
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China
| | - Weiping Su
- College of Chemistry & Materials Science, Fujian Normal University, Fuzhou 350007, P. R. China. .,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou 350002, P. R. China.,Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou 350108, P. R. China
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14
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Muthusamy S, Prabu A. BF 3·OEt 2 catalyzed decarbonylative arylation/C-H functionalization of diazoamides with arylaldehydes: synthesis of substituted 3-aryloxindoles. Org Biomol Chem 2022; 20:2209-2216. [PMID: 35229865 DOI: 10.1039/d2ob00003b] [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
A metal-free BF3·OEt2 catalyzed direct decarbonylative arylation of diazoamides with readily accessible aryl aldehydes under an open-air atmosphere was developed to afford 3-aryloxindoles via 1,2-aryl migration with high selectivity. The reaction offers an efficient pathway for 3-arylation of diazoamides under relatively mild conditions, which shows a high level of functional group tolerance of both electron-donating and electron-withdrawing groups with a broad substrate scope. 3-Aryloxindoles were also obtained by a substituent-controlled chemo- and site-selective C-H bond functionalization of unprotected salicylaldehyde derivatives.
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Affiliation(s)
| | - Ammasi Prabu
- School of Chemistry, Bharathidasan University, Tiruchirappalli-620 024, India.
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15
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Rossi R, Ciofalo M. Palladium-Catalysed Intermolecular Direct C–H Bond Arylation of Heteroarenes with Reagents Alternative to Aryl Halides: Current State of the Art. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220201124008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Abstract: This unprecedented review with 322 references provides a critical up-to-date picture of the Pd-catalysed intermolecular direct C–H bond arylation of heteroarenes with arylating reagents alternative to aryl halides that include aryl sulfonates (aryl triflates, tosylates, mesylates, and imidazole-1-sulfonates), diaryliodonium salts, [(diacetoxy)iodo]arenes, arenediazonium salts, 1-aryltriazenes, arylhydrazines and N’-arylhydrazides, arenesulfonyl chlorides, sodium arenesulfinates, arenesulfinic acids, and arenesulfonohydrazides. Particular attention has been paid to summarise the preparation of the various arylating reagents and to highlight the practicality, versatility, and limitations of the various developed arylation protocols, also comparing their results with those achieved in analogous Pd-catalysed arylation reactions involving the use of aryl halides as electrophiles. Mechanistic proposals have also been briefly summarised and discussed. However, data concerning Pd-catalysed direct C–H bond arylations involving the C–H bonds of aryl substituents of the examined heteroarene derivatives have not been taken into account.
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Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 3, I-56124 Pisa, Italy
| | - Maurizio Ciofalo
- Dipartimento di Scienze Agrarie, Alimentari e Forestali, University of Palermo, Viale delle Scienze, Edificio 4, I-90128, Palermo, Italy
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16
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Jiang B, Shi SL. Recent Progress in Upgrading of Alcohol and Amine via Asymmetric Dehydrogenative Coupling. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202207002] [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]
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17
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An approach for preparing 3,3-disubstituted oxindole from acyclic tetrasubstituted aldehyde: Total synthesis of (-)-coerulescine & (-)-coixspirolactam A. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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18
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Khan J, Tyagi A, Yadav N, Mahato R, Hazra CK. Lambert Salt-Initiated Development of Friedel-Crafts Reaction on Isatin to Access Distinct Derivatives of Oxindoles. J Org Chem 2021; 86:17833-17847. [PMID: 34874162 DOI: 10.1021/acs.joc.1c02058] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Herein, a mild metal-free and efficacious route for the synthesis of biologically important 3-aryl oxindole derivatives is described. Using Lambert salt-initiated hydroarylation of isatin, a diverse array of monoarylated products, symmetrical/unsymmetrical double-arylated products, and deoxygenated hydroarylated products could be synthesized from the single starting substrate in good to excellent yields. A preliminary mechanistic study revealed that the reaction proceeds via a monoarylated product followed by a nucleophilic attack by another electron-rich arene nucleophile under mild conditions. The potential of newly synthesized symmetric/unsymmetric 3,3-disubstituted oxindole, 3-substituted 3-hydroxy oxindoles, 3,3-di(indolyl)indolin-2-ones, and α-aryl oxindoles as valuable building blocks is further illustrated.
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Affiliation(s)
- Jabir Khan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Aparna Tyagi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naveen Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Rina Mahato
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Chinmoy K Hazra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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19
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Evolution in heterodonor P-N, P-S and P-O chiral ligands for preparing efficient catalysts for asymmetric catalysis. From design to applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214120] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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20
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Cai Y, Ruan L, Rahman A, Shi S. Fast Enantio‐ and Chemoselective Arylation of Ketones with Organoboronic Esters Enabled by Nickel/N‐Heterocyclic Carbene Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuan Cai
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Lin‐Xin Ruan
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Abdul Rahman
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shi‐Liang Shi
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Pharmacy Fudan University Shanghai 201203 China
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21
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Cai Y, Ruan L, Rahman A, Shi S. Fast Enantio‐ and Chemoselective Arylation of Ketones with Organoboronic Esters Enabled by Nickel/N‐Heterocyclic Carbene Catalysis. Angew Chem Int Ed Engl 2021; 60:5262-5267. [DOI: 10.1002/anie.202015021] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Yuan Cai
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Lin‐Xin Ruan
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Abdul Rahman
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shi‐Liang Shi
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Pharmacy Fudan University Shanghai 201203 China
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22
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Mandai H, Shiomoto R, Fujii K, Mitsudo K, Suga S. Kinetic Resolution of Tertiary Alcohols by Chiral DMAP Derivatives: Enantioselective Access to 3-Hydroxy-3-substituted 2-Oxindoles. Org Lett 2020; 23:1169-1174. [DOI: 10.1021/acs.orglett.0c03956] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Hiroki Mandai
- Department of Pharmacy, Faculty of Pharmacy, Gifu University of Medical Science, 4-3-3 Nijigaoka, Kani, Gifu 509-0293, Japan
| | - Ryuhei Shiomoto
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Kazuki Fujii
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Koichi Mitsudo
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| | - Seiji Suga
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
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23
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Phan Thi Thanh N, Dang Thi Thu H, Tone M, Inoue H, Iwasa S. Synthesis of Oxindole Derivatives via Intramolecular C–H Insertion of Diazoamides Using Ru(II)-Pheox Catalyst. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131481] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Zhao J, Song X, Li D, Zhao J, Qu J, Zhou Y. Intramolecular Dehydrogenative Coupling Approach to 2‐Oxindoles Using Fe(OAc)
2
/NaI/Na
2
S
2
O
8. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Junyan Zhao
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 116024 Dalian P.R. China
| | - Xun Song
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 116024 Dalian P.R. China
| | - Dong Li
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 116024 Dalian P.R. China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology 116024 Dalian P.R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology 116024 Dalian P.R. China
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals Department of Pharmaceutical Sciences School of Chemical Engineering Dalian University of Technology 116024 Dalian P.R. China
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25
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Dimethyl sulfoxide-aided copper(0)-catalyzed intramolecular decarbonylative rearrangement of N-aryl isatins leading to acridones. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.10.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Gao B, Xu S, Du T, Li Y. Transition‐Metal‐Free Catalyzed Dearomatizative Esterification of Indole. ChemistrySelect 2020. [DOI: 10.1002/slct.201904715] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Bao Gao
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
| | - Shasha Xu
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
| | - Tianri Du
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
| | - Yahui Li
- Key Laboratory of Agri-Food Safety of Anhui ProvinceAnhui Agricultural University Hefei 230036 China
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27
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Ni C, Gao J, Fang X. Cu(i)-Catalyzed asymmetric intramolecular addition of aryl pinacolboronic esters to unactivated ketones: enantioselective synthesis of 2,3-dihydrobenzofuran-3-ol derivatives. Chem Commun (Camb) 2020; 56:2654-2657. [DOI: 10.1039/c9cc09653a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An (S,S)-QuinoxP*-supported Cu(i) catalyst has been disclosed for highly enantioselective intramolecular addition of aryl pinacolboronic esters to unactivated ketones under mild reaction conditions.
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Affiliation(s)
- Chunjie Ni
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Jihui Gao
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
| | - Xianjie Fang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- China
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28
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Recent advances in Pd-catalyzed asymmetric addition reactions. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2020.01.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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29
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Chandran R, Prabhakaran SM, Kumar V, Thakar SR, Tiwari KN. Approaches towards 3‐Substituted‐3‐hydroxyoxindole and Spirooxindole‐Pyran Derivatives in a Reaction of Isatin with Acetylacetone in Aqueous Media. ChemistrySelect 2019. [DOI: 10.1002/slct.201903301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- R. Chandran
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER)Raebareli Transit Campus Bijnour-Sisendi Road Lucknow – 226002 INDIA
| | - S. M. Prabhakaran
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER)Raebareli Transit Campus Bijnour-Sisendi Road Lucknow – 226002 INDIA
| | - Vaneet Kumar
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER)Raebareli Transit Campus Bijnour-Sisendi Road Lucknow – 226002 INDIA
| | - Snehal Rajendra Thakar
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER)Raebareli Transit Campus Bijnour-Sisendi Road Lucknow – 226002 INDIA
| | - Keshri Nath Tiwari
- Department of Medicinal ChemistryNational Institute of Pharmaceutical Education and Research (NIPER)Raebareli Transit Campus Bijnour-Sisendi Road Lucknow – 226002 INDIA
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30
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Moku B, Fang WY, Leng J, Li L, Zha GF, Rakesh KP, Qin HL. Rh-Catalyzed Highly Enantioselective Synthesis of Aliphatic Sulfonyl Fluorides. iScience 2019; 21:695-705. [PMID: 31733515 PMCID: PMC6889689 DOI: 10.1016/j.isci.2019.10.051] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 10/14/2019] [Accepted: 10/24/2019] [Indexed: 11/25/2022] Open
Abstract
Rh-catalyzed, highly enantioselective (up to 99.8% ee) synthesis of aliphatic sulfonyl fluorides was accomplished. This protocol provides a portal to a class of novel 2-aryl substituted chiral sulfonyl fluorides, which are otherwise extremely difficult to access. This asymmetric synthesis has the feature of mild conditions, excellent functional group compatibility, and wide substrate scope (51 examples) generating a wide array of structurally unique chiral β-arylated sulfonyl fluorides for sulfur(VI) fluoride exchange (SuFEx) click reaction and drug discovery.
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Affiliation(s)
- Balakrishna Moku
- State Key Laboratory of Silicate Materials for Architectures, and School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, P. R. China
| | - Wan-Yin Fang
- State Key Laboratory of Silicate Materials for Architectures, and School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, P. R. China
| | - Jing Leng
- State Key Laboratory of Silicate Materials for Architectures, and School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, P. R. China
| | - Linxian Li
- Ming Wai Lau Centre for Reparative Medicine, Karolinska Institute, Hong Kong, China
| | - Gao-Feng Zha
- State Key Laboratory of Silicate Materials for Architectures, and School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, P. R. China; Ming Wai Lau Centre for Reparative Medicine, Karolinska Institute, Hong Kong, China
| | - K P Rakesh
- State Key Laboratory of Silicate Materials for Architectures, and School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, P. R. China
| | - Hua-Li Qin
- State Key Laboratory of Silicate Materials for Architectures, and School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, P. R. China.
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31
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Rhodium-catalysed direct hydroarylation of alkenes and alkynes with phosphines through phosphorous-assisted C-H activation. Nat Commun 2019; 10:3539. [PMID: 31387999 PMCID: PMC6684548 DOI: 10.1038/s41467-019-11420-5] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 07/15/2019] [Indexed: 01/01/2023] Open
Abstract
Biarylphosphines have been widely applied as ligands in various synthetic methods, especially in transition-metal-catalysed carbon-carbon and carbon-heteroatom bond cross-coupling reactions. Based on the outstanding properties of the parent scaffolds, a general method for in situ modification of the commercial tertiary phosphine ligands to access a series of ligands is in high demand. Here we show that a rhodium-catalysed system is introduced for the hydroarylation of alkenes and alkynes with tertiary phosphines through P(III)-chelation assisted C-H activation. A series of ligand libraries containing alkyl and alkenyl substituted groups with different steric and electronic properties are obtained in high yields. Furthermore, several experimental studies are performed to uncover the key mechanistic features of the linear-selective hydroarylation of alkenes and branch-selective hydroarylation of alkynes. Dialkyl biaryl phosphines find wide application in catalysis as ligands. Here, the authors report a rhodium-catalysed hydroarylation of alkenes and alkynes with tertiary phosphines through P(III)-chelation assisted C-H activation affording a library of functionalized phosphines which hold potential in catalytic applications.
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32
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Wang P, Ma GR, Yu SL, Da CS. Enantioselective vinylation of aldehydes with the vinyl Grignard reagent catalyzed by magnesium complex of chiral BINOLs. Chirality 2018; 31:79-86. [DOI: 10.1002/chir.23038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 10/29/2018] [Accepted: 11/01/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Pei Wang
- School of Basic Medical Sciences; Ningxia Medical University; Yinchuan China
| | - Guo-Rong Ma
- School of Basic Medical Sciences; Ningxia Medical University; Yinchuan China
| | - Sheng-Li Yu
- Institute of Biochemistry and Molecular Biology, School of Life Sciences; Lanzhou University; Lanzhou China
| | - Chao-Shan Da
- Institute of Biochemistry and Molecular Biology, School of Life Sciences; Lanzhou University; Lanzhou China
- State Key Laboratory of Organic Chemistry; Lanzhou University; Lanzhou China
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33
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Qiu B, Li XT, Zhang JY, Zhan JL, Huang SP, Xu T. Catalytic Enantioselective Synthesis of 3,4-Polyfused Oxindoles with Quaternary All-Carbon Stereocenters: A Rh-Catalyzed C-C Activation Approach. Org Lett 2018; 20:7689-7693. [PMID: 30495964 DOI: 10.1021/acs.orglett.8b03412] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The first Rh-catalyzed enantioselective synthesis of a 3,4-polyfused oxindole ring system enabled by carboacylation of acrylic amides based on C-C activation is reported. This transformation provides a new entry to access 3,4-polyfused oxindoles bearing quaternary stereocenters. Tri- to pentacyclic 3,4-fused oxindoles were asymmetrically generated in good yields (up to 95%) with good to excellent enantioselectivity (88%-97% ee). Application in the first total synthesis of xylanigripones A was completed in 6 steps with a 14% overall yield.
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Affiliation(s)
- Bo Qiu
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy , Ocean University of China , and Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003 , China
| | - Xiao-Tong Li
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy , Ocean University of China , and Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003 , China
| | - Jian-Yu Zhang
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy , Ocean University of China , and Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003 , China
| | - Jun-Ling Zhan
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy , Ocean University of China , and Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003 , China
| | - Shuang-Ping Huang
- Department of Chemistry & Chemical Engineering , Taiyuan University of Technology , Taiyuan 030024 , China
| | - Tao Xu
- Key Laboratory of Marine Drugs, Ministry of Education; School of Medicine and Pharmacy , Ocean University of China , and Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003 , China.,Open Studio for Druggability Research of Marine Natural Products , Qingdao National Laboratory for Marine Science and Technology , 1 Wenhai Road , Aoshanwei, Jimo, Qingdao 266237 , China
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34
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Wu S, Guo W, Wang T, Xie Q, Wang J, Liu G. Formation of Tertiary Alcohol via Chelation-Assisted Nickel(II)-Catalyzed Addition of Arylboronic Acids to Unactivated 1-(Quinolin-8-yl)ethan-1-one. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Shutao Wu
- Department of Chemistry; College of Science; Tianjin University; Tianjin 300350 People's Republic of China
| | - Weijie Guo
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic hybrid Functional Material Chemistry; College of Chemistry; Tianjin Normal University, Tianjin; 300387 People's Republic of China
| | - Tao Wang
- Department of Chemistry; College of Science; Tianjin University; Tianjin 300350 People's Republic of China
| | - Qingxiao Xie
- Department of Chemistry; College of Science; Tianjin University; Tianjin 300350 People's Republic of China
| | - Jianhui Wang
- Department of Chemistry; College of Science; Tianjin University; Tianjin 300350 People's Republic of China
| | - Guiyan Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules; Key Laboratory of Inorganic-Organic hybrid Functional Material Chemistry; College of Chemistry; Tianjin Normal University, Tianjin; 300387 People's Republic of China
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35
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Critical view on the recent enantioselective synthesis of alcohols, amines and related molecules having tertiary benzylic stereocenter. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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36
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Kondoh A, Aoki T, Terada M. Organocatalytic Arylation of α-Ketoesters Based on Umpolung Strategy: Phosphazene-Catalyzed SN
Ar Reaction Utilizing [1,2]-Phospha-Brook Rearrangement. Chemistry 2018; 24:13110-13113. [DOI: 10.1002/chem.201803218] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules; Graduate School of Science; Tohoku University; Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Takuma Aoki
- Department of Chemistry; Graduate School of Science; Tohoku University; Aramaki Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry; Graduate School of Science; Tohoku University; Aramaki Aoba-ku Sendai 980-8578 Japan
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37
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Ji W, Liu YA, Liao X. Transition-Metal-Free Synthesis of N-Hydroxy Oxindoles by an Aza-Nazarov-Type Reaction Involving Azaoxyallyl Cations. Angew Chem Int Ed Engl 2018; 55:13286-13289. [PMID: 27709823 DOI: 10.1002/anie.201607177] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Indexed: 01/15/2023]
Abstract
A novel transition-metal-free method to construct N-hydroxy oxindoles by an aza-Nazarov-type reaction involving azaoxyallyl cation intermediates is described. A variety of functional groups were tolerated under the weak basic reaction conditions and at room temperature. A one-pot process was also developed to make the reaction even more practical. This method provides alternative access to oxindoles and their biologically active derivatives.
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Affiliation(s)
- Wenzhi Ji
- School of Pharmaceutical Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, China
| | - Yahu A Liu
- Medicinal Chemistry, Genomics Institute of the Novartis Research Foundation, San Diego, CA, 92121, USA
| | - Xuebin Liao
- School of Pharmaceutical Sciences, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Tsinghua University, China.
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38
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Reddy Panyam PK, Ugale B, Gandhi T. Palladium(II)/N-Heterocyclic Carbene Catalyzed One-Pot Sequential α-Arylation/Alkylation: Access to 3,3-Disubstituted Oxindoles. J Org Chem 2018; 83:7622-7632. [PMID: 29882669 DOI: 10.1021/acs.joc.8b00264] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Rationally designed fluorene-based mono- and bimetallic Pd-PEPPSI complexes were synthesized and demonstrated to be effective for the one-pot sequential α-arylation/alkylation of oxindoles. This streamlined approach offers efficient access to functionalized 3,3-disubstituted oxindoles in excellent yields (up to 89%) under mild reaction conditions.
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Affiliation(s)
| | - Bharat Ugale
- Department of Chemistry , Indian Institute of Technology Ropar , Rupnagar , Punjab 140001 , India
| | - Thirumanavelan Gandhi
- Department of Chemistry, School of Advanced Sciences , VIT University , Vellore 632014 , India
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39
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Chang CA, Uang TY, Jian JH, Zhou MY, Chen ML, Kuo TS, Wu PY, Wu HL. Efficient and Enantioselective Rhodium(I)-Catalyzed Arylation of α-Ketoesters: Synthesis of (S
)-Flutriafol. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Chiung-An Chang
- Department of Chemistry; National Taiwan Normal University; No. 88, Section 4, Tingzhou Road Taipei 11677 Taiwan
| | - Tsung-Ying Uang
- Department of Chemistry; National Taiwan Normal University; No. 88, Section 4, Tingzhou Road Taipei 11677 Taiwan
| | - Jia-Hong Jian
- Department of Chemistry; National Taiwan Normal University; No. 88, Section 4, Tingzhou Road Taipei 11677 Taiwan
| | - Meng-Yi Zhou
- Department of Chemistry; National Taiwan Normal University; No. 88, Section 4, Tingzhou Road Taipei 11677 Taiwan
| | - Ming-Liang Chen
- Department of Chemistry; National Taiwan Normal University; No. 88, Section 4, Tingzhou Road Taipei 11677 Taiwan
| | - Ting-Shen Kuo
- Department of Chemistry; National Taiwan Normal University; No. 88, Section 4, Tingzhou Road Taipei 11677 Taiwan
| | - Ping-Yu Wu
- Oleader Technologies, Co., Ltd.; 1F., No. 8, Aly. 29, Ln. 335, Chenggong Rd., Hukou Township 30345 Hsinchu Taiwan
| | - Hsyueh-Liang Wu
- Department of Chemistry; National Taiwan Normal University; No. 88, Section 4, Tingzhou Road Taipei 11677 Taiwan
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40
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Zhang YY, Chen H, Jiang X, Liang H, He X, Zhang Y, Chen X, He W, Li Y, Qiu L. Nickel(II)-catalyzed addition reaction of arylboronic acids to isatins. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Borrego LG, Recio R, Alcarranza M, Khiar N, Fernández I. An Efficient and Practical Method for the Enantioselective Synthesis of Tertiary Trifluoromethyl Carbinols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701212] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Lorenzo G. Borrego
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
| | - Rocío Recio
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
| | - Manuel Alcarranza
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
| | - Noureddine Khiar
- Departamento de Química Orgánica y Biológica, Instituto de Investigaciones Químicas (IIQ); C.S.I.C-Universidad de Sevilla. C/; Américo Vespucio 49 41092 Seville Spain
| | - Inmaculada Fernández
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
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42
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Jia T, Cao P, Liao J. Enantioselective synthesis of gem-diarylalkanes by transition metal-catalyzed asymmetric arylations (TMCAAr). Chem Sci 2018; 9:546-559. [PMID: 29629119 PMCID: PMC5869807 DOI: 10.1039/c7sc03404k] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Accepted: 11/07/2017] [Indexed: 12/21/2022] Open
Abstract
To date, enantiomerically enriched molecules containing gem(1,1)-diaryl containing tertiary or quaternary stereogenic centers have been readily accessed by transition metal-catalyzed enantioselective or stereoconvergent aryl transfer reactions.
Chiral gem(1,1)-diaryl containing tertiary or quaternary stereogenic centers are present in many natural products and important pharmacophores. While numerous catalytic asymmetric methods enable access to 1,1-diaryl motifs, transition metal-catalyzed asymmetric arylations (TMCAAr) are one of the most powerful methods to prepare enantiopure gem-diarylalkane compounds. The main methodology includes enantioselective 1,2- or 1,4-additions across C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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O, C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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N and C
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C bonds by arylmetallic reagents; aryl cross-couplings of olefins, benzylic (pseudo)halides and aziridines; asymmetric aryl substitution reactions of allylic substrates; and isotopic benzylic C–H arylation.
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Affiliation(s)
- Tao Jia
- Natural Products Research Center , Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , People's Republic of China . .,College of Chemistry and Materials Science , Sichuan Normal University , Chengdu 610068 , People's Republic of China .
| | - Peng Cao
- College of Chemistry and Materials Science , Sichuan Normal University , Chengdu 610068 , People's Republic of China .
| | - Jian Liao
- Natural Products Research Center , Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , People's Republic of China . .,College of Chemical Engineering , Sichuan University , Chengdu 610065 , People's Republic of China
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43
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Fleming JT, Wills C, Waddell PG, Harrington RW, Higham LJ. A comparison of MOP-phosphonite ligands and their applications in Rh(i)- and Pd(ii)-catalysed asymmetric transformations. Dalton Trans 2018; 45:15660-15670. [PMID: 27711828 DOI: 10.1039/c6dt02390h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Six chiral MOP-phosphonites have been synthesised and compared via experimental and computational methods in an effort to quantify their differing structural and electronic profiles. They were found to be electron-poor ligands in comparison to their arylphosphine analogues and have a larger trans influence in square planar Pt(ii) complexes. Four [Rh(LP)(η2:η2-cod)Cl] complexes were synthesised and characterised by NMR, HRMS and X-ray crystallography. Two [Rh(LP)2]BF4 complexes were prepared where one ligand acts as a chelating P,C-π-donor; detailed NMR studies demonstrated a hemilabile η6-coordination mode, which in one case was confirmed by X-ray crystallography. Rh(i) complexes were used as catalysts in asymmetric hydrogenation and hydroformylation reactions and in the addition of phenyl boronic acid to an isatin. Pd(ii) complexes were successfully employed in asymmetric Suzuki-Miyaura cross-coupling reactions yielding binaphthyl products. Two [Pd(LP)2Cl2] complexes were synthesised and characterised by X-ray crystallography, both adopting cis orientations, with one of the complexes crystallising as two pseudo-polymorphs.
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Affiliation(s)
- James T Fleming
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Corinne Wills
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Paul G Waddell
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Ross W Harrington
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| | - Lee J Higham
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
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44
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Cyclization and oxidation of o -bromophenylacetamides for the synthesis of oxindoles and isoindigoes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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45
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46
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Bisht G, Chaudhari MB, Gupte VS, Gnanaprakasam B. Ru-NHC Catalyzed Domino Reaction of Carbonyl Compounds and Alcohols: A Short Synthesis of Donaxaridine. ACS OMEGA 2017; 2:8234-8252. [PMID: 31457366 PMCID: PMC6645123 DOI: 10.1021/acsomega.7b01152] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/06/2017] [Indexed: 05/31/2023]
Abstract
Direct α-alkylation of amides and the synthesis of C3-alkylated 3-hydroxyindolin-2-one/2-substituted-2-hydroxy-3,4-dihydronaphthalen-1(2H)-one derivatives from 2-oxindole/1-teralone were reported using primary alcohols in the presence of Ru-NHC catalyst in a one pot condition under the borrowing hydrogen method. In the case of inert conditions, 2-oxindole/1-teralone exclusively forms the C3-alkylated product. Whereas, allowing this reaction mixture to occur under an air atmosphere predominantly forms C3-alkylated 3-hydroxyindolin-2-one via domino C-H alkylation and aerobic C-H hydroxylation. This Ru-NHC catalyst is easily accessible, air stable, and phosphine free. Using this method, synthesis of 2-oxindole based natural products such as Donaxaridine was accomplished.
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47
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Jung H, Lee A, Kim J, Kim H, Baik MH. Regiodivergent Conjugate Addition Controlled by Rhodium(I) and Palladium(II) Catalysts: A Combined Computational and Experimental Study. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700628] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hoimin Jung
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 South Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Ansoo Lee
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Jin Kim
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Hyunwoo Kim
- Center for Nanomaterials and Chemical Reactions; Institute for Basic Science (IBS); Daejeon 34141 South Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations; Institute for Basic Science (IBS); Daejeon 34141 South Korea
- Department of Chemistry; Korea Advanced Institute of Science and Technology (KAIST); Daejeon 34141 South Korea
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48
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Duan J, Kwong FY. A Palladium-Catalyzed α-Arylation of Oxindoles with Aryl Tosylates. J Org Chem 2017; 82:6468-6473. [PMID: 28539045 DOI: 10.1021/acs.joc.7b00855] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A palladium-catalyzed monoselective C3 arylation of 2-oxindoles with aryl tosylates is described. With the Pd/CM-phos catalyst system, the corresponding 3-arylated oxindoles can be obtained in good to excellent yields (≤97%). The reaction conditions are mild (using 0.5 mol % Pd in general and KF as a base), and functional groups such as methyl ester, NH amido, and enolizable keto moieties are found to be compatible.
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Affiliation(s)
- Jindian Duan
- Department of Applied Biology and Chemical Technology and SKL of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Kowloon, Hong Kong
| | - Fuk Yee Kwong
- Department of Applied Biology and Chemical Technology and SKL of Chirosciences, The Hong Kong Polytechnic University , Hung Hom, Kowloon, Hong Kong.,Department of Chemistry, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong
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49
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Karmakar U, Das D, Samanta R. Iridium-Catalysed Cascade Synthesis of Oxindoles Using Diazo Compounds: A Quick Entry to C-7-Functionalized Oxindoles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700214] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ujjwal Karmakar
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
| | - Debapratim Das
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
| | - Rajarshi Samanta
- Department of Chemistry; Indian Institute of Technology Kharagpur; 721302 Kharagpur India
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50
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Montesinos-Magraner M, Vila C, Blay G, Fernández I, Muñoz MC, Pedro JR. Hydroxy-Directed Enantioselective Hydroxyalkylation in the Carbocyclic Ring of Indoles. Org Lett 2017; 19:1546-1549. [DOI: 10.1021/acs.orglett.7b00354] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Marc Montesinos-Magraner
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot, València 46100, Spain
| | - Carlos Vila
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot, València 46100, Spain
| | - Gonzalo Blay
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot, València 46100, Spain
| | - Isabel Fernández
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot, València 46100, Spain
| | - M. Carmen Muñoz
- Departament
de Física Aplicada, Universitat Politècnica de València, València 46022, Spain
| | - José R. Pedro
- Departament
de Química Orgànica, Facultat de Química, Universitat de València, Burjassot, València 46100, Spain
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