1
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Venkatesh R, Narayan AC, Kandasamy J. Synthesis of deoxybenzoins from β-alkoxy styrenes and arylboronic acids via palladium-catalyzed regioselective Heck-arylation reactions. Org Biomol Chem 2024; 22:5193-5197. [PMID: 38864361 DOI: 10.1039/d4ob00616j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Palladium-catalyzed synthesis of deoxybenzoin derivatives from styryl ethers and arylboronic acids is reported. The reaction proceeds under mild conditions in the presence of TEMPO and provides the desired products in good to excellent yields. Simple operation, broad substrate scope, and functional group tolerance are the salient features of the developed methodology.
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Affiliation(s)
- Rapelly Venkatesh
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh-221005, India.
| | - Aswathi C Narayan
- Department of Chemistry, Pondicherry University, Pondicherry-605014, India.
| | - Jeyakumar Kandasamy
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh-221005, India.
- Department of Chemistry, Pondicherry University, Pondicherry-605014, India.
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2
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Suzuki H, Moro R, Matsuda T. Palladium-Catalyzed anti-Michael-Type (Hetero)arylation of Acrylamides. J Am Chem Soc 2024; 146:13697-13702. [PMID: 38742920 DOI: 10.1021/jacs.4c00841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
This paper reports a direct α-(hetero)arylation of acrylamides through an inverse electron-demand nucleophilic addition, specifically an anti-Michael-type addition. The introduction of a quinolyl directing group facilitates the nucleophilic addition of (hetero)arenes to the α-position of acrylamides. The quinolyl directing group effectively suppresses undesired β-hydrogen elimination and is removable for subsequent derivatization. The presented method provides an atom economical synthesis of α-(hetero)arylamide with a high degree of functional group tolerance.
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Affiliation(s)
- Hirotsugu Suzuki
- Tenure-Track Program for Innovative Research, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan
| | - Ryota Moro
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Takanori Matsuda
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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3
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Liao W, Du H, Chen M, Xiong Y, Zhou H, Qin T, Liu B. Sequential regioselective arylation of pyrazolones with diaryliodonium salts. Org Biomol Chem 2024; 22:708-713. [PMID: 38165289 DOI: 10.1039/d3ob01854g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The introduction of aromatic substituents into organic compounds significantly alters their physical and chemical characteristics. Yet, achieving precise control over the site-selectivity of arylation continues to pose a considerable challenge. We present here a controllable method for the site-selective mono-, di-, and triarylation of pyrazolone with diaryliodonium salts. The method showcases robustness, flexibility, and excellent compatibility with a broad range of functional groups. It enables control over both the site of arylation and the number of aryl additions. Specifically, three of the four substitutable positions in pyrazolone can be selectively arylated, effectively producing four products under controlled conditions. Additionally, the method supports one-pot sequential arylation, leading to an array of products with diverse aromatic substituents. Control experiments revealed the specific conditions of each reaction step.
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Affiliation(s)
- Wenbo Liao
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, PR China.
| | - Hairui Du
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, PR China.
| | - Mingxiu Chen
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, PR China.
| | - Yan Xiong
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, PR China.
| | - Heye Zhou
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, PR China.
| | - Tao Qin
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, PR China.
| | - Bin Liu
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, PR China.
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4
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Wei X, Wang K, Fang W. Highly efficient α-arylation of aryl ketones with aryl chlorides by using bulky imidazolylidene-ligated oxazoline palladacycles. Org Biomol Chem 2023; 21:3858-3862. [PMID: 37093227 DOI: 10.1039/d3ob00354j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
α-Aryl derivatives of carbonyl compounds are important building blocks. Herein, we presented an efficient catalytic system for the α-arylation of aryl ketones with inactive aryl chlorides by firstly using N,N'-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene (IPr)-ligated chiral oxazoline palladacycles, and tolerated a wide range of substrates at low catalyst loadings, leading to the desired products in good to excellent yields.
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Affiliation(s)
- Xian Wei
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Kun Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
| | - Weiwei Fang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China.
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5
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Shandu MP, Lamola JL, Holzapfel CW, Maumela MC, Moshapo PT. Application of
P
‐Bridged Biaryl Phosphines in Pd‐Catalyzed
α
‐Arylation Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202203712] [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)
- Malibongwe P. Shandu
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
| | - Jairus L. Lamola
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
| | - Cedric W. Holzapfel
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
| | - Munaka Christopher Maumela
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
- Research and Technology (R&T) Sasol (Pty) Ltd 1 Klasie Havenga Road Sasolburg 1947 South Africa
| | - Paseka T. Moshapo
- Department of Chemical Sciences University of Johannesburg Cnr Kingsway Avenue and University Road PO Box 524, Auckland Park 2006 Johannesburg South Africa
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6
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Husen S, Jha P, Singh A, Kumar R. Direct Use of Phosphonium Salts for Alkylation of p-Quinols: Formal α-Arylation of Carbonyls via a 5-Membered Betaine-Type Intermediate. Org Lett 2022; 24:6925-6929. [PMID: 36129805 DOI: 10.1021/acs.orglett.2c02638] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Unlike phosphonium ylides used extensively for C═C bond formation, herein we disclose the direct use of phosphonium salts for site-selective alkylation to p-quinols via a 5-membered betaine-type intermediate. This strategy provides a novel and general approach for the synthesis of α-(m-aminoaryl) esters, amides and ketones under ambient conditions. The reaction proceeds through in situ generation of P-ylide, alkylation and aromatization. Reaction is highly compatible with diverse functional phosphonium salts and amines.
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Affiliation(s)
- Saddam Husen
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Priyankar Jha
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India
| | - Akansha Singh
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Ravindra Kumar
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226031, UP, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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7
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Sreedharan R, Pal PK, Panyam PKR, Priyakumar UD, Gandhi T. Synthesis of α‐aryl ketones by harnessing the non‐innocence of toluene and its derivatives: Enhancing the acidity of methyl arenes by a Brønsted base and their mechanistic aspects. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ramdas Sreedharan
- Vellore Institute of Technology: VIT University Department of Chemistry, School of Advanced Sciences INDIA
| | - Pradeep Kumar Pal
- International Institute of Information Technology Hyderabad Centre for Computational Natural Sciences and Bioinformatics INDIA
| | - Pradeep Kumar Reddy Panyam
- Vellore Institute of Technology: VIT University Department of Chemistry, School of Advanced Sciences INDIA
| | - U Deva Priyakumar
- International Institute of Information Technology Hyderabad Centre for Computational Natural Sciences and Bioinformatics INDIA
| | - Thirumanavelan Gandhi
- VIT University Materials Chemistry Division, School of Advanced Sciences VIT University 632014 Vellore INDIA
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8
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Chen Z, Gu C, Yuen OY, So CM. Palladium-catalyzed chemoselective direct α-arylation of carbonyl compounds with chloroaryl triflates at the C-Cl site. Chem Sci 2022; 13:4762-4769. [PMID: 35655875 PMCID: PMC9067565 DOI: 10.1039/d1sc06701j] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 03/02/2022] [Indexed: 01/13/2023] Open
Abstract
This study described palladium-catalyzed chemoselective direct α-arylation of carbonyl compounds with chloroaryl triflates in the Ar–Cl bond. The Pd/SelectPhos system showed excellent chemoselectivity toward the Ar–Cl bond in the presence of the Ar–OTf bond with a broad substrate scope and excellent product yields. The electronic and steric hindrance offered by the –PR2 group of the ligand with the C2-alkyl group was found to be the key factor affecting the reactivity and chemoselectivity of the α-arylation reaction. The chemodivergent approach was also successfully employed in the synthesis of flurbiprofen and its derivatives (e.g., –OMe and –F). Palladium-catalyzed chemoselective direct α-arylation of carbonyl compounds with chloroaryl triflates in the Ar–Cl bond is reported. The effects of –PR2 and C2-alkyl groups of the ligands are investigated using experimental and computational methods.![]()
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Affiliation(s)
- Zicong Chen
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University Kowloon Hong Kong SAR China
| | - Changxue Gu
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University Kowloon Hong Kong SAR China
| | - On Ying Yuen
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University Kowloon Hong Kong SAR China
| | - Chau Ming So
- State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University Kowloon Hong Kong SAR China .,The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057 Guangdong China
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9
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Salameh N, Anastasiou I, Ferlin F, Minio F, Chen S, Santoro S, Liu P, Gu Y, Vaccaro L. Heterogeneous palladium-catalysed intramolecular C(sp3) H α-arylation for the green synthesis of oxindoles. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Li LP, Han JQ, Liu YT, Yang F, Wu X, Xie JH, Zhou QL. A Three-Step Process to Facilitate the Enantioselective Assembly of Cis-Fused Octahydrophenanthrenes with a Quaternary Stereocenter. Org Lett 2022; 24:2590-2595. [PMID: 35357843 DOI: 10.1021/acs.orglett.2c00451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A three-step process for the enantioselective assembly of cis-fused octahydrophenanthrenes with a quaternary stereocenter is reported. This synthetic strategy relies on a regioselective γ-alkylation, a one-pot sequence of asymmetric hydrogenation and oxidation, and an intramolecular enolate arylation to facilitate the rapid and enantioselective construction of cis-fused octahydrophenanthrene scaffolds with an arylated all-carbon quaternary stereocenter concisely and efficiently.
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Affiliation(s)
- Lin-Ping Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Jia-Qi Han
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Yun-Ting Liu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Fan Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Xiong Wu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300070, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, Tianjin, 300071, China.,Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300070, China
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11
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Cao T, Zhu L, Huang J, Yang Z. Palladium-Catalyzed Intramolecular Diarylation of 1,3-Diketone in Total Synthesis of (±)-Spiroaxillarone A. Org Lett 2022; 24:1491-1495. [DOI: 10.1021/acs.orglett.2c00153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tingting Cao
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Lei Zhu
- College of Pharmacy, Third Military Medical University, Chongqing 200038, China
| | - Jun Huang
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Zhen Yang
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055, China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- Shenzhen Bay Laboratory, Shenzhen 518055, China
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12
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Chen Y, Zhu S. Modular construction of α-furanyl ketones via semi-pinacol rearrangement-mediated ring expansion. Org Chem Front 2022. [DOI: 10.1039/d2qo01324j] [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
An efficient semi-pinacol rearrangement strategy of enynals involving a metal carbene intermediate has been developed, which allows the practical synthesis of various functionalized α-furanyl ketones in moderate to good yields under mild reaction conditions.
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Affiliation(s)
- Yang Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China
- Guangdong Youmei Institute of Intelligent Biomanufacturing, Foshan 528225, PR China
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13
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Gu Y, Zhang Z, Wang YE, Dai Z, Yuan Y, Xiong D, Li J, Walsh PJ, Mao J. Benzylic Aroylation of Toluenes Mediated by a LiN(SiMe 3) 2/Cs + System. J Org Chem 2021; 87:406-418. [PMID: 34958592 DOI: 10.1021/acs.joc.1c02446] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Chemoselective deprotonative functionalization of benzylic C-H bonds is challenging, because the arene ring contains multiple aromatic C(sp2)-H bonds, which can be competitively deprotonated and lead to selectivity issues. Recently it was found that bimetallic [MN(SiMe3)2 M = Li, Na]/Cs+ combinations exhibit excellent benzylic selectivity. Herein, is reported the first deprotonative addition of toluenes to Weinreb amides mediated by LiN(SiMe3)2/CsF for the synthesis of a diverse array of 2-arylacetophenones. Surprisingly, simple methyl benzoates also react with toluenes under similar conditions to form 2-arylacetophenones without double addition to give tertiary alcohol products. This finding greatly increases the practicality and impact of this chemistry. Some challenging substrates with respect to benzylic deprotonations, such as fluoro and methoxy substituted toluenes, are selectively transformed to 2-aryl acetophenones. The value of benzylic deprotonation of 3-fluorotoluene is demonstrated by the synthesis of a key intermediate in the preparation of Polmacoxib.
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Affiliation(s)
- Yuanyun Gu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Zhen Zhang
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yan-En Wang
- College of Science, Hebei Agricultural University, Baoding 071001, P. R. China
| | - Ziteng Dai
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Yaqi Yuan
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Dan Xiong
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Jie Li
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, P. R. China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Jianyou Mao
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
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14
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Lin YC, Yen KW, Lin HJ, Yang YC, Wu YK. Haloarene-guided cascade arylation of cyclic vinylogous esters under palladium catalysis. Chem Commun (Camb) 2021; 57:12119-12122. [PMID: 34719697 DOI: 10.1039/d1cc05006k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A method is presented for the synthesis of diaryl cyclic vinylogous esters. The sequence of C(sp3)-H arylation events is programed under the differentiated reactivity of the aryl halides, and the optimized reaction system is effectively diverted from producing dihomo-arylated products. The site selectivity of the second arylation is notably modulated by the substitution pattern of the substrates.
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Affiliation(s)
- Yi-Ching Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Ko-Wang Yen
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Hsuan-Jen Lin
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Yi-Chi Yang
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
| | - Yen-Ku Wu
- Department of Applied Chemistry, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan.
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15
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Venkatesh R, Singh AK, Lee YR, Kandasamy J. Palladium-catalyzed synthesis of α-aryl acetophenones from styryl ethers and aryl diazonium salts via regioselective Heck arylation at room temperature. Org Biomol Chem 2021; 19:7832-7837. [PMID: 34549234 DOI: 10.1039/d1ob01503f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Preparation of α-aryl acetophenones from styryl ethers and aryldiazonium salts is described. The reaction is catalyzed by palladium acetate at room temperature in the absence of ligand and base. The developed method is highly attractive in terms of reaction conditions, substrate scope, functional group tolerance and yields. Synthetic applications of the present method are demonstrated by preparing α-aryl indoles and 3-aryl isocoumarin from styryl ethers.
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Affiliation(s)
- Rapelly Venkatesh
- Department of chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh-221005.
| | - Adesh Kumar Singh
- Department of chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh-221005.
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541 Republic of Korea
| | - Jeyakumar Kandasamy
- Department of chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh-221005.
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16
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Tamizharasan N, Hallur G, Suresh P. Palladium-Catalyzed Direct α-Arylation of Indane-1,3-dione to 2-Substituted Indene-1,3-diones. J Org Chem 2021; 86:12318-12325. [PMID: 34406781 DOI: 10.1021/acs.joc.1c01149] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A straightforward and feasible palladium-catalyzed direct α-arylation of indane-1,3-dione to 2-substituted aryl/heteroaryl indene-1,3-diones has been disclosed for the first time. Optimization of reaction conditions identified tBu-XPhos as a preferred ligand for the bis(acetonitrile)dichloropalladium(II) catalyst. A broad spectrum of aryl iodides and aryl triflates containing electron-donating, electron-withdrawing, and sterically hindered substituents gave an excellent yield for the quick access α-arylated 1,3-diones library.
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Affiliation(s)
- Natarajan Tamizharasan
- Supramolecular and Catalysis Lab, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625021, Tamil Nadu, India.,Medicinal Chemistry Department, Jubilant Biosys Ltd., Bangalore - 560022, Karnataka, India
| | - Gurulingappa Hallur
- Medicinal Chemistry Department, Jubilant Biosys Ltd., Bangalore - 560022, Karnataka, India
| | - Palaniswamy Suresh
- Supramolecular and Catalysis Lab, Department of Natural Products Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai - 625021, Tamil Nadu, India
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17
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Terlizzi L, Cola I, Raviola C, Fagnoni M, Protti S. Dyedauxiliary Group Strategy for the α-Functionalization of Ketones and Esters. ACS ORGANIC & INORGANIC AU 2021; 1:68-71. [PMID: 36855752 PMCID: PMC9954345 DOI: 10.1021/acsorginorgau.1c00020] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The synthesis of α-arylketones and α-arylazo esters has been achieved in mixed organic-aqueous media under photocatalyst- and metal-free conditions via visible light activation of arylazo sulfones in the presence of enol silyl ethers and ketene silyl acetals, respectively. The process took place efficiently and exhibits an excellent tolerance for a broad variety of functional groups.
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18
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Wang M, Wang W, Li D, Wang WJ, Zhan R, Shao LD. α-C(sp 3)-H Arylation of Cyclic Carbonyl Compounds. NATURAL PRODUCTS AND BIOPROSPECTING 2021; 11:379-404. [PMID: 34097248 PMCID: PMC8275813 DOI: 10.1007/s13659-021-00312-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 05/24/2021] [Indexed: 05/05/2023]
Abstract
α-C(sp3)-H arylation is an important type of C-H functionalization. Various biologically significant natural products, chemical intermediates, and drugs have been effectively prepared via C-H functionalization. Cyclic carbonyl compounds comprise of cyclic ketones, enones, lactones, and lactams. The α-C(sp3)-H arylation of these compounds have been exhibited high efficiency in forming C(sp3)-C(sp2) bonds, played a crucial role in organic synthesis, and attracted majority of interests from organic and medicinal communities. This review focused on the most significant advances including methods, mechanism, and applications in total synthesis of natural products in the field of α-C(sp3)-H arylations of cyclic carbonyl compounds in recent years.
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Affiliation(s)
- Mei Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Wei Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Dashan Li
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Wen-Jing Wang
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China
| | - Rui Zhan
- School of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming, 650050, China.
| | - Li-Dong Shao
- Yunnan Key Laboratory of Southern Medicinal Utilization, School of Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650050, China.
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19
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Doi R, Hayashi K, Sato Y. Palladium-catalyzed Decarboxylative α-Polyfluoroarylation of Ketones. CHEM LETT 2021. [DOI: 10.1246/cl.210092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Ryohei Doi
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido 060-0812, Japan
| | - Kanako Hayashi
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido 060-0812, Japan
| | - Yoshihiro Sato
- Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido 060-0812, Japan
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20
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Ostrowska S, Scattolin T, Nolan SP. N-Heterocyclic carbene complexes enabling the α-arylation of carbonyl compounds. Chem Commun (Camb) 2021; 57:4354-4375. [PMID: 33949497 DOI: 10.1039/d1cc00913c] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The considerable importance of α-arylated carbonyl compounds, which are widely used as final products or as key intermediates in the pharmaceutical industry, has prompted numerous research groups to develop efficient synthetic strategies for their preparation in recent decades. In this context, the α-arylation of carbonyl compounds catalyzed by transition-metal complexes have been particularly helpful in constructing this motif. As illustrated in this contribution, tremendous advances have taken place using palladium- and nickel-NHC (NHC = N-heterocyclic carbene) complexes as pre-catalysts for the arylation of a wide range of ketones, aldehydes, esters and amides with electron-rich, electron-neutral, electron-poor, and sterically hindered aryl halides or pseudo-halides. Despite significant progress, especially in asymmetric α-arylations promoted by chiral NHC ligands, there are numerous challenges which have and continue to encourage further studies on this topic. Some of these are presented in this report.
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Affiliation(s)
- Sylwia Ostrowska
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Thomas Scattolin
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium.
| | - Steven P Nolan
- Department of Chemistry and Center for Sustainable Chemistry, Ghent University, Krijgslaan 281 (S-3), 9000, Ghent, Belgium.
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21
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Ren C, Wang T, Zhang Y, Peng D, Liu X, Wu Q, Liu X, Luo S. Photoinduced Activation of Unactivated C(
sp
3
)‐H Bonds and Acylation Reactions. ChemistrySelect 2021. [DOI: 10.1002/slct.202100225] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chen‐Chao Ren
- Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Hangzhou 310014 P.R. China
| | - Tian‐Qi Wang
- Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Hangzhou 310014 P.R. China
| | - Yu Zhang
- Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Hangzhou 310014 P.R. China
| | - Dao Peng
- Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Hangzhou 310014 P.R. China
| | - Xiao‐Qing Liu
- Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Hangzhou 310014 P.R. China
| | - Qing‐An Wu
- Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Hangzhou 310014 P.R. China
| | - Xue‐Fen Liu
- Hangzhou Normal University Qianjiang College Hangzhou 310006 P.R. China
| | - Shu‐Ping Luo
- Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Hangzhou 310014 P.R. China
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22
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Li C, Ragab SS, Liu G, Tang W. Enantioselective formation of quaternary carbon stereocenters in natural product synthesis: a recent update. Nat Prod Rep 2021; 37:276-292. [PMID: 31515549 DOI: 10.1039/c9np00039a] [Citation(s) in RCA: 107] [Impact Index Per Article: 35.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Covering: 2013-2018 Natural products bearing quaternary carbon stereocenters have attracted tremendous interest from the synthetic community due to their diverse biological activities and fascinating molecular architectures. However, the construction of these molecules in an enantioselective fashion remains a long-standing challenge because of the lack of efficient asymmetric catalytic methods for installing these motifs. The rapid progress in the development of new-generation efficient chiral catalysts has opened the door for several asymmetric reactions, such as Michael addition, dearomative cyclization, polyene cyclization, α-arylation, cycloaddition, allylation, for the construction of quaternary carbon stereocenters in a highly enantioselective fashion. These asymmetric catalytic methods have greatly facilitated the synthesis of complex natural products with improved output and overall efficiency. In this concise review, we highlight the progress in the last six years in complex natural product synthesis, in which at least one quaternary carbon stereocenter has been constructed via asymmetric catalytic technologies, with particular emphasis on the analysis of the stereochemical model of each enantioselective transformation.
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Affiliation(s)
- Chengxi Li
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China.
| | - Sherif Shaban Ragab
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China. and Photochemistry Department, Chemical Industries Research Division, National Research Centre, Dokki, 12622, Giza, Egypt
| | - Guodu Liu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China. and Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, 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 Road, Shanghai 200032, China.
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23
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Saini G, Kapur M. Palladium-catalyzed functionalizations of acidic and non-acidic C(sp 3)-H bonds - recent advances. Chem Commun (Camb) 2021; 57:1693-1714. [PMID: 33492315 DOI: 10.1039/d0cc06892f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tremendous upsurge has been seen in the recent decade for the proximal and remote functionalization of activated and unactivated substrates via palladium redox pathways. This feature article discusses some of the recent reports on direct as well as indirect C(sp3)-H functionalization via cross-coupling reactions under palladium catalysis. Activated substrates (possessing acidic C(sp3)-H) including enones, ketones, aldehydes, silylenol ethers, esters, silyl ketene acetals, amides, cyano, α-amino esters, and O-carbamates, capable of undergoing cross-coupling reactions at the α-, β-, γ-, δ- and ε-positions, will be discussed. To overcome the challenging task of achieving regioselectivity, a variety of innovative modifications have been reported. The reports of C-H activations based on directing group, and as native functionality have been illustrated at the β-, γ- and δ-positions. Substrates such as α-amino esters, carbonyls, carboxylic acids and their derivatives, afford site-selective C(sp3)-H functionalization via varied-sized reactive metallacycles and are a unique class of substrates whose C(sp3)-H functionalizations were earlier considered as very difficult.
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Affiliation(s)
- Gaurav Saini
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India.
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India.
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24
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Li Z, Peng Y, Wu T. Palladium-Catalyzed Denitrative α-Arylation of Ketones with Nitroarenes. Org Lett 2021; 23:881-885. [DOI: 10.1021/acs.orglett.0c04104] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhirong Li
- The College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
| | - Yonggang Peng
- The College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
| | - Tao Wu
- The College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, P. R. China
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25
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Shepelenko KE, Soliev SB, Galushko AS, Chernyshev VM, Ananikov VP. Different effects of metal-NHC bond cleavage on the Pd/NHC and Ni/NHC catalyzed α-arylation of ketones with aryl halides. Inorg Chem Front 2021. [DOI: 10.1039/d0qi01411g] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Fundamental differences in the behavior of Pd/NHC and Ni/NHC catalytic systems in ketones α-arylation were elucidated and exploited.
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Affiliation(s)
| | | | - Alexey S. Galushko
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | | | - Valentine P. Ananikov
- Platov South-Russian State Polytechnic University (NPI)
- Russia
- Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
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26
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Vitale P, Cicco L, Perna FM, Capriati V. Introducing deep eutectic solvents in enolate chemistry: synthesis of 1-arylpropan-2-ones under aerobic conditions. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00297j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An environmentally friendly procedure for the generation of enolates from 1-arylpropan-2-ones, followed by functionalization with electrophiles and (hetero)aryl halides in deep eutectic solvents under aerobic conditions, is disclosed.
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Affiliation(s)
- Paola Vitale
- Dipartimento di Farmacia–Scienze del farmaco, Università di Bari “Aldo Moro”, Consorzio C.I.N.M.P.I.S, Via E. Orabona 4, I-70125, Bari, Italy
| | - Luciana Cicco
- Dipartimento di Farmacia–Scienze del farmaco, Università di Bari “Aldo Moro”, Consorzio C.I.N.M.P.I.S, Via E. Orabona 4, I-70125, Bari, Italy
| | - Filippo Maria Perna
- Dipartimento di Farmacia–Scienze del farmaco, Università di Bari “Aldo Moro”, Consorzio C.I.N.M.P.I.S, Via E. Orabona 4, I-70125, Bari, Italy
| | - Vito Capriati
- Dipartimento di Farmacia–Scienze del farmaco, Università di Bari “Aldo Moro”, Consorzio C.I.N.M.P.I.S, Via E. Orabona 4, I-70125, Bari, Italy
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27
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Nie XX, Huang YH, Wang P. Thianthrenation-Enabled α-Arylation of Carbonyl Compounds with Arenes. Org Lett 2020; 22:7716-7720. [DOI: 10.1021/acs.orglett.0c02913] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xiao-Xue Nie
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
| | - Yu-Hao Huang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
- CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, P. R. China
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28
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Fillmore B, Price J, Dean R, Brown AA, Decken A, Eisler S. Accessing the Ene-Imine Motif in 1 H-Isoindole, Thienopyrrole, and Thienopyridine Building Blocks. ACS OMEGA 2020; 5:22914-22925. [PMID: 32954140 PMCID: PMC7495751 DOI: 10.1021/acsomega.0c02282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 08/20/2020] [Indexed: 06/11/2023]
Abstract
A pathway to a range of diverse heterocycles was developed using a nucleophilic cyclization strategy. Lactams and ene-imines are accessed in a few steps from a common precursor, and these moieties are further elaborated to directly provide pyrroles or pyridines with extended conjugation. Reaction conditions are mild, and a broad range of structural types are available within a few steps.
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29
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Yang F, Zou D, Chen S, Wang H, Zhao Y, Zhao L, Li L, Li J, Walsh PJ. Transition Metal‐Free Aroylation of Diarylmethanes with N‐Bn‐ N‐Boc Arylamides and N‐Acylpyrroles. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000622] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Fan Yang
- Department of PharmacySchool of MedicineZhejiang University City College No. 48, Huzhou Road Hangzhou 310015 People's Republic of China
| | - Dong Zou
- Department of PharmacySchool of MedicineZhejiang University City College No. 48, Huzhou Road Hangzhou 310015 People's Republic of China
| | - Shuguang Chen
- Roy and Diana Vagelos LaboratoriesDepartment of ChemistryUniversity of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
| | - Huan Wang
- Department of PharmacySchool of MedicineZhejiang University City College No. 48, Huzhou Road Hangzhou 310015 People's Republic of China
| | - Yichen Zhao
- Department of PharmacySchool of MedicineZhejiang University City College No. 48, Huzhou Road Hangzhou 310015 People's Republic of China
| | - Liyi Zhao
- Department of PharmacySchool of MedicineZhejiang University City College No. 48, Huzhou Road Hangzhou 310015 People's Republic of China
| | - Linlin Li
- Department of PharmacySchool of MedicineZhejiang University City College No. 48, Huzhou Road Hangzhou 310015 People's Republic of China
| | - Jie Li
- Department of PharmacySchool of MedicineZhejiang University City College No. 48, Huzhou Road Hangzhou 310015 People's Republic of China
| | - Patrick J. Walsh
- Roy and Diana Vagelos LaboratoriesDepartment of ChemistryUniversity of Pennsylvania 231 South 34th Street Philadelphia Pennsylvania 19104-6323 USA
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30
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Zhang J, Yang JD, Cheng JP. Diazaphosphinyl radical-catalyzed deoxygenation of α-carboxy ketones: a new protocol for chemo-selective C-O bond scission via mechanism regulation. Chem Sci 2020; 11:8476-8481. [PMID: 34123107 PMCID: PMC8163385 DOI: 10.1039/d0sc03220d] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 07/27/2020] [Indexed: 11/22/2022] Open
Abstract
C-O bond cleavage is often a key process in defunctionalization of organic compounds as well as in degradation of natural polymers. However, it seldom occurs regioselectively for different types of C-O bonds under metal-free mild conditions. Here we report a facile chemo-selective cleavage of the α-C-O bonds in α-carboxy ketones by commercially available pinacolborane under the catalysis of diazaphosphinane based on a mechanism switch strategy. This new reaction features high efficiency, low cost and good group-tolerance, and is also amenable to catalytic deprotection of desyl-protected carboxylic acids and amino acids. Mechanistic studies indicated an electron-transfer-initiated radical process, underlining two crucial steps: (1) the initiator azodiisobutyronitrile switches originally hydridic reduction to kinetically more accessible electron reduction; and (2) the catalytic phosphorus species upconverts weakly reducing pinacolborane into strongly reducing diazaphosphinane.
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Affiliation(s)
- Jingjing Zhang
- Department of Chemistry, Center of Basic Molecular Science, Tsinghua University Beijing 100084 China
| | - Jin-Dong Yang
- Department of Chemistry, Center of Basic Molecular Science, Tsinghua University Beijing 100084 China
| | - Jin-Pei Cheng
- Department of Chemistry, Center of Basic Molecular Science, Tsinghua University Beijing 100084 China
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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31
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Vasquez AM, Gurak JA, Joe CL, Cherney EC, Engle KM. Catalytic α-Hydroarylation of Acrylates and Acrylamides via an Interrupted Hydrodehalogenation Reaction. J Am Chem Soc 2020; 142:10477-10484. [PMID: 32379433 PMCID: PMC7293711 DOI: 10.1021/jacs.0c03040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The palladium-catalyzed, α-selective hydroarylation of acrylates and acrylamides is reported. Under optimized conditions, this method is highly tolerant of a wide range of substrates including those with base sensitive functional groups and/or multiple enolizable carbonyl groups. A detailed mechanistic study was undertaken, and the high selectivity of this transformation was shown to be enabled by the formation of a [PdII(Ar)(H)] intermediate, which performs selective hydride insertion into the β-position of α,β-unsaturated carbonyl compounds.
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Affiliation(s)
- Alena M. Vasquez
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - John A. Gurak
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Candice L. Joe
- Chemistry Development, Bristol-Myers Squibb, 1 Squibb Drive, New Brunswick, New Jersey 08903, United States
| | - Emily C. Cherney
- Discovery Chemistry, Bristol Myers Squibb, US Rt. 206 & Province Line Road, Princeton, New Jersey 08540, United States
| | - Keary M. Engle
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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32
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Wu T, Kang X, Bai H, Xiong W, Xu G, Tang W. Enantioselective Construction of Spiro Quaternary Carbon Stereocenters via Pd-Catalyzed Intramolecular α-Arylation. Org Lett 2020; 22:4602-4607. [DOI: 10.1021/acs.orglett.0c01129] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ting Wu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Xuehua Kang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Heng Bai
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Wenrui Xiong
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Guangqing Xu
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai 200032, China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou 310024, China
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33
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Bhattacharya D, Tomar R, Babu SA. Conversion of 2,3‐Dihydrobenzo[
b
][1,4]dioxine‐2‐carboxamides to 3‐Oxoquinolin‐2(1
H
)‐ones via Ring‐Opening and Formal 6‐
endo
‐trig Cyclization‐Involved Heck Reactions. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Debabrata Bhattacharya
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306 (India)
| | - Radha Tomar
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306 (India)
| | - Srinivasarao Arulananda Babu
- Department of Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O., Punjab, 140306 (India)
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34
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Chang YH, Peng WL, Chen IC, Hsu HY, Wu YK. Palladium-catalyzed α-arylation of indolin-3-ones. Chem Commun (Camb) 2020; 56:4660-4663. [PMID: 32211656 DOI: 10.1039/d0cc00435a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A method for the catalytic α-arylation of indolin-3-ones was developed. The catalytic system comprising Pd(dba)2 and PAd3 was found to be optimal for the transformation. The protocol features broad functional group compatibility in that a range of arylated indoxyl derivatives bearing a fully substituted carbon center was synthesized with high efficiency. A preliminary bioassay study revealed that the selected indole-substituted indolin-3-ones exhibit favorable cytotoxic activities against HCT-116 cancer cell line.
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Affiliation(s)
- Yu-Hsuan Chang
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
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35
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Um TW, Lee G, Shin S. Enantioselective Synthesis of Tertiary α,α-Diaryl Carbonyl Compounds Using Chiral N,N'-Dioxides under Umpolung Conditions. Org Lett 2020; 22:1985-1990. [PMID: 32045252 DOI: 10.1021/acs.orglett.0c00333] [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
Brønsted acid-catalyzed addition of the chiral N,N'-dioxide into ynamides generated enolonium ions in situ which underwent enantioselective alkylation by indoles, pyrroles, and phenols, without racemization of the formed tertiary center. This external oxidant approach allows for the use of unmodified nucleophiles and does not leave trace groups from the oxidant, which significantly increases the synthetic efficiency and the product diversity. Furthermore, the byproduct of the N,N'-dioxide could be efficiently recycled into an optically pure form.
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Affiliation(s)
- Tae-Woong Um
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Girim Lee
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
| | - Seunghoon Shin
- Department of Chemistry, Research Institute for Natural Sciences and Center for New Directions in Organic Synthesis (CNOS), Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul 04763, Korea
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36
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Huang WH, Huang GB, Zhu WR, Weng J, Lu G. Transition metal-free synthesis of α-aryl ketones via oxyallyl cation capture with arylboronic acids. Org Chem Front 2020. [DOI: 10.1039/d0qo00447b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
α-Arylated ketones were accessed via oxyallyl cation capture with arylboronic acids in good yields with broad substrate tolerance.
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Affiliation(s)
- Wei-Hua Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Gong-Bin Huang
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Wen-Run Zhu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Jiang Weng
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
| | - Gui Lu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- P. R. China
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37
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Wang P, Zhang J, Han L, Bi S, Liu T. Substituent-dependent generation of tricyclic frameworks by the rhodium-catalyzed cycloisomerization of homopropargyl allene-alkynes: a theoretical study. Dalton Trans 2020; 49:7406-7419. [DOI: 10.1039/d0dt00508h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Polycyclic compounds having biological activities can be modified by employing different substituents.
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Affiliation(s)
- Ping Wang
- Department of Chemistry and Chemical Engineering
- Jining University
- Qufu 273155
- China
- School of Chemistry and Chemical Engineering
| | - Jing Zhang
- Department of Chemistry and Chemical Engineering
- Jining University
- Qufu 273155
- China
- School of Chemistry and Chemical Engineering
| | - Lingli Han
- Department of Chemistry and Chemical Engineering
- Jining University
- Qufu 273155
- China
- School of Chemistry and Chemical Engineering
| | - Siwei Bi
- School of Chemistry and Chemical Engineering
- Qufu Normal University
- Qufu 273165
- China
| | - Tao Liu
- Department of Chemistry and Chemical Engineering
- Jining University
- Qufu 273155
- China
- School of Chemistry and Chemical Engineering
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38
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Yang YC, Lin YC, Wu YK. Palladium-Catalyzed Cascade Arylation of Vinylogous Esters Enabled by Tris(1-adamantyl)phosphine. Org Lett 2019; 21:9286-9290. [DOI: 10.1021/acs.orglett.9b03071] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yi-Chi Yang
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Yi-Ching Lin
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
| | - Yen-Ku Wu
- Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu 30010, Taiwan
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39
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Hu XQ, Lichte D, Rodstein I, Weber P, Seitz AK, Scherpf T, Gessner VH, Gooßen LJ. Ylide-Functionalized Phosphine (YPhos)–Palladium Catalysts: Selective Monoarylation of Alkyl Ketones with Aryl Chlorides. Org Lett 2019; 21:7558-7562. [DOI: 10.1021/acs.orglett.9b02830] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xiao-Qiang Hu
- Faculty of Chemistry and Biochemistry, Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Dominik Lichte
- Faculty of Chemistry and Biochemistry, Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Ilja Rodstein
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Philip Weber
- Faculty of Chemistry and Biochemistry, Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Ann-Katrin Seitz
- Faculty of Chemistry and Biochemistry, Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Thorsten Scherpf
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Viktoria H. Gessner
- Faculty of Chemistry and Biochemistry, Chair of Inorganic Chemistry II, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
| | - Lukas J. Gooßen
- Faculty of Chemistry and Biochemistry, Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstr. 150, 44801 Bochum, Germany
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40
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Chen X, Chen Z, So CM. Exploration of Aryl Phosphates in Palladium-Catalyzed Mono-α-arylation of Aryl and Heteroaryl Ketones. J Org Chem 2019; 84:6337-6346. [DOI: 10.1021/acs.joc.9b00669] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiangmeng Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Zicong Chen
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Chau Ming So
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
- The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, People’s Republic of China
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41
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Yang H, Tang W. Efficient Enantioselective Syntheses of Chiral Natural Products Facilitated by Ligand Design. CHEM REC 2019; 20:23-40. [PMID: 31025478 DOI: 10.1002/tcr.201900003] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/27/2019] [Indexed: 12/23/2022]
Abstract
The employment of enantioselective transition-metal-catalyzed transformations as key steps in asymmetric natural product syntheses have attracted considerable attention in recent years owing to their versatile synthetic utilities, mild conditions and high efficiency in chirality generation. The chiral catalysts or supporting ligands are believed to be crucial for the requisite reactivity and enantioselectivity. Therefore, the rational design of chiral ligands is at the heart of developing new asymmetric transition-metal catalyzed reactions and provides an avenue to the asymmetric synthesis of natural products. Our group has been engaged in the development of transition-metal-catalyzed enantioselective cross-coupling, cyclization and other related reactions and the application of these methodologies to natural product syntheses. In this account, we summarized our recent synthetic efforts towards the efficient total syntheses of several different types of natural products including terpenes, alkaloids and polyketides facilitated by the design of a series of versatile P-chiral phosphorous ligands.
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Affiliation(s)
- He Yang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai, 200032
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Ling Ling Road, Shanghai, 200032
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42
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Shukla D, Babu SA. Pd‐Catalyzed Diastereoselective Intramolecular Amide
α
‐C−H Arylation in Sterically Hindered Monospirooxindole Motifs. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801732] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Dipti Shukla
- Department Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O. Punjab 140306 India
| | - Srinivasarao Arulananda Babu
- Department Chemical SciencesIndian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, SAS Nagar, Mohali, Manauli P.O. Punjab 140306 India
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43
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Zheng P, Zhai Y, Zhao X, Xu T. Palladium-Catalyzed Cross-Coupling of gem-Bis(boronates) with Aryl Halides: An Alternative To Access Quaternary α-Aryl Aldehydes. Org Lett 2019; 21:393-396. [PMID: 30592427 DOI: 10.1021/acs.orglett.8b03560] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The compounds with a quaternary α-aryl aldehyde skeleton are important units in organic chemistry. Previously, the aryl group and carbonyl group are introduced in a stepwise manner. Herein, a novel route is developed to construct the quaternary α-aryl aldehydes with gem-bis(boronates) as precursors, in which the two groups are installed simultaneously. The gem-bis(boronates) are readily available from ketones; as a result, this methodology provides a more general strategy to produce the quaternary α-aryl aldehydes with broad scopes and synthetic convenience.
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Affiliation(s)
- Purui Zheng
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering , Tongji University , 1239 Siping Road , Shanghai , 200092 , P. R. of China
| | - Yujie Zhai
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering , Tongji University , 1239 Siping Road , Shanghai , 200092 , P. R. of China
| | - Xiaoming Zhao
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering , Tongji University , 1239 Siping Road , Shanghai , 200092 , P. R. of China
| | - Tao Xu
- Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering , Tongji University , 1239 Siping Road , Shanghai , 200092 , P. R. of China
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44
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Rao X, Li N, Bai H, Dai C, Wang Z, Tang W. Efficient Synthesis of (−)-Corynoline by Enantioselective Palladium-Catalyzed α-Arylation with Sterically Hindered Substrates. Angew Chem Int Ed Engl 2018; 57:12328-12332. [DOI: 10.1002/anie.201807302] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 07/30/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Xiaofeng Rao
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Naikai Li
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Heng Bai
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Chaodi Dai
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Zheng Wang
- Informatics and Technology; Astra Zeneca China; Shanghai China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
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45
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Rao X, Li N, Bai H, Dai C, Wang Z, Tang W. Efficient Synthesis of (−)-Corynoline by Enantioselective Palladium-Catalyzed α-Arylation with Sterically Hindered Substrates. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807302] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaofeng Rao
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Naikai Li
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Heng Bai
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Chaodi Dai
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
| | - Zheng Wang
- Informatics and Technology; Astra Zeneca China; Shanghai China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; 345 Ling Ling Rd Shanghai 200032 China
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46
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Biosca M, Jackson M, Magre M, Pàmies O, Norrby PO, Diéguez M, Guiry PJ. Enantioselective Synthesis of Sterically Hindered Tertiary α-Aryl Oxindoles via Palladium-Catalyzed Decarboxylative Protonation. An Experimental and Theoretical Mechanistic Investigation. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800507] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maria Biosca
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/Marcel.lí Domingo, 1 43007 Tarragona Spain
| | - Mark Jackson
- Centre for Synthesis and Chemical Biology, School of Chemistry; University College Dublin; Belfield, Dublin 4 Ireland
| | - Marc Magre
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/Marcel.lí Domingo, 1 43007 Tarragona Spain
| | - Oscar Pàmies
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/Marcel.lí Domingo, 1 43007 Tarragona Spain
| | - Per-Ola Norrby
- Early Product Development; Pharmaceutical Sciences, IMED Biotech Unit, AstraZeneca, Pepparedsleden 1; SE-431 83 Mölndal Sweden
| | - Montserrat Diéguez
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/Marcel.lí Domingo, 1 43007 Tarragona Spain
| | - Patrick J. Guiry
- Centre for Synthesis and Chemical Biology, School of Chemistry; University College Dublin; Belfield, Dublin 4 Ireland
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47
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Wang Y, Xie F, Lin B, Cheng M, Liu Y. Synthetic Approaches to Tetracyclic Indolines as Versatile Building Blocks of Diverse Indole Alkaloids. Chemistry 2018; 24:14302-14315. [DOI: 10.1002/chem.201800775] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Revised: 03/29/2018] [Indexed: 01/14/2023]
Affiliation(s)
- Yanshi Wang
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Fukai Xie
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery; Ministry of Education; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
- Institute of Drug Research in Medicine Capital of China; Benxi 117000 P. R. China
- Wuya College of Innovation; Shenyang Pharmaceutical University; Shenyang 110016 P. R. China
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48
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Johansson Seechurn CCC, Gazić Smilović I, Colacot T, Zanotti-Gerosa A, Časar Z. Development of concise two-step catalytic approach towards lasofoxifene precursor nafoxidine. Bioorg Med Chem 2018; 26:2691-2697. [PMID: 29678534 DOI: 10.1016/j.bmc.2018.04.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/06/2018] [Accepted: 04/09/2018] [Indexed: 10/17/2022]
Abstract
We have elaborated a two-step catalytic approach to nafoxidine, a key precursor to lasofoxifene. Firstly, an efficient α-arylation of 6-methoxy-3,4-dihydronaphthalen-1(2H)-one with chlorobenzene was developed, which operates at low 0.1 mol% Pd-132 catalyst loading in the presence of 1.9 equivalents of sodium tert-butoxide at 60 °C in 1,4-dioxane and provides 6-methoxy-2-phenyl-3,4-dihydronaphthalen-1(2H)-one in 90% yield. Secondly, we have demonstrated that 6-methoxy-2-phenyl-3,4-dihydronaphthalen-1(2H)-one can be converted to nafoxidine in 61% yield via CeCl3 promoted reaction with (4-(2-(pyrrolidin-1-yl)ethoxy)phenyl)lithium, which is formed in-situ from the corresponding arylbromide precursor and n-butyllithium. Altogether, the shortest two-step approach to nafoxidine from simple tetralone commodity starting material has been developed with overall 55% yield. The developed synthetic approach to nafoxidine has several beneficial aspects over the one used in the synthetic route primarily developed for the preparation of lasofoxifene.
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Affiliation(s)
| | - Ivana Gazić Smilović
- Lek Pharmaceuticals, d.d., Sandoz Development Center Slovenia, Verovškova ulica 57, 1526 Ljubljana, Slovenia
| | - Thomas Colacot
- Johnson Matthey Catalysis and Chiral Technologies, Nolte Drive, West Deptford, USA
| | - Antonio Zanotti-Gerosa
- Johnson Matthey Catalysis and Chiral Technologies, Cambridge Science Park, Milton Road, Cambridge, UK
| | - Zdenko Časar
- Lek Pharmaceuticals, d.d., Sandoz Development Center Slovenia, Verovškova ulica 57, 1526 Ljubljana, Slovenia; Faculty of Pharmacy, University of Ljubljana, Aškerčeva cesta 7, 1000 Ljubljana, Slovenia.
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49
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Kumar GS, Singh D, Kumar M, Kapur M. Palladium-Catalyzed Aerobic Oxidative Coupling of Allylic Alcohols with Anilines in the Synthesis of Nitrogen Heterocycles. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00287] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Gangam Srikanth Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Diksha Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India
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50
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Astarloa I, SanMartin R, Herrero MT, Domínguez E. Aqueous α-Arylation of Mono- and Diarylethanone Enolates at Low Catalyst Loading. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701596] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Iratxe Astarloa
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
| | - Raul SanMartin
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
| | - María Teresa Herrero
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
| | - Esther Domínguez
- Department of Organic Chemistry II, Faculty of Science and Technology; University of the Basque Country (UPV/EHU) Sarriena auzoa; z/g 48940 Leioa Spain
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