1
|
Khan J, Tyagi A, Samanta R, Hazra CK. Chemoselective deoxygenative α-arylation of carboxylic acids, amides, and esters: synthesis of anesthetic and anti-inflammatory compounds. Chem Commun (Camb) 2024; 60:10688-10691. [PMID: 39238418 DOI: 10.1039/d4cc03660c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
A metal-free strategy has been developed for the α-arylation of carboxylic acids, secondary amides, and esters employing arenes as key reagents. This process entails the Lewis-acid catalyzed reductive Friedel-Crafts alkylation of arenes utilizing α-ketoacids, facilitated by silane in HFIP solvent. The transformation exhibits exceptional functional group tolerance, enabling late-stage functionalization of natural products. This one-step protocol has been successfully used to synthesize commercially available drugs, such as adiphenine, piperidolate, derivatives of ketoprofen, ibuprofen, flurbiprofen, and the pesticide bromopropylate.
Collapse
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.
| | - Rima Samanta
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| | - Chinmoy Kumar Hazra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
| |
Collapse
|
2
|
Löffler J, Kaiser N, Knyszek D, Krischer F, Jörges M, Feichtner KS, Gessner VH. P,N-Coordinating Ylide-Functionalized Phosphines (NYPhos): A Ligand Platform for the Selective Monoarylation of Small Nucleophiles. Angew Chem Int Ed Engl 2024; 63:e202408947. [PMID: 38899792 DOI: 10.1002/anie.202408947] [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: 05/12/2024] [Revised: 06/03/2024] [Accepted: 06/06/2024] [Indexed: 06/21/2024]
Abstract
Palladium-catalyzed coupling reactions of small nucleophiles are of great interest, but challenging due to difficulties in selectivity control. Herein, we report the development of a new platform of P,N-ligands consisting of ylide-functionalized phosphines with aminophosphonium groups (NYPhos) to address this challenge. These phosphine ligands are easily accessible in a wide structural diversity with highly modular electronic and steric properties. Based on a family of 14 ligands the selective monoarylation of acetone as well as other challenging ketones and amides was accomplished with record-setting activities even for aryl chlorides at room temperature including late-stage functionalizations of drug molecules. Moreover, ammonia and other small primary amines could be coupled at mild conditions. Isolation and structure analyses of palladium complexes within the catalytic cycle confirmed that the P,N-coordination mode is necessary to achieve the observed selectivities. It also demonstrated the facile adjustability of the N-donor strength, which is beneficial for the targeted design of tailored P,N-ligands for future applications.
Collapse
Affiliation(s)
- Julian Löffler
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Nicolas Kaiser
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Daniel Knyszek
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Felix Krischer
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Mike Jörges
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Kai-Stephan Feichtner
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| | - Viktoria H Gessner
- Chair of Inorganic Chemistry II, Faculty of Chemistry and Biochemistry, Ruhr-University Bochum, Universitätsstr. 150, 44801, Bochum, Germany
| |
Collapse
|
3
|
Budiman YP, Perutz RN, Steel PG, Radius U, Marder TB. Applications of Transition Metal-Catalyzed ortho-Fluorine-Directed C-H Functionalization of (Poly)fluoroarenes in Organic Synthesis. Chem Rev 2024; 124:4822-4862. [PMID: 38564710 PMCID: PMC11046440 DOI: 10.1021/acs.chemrev.3c00793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/16/2024] [Accepted: 02/22/2024] [Indexed: 04/04/2024]
Abstract
The synthesis of organic compounds efficiently via fewer steps but in higher yields is desirable as this reduces energy and reagent use, waste production, and thus environmental impact as well as cost. The reactivity of C-H bonds ortho to fluorine substituents in (poly)fluoroarenes with metal centers is enhanced relative to meta and para positions. Thus, direct C-H functionalization of (poly)fluoroarenes without prefunctionalization is becoming a significant area of research in organic chemistry. Novel and selective methodologies to functionalize (poly)fluorinated arenes by taking advantage of the reactivity of C-H bonds ortho to C-F bonds are continuously being developed. This review summarizes the reasons for the enhanced reactivity and the consequent developments in the synthesis of valuable (poly)fluoroarene-containing organic compounds.
Collapse
Affiliation(s)
- Yudha P. Budiman
- Department
of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, 45363 Sumedang, Indonesia
| | - Robin N. Perutz
- Department
of Chemistry, University of York, York, YO10 5DD, U.K.
| | - Patrick G. Steel
- Department
of Chemistry, University of Durham, Science
Laboratories, South Road, Durham, DH1 3LE, U.K.
| | - Udo Radius
- Institute
for Inorganic Chemistry, Julius-Maximilians-Universität
Würzburg, Am Hubland, 97074 Würzburg Germany
| | - Todd B. Marder
- Institute
for Inorganic Chemistry, Julius-Maximilians-Universität
Würzburg, Am Hubland, 97074 Würzburg Germany
- Institute
for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg Germany
| |
Collapse
|
4
|
Wu X, Li Y, Hu H. The Enediolate Chemistry of Free Carboxylic Acids. Chem Asian J 2023; 18:e202201113. [PMID: 36583337 DOI: 10.1002/asia.202201113] [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: 11/02/2022] [Revised: 12/25/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022]
Abstract
The synthetic methodologies for the α-functionalization of free carboxylic acids through the enediolate intermediates are summarized in this review. In general, the enediolates could be generated in situ or transiently from free carboxylic acids with a stoichiometric or catalytic amount of protection reagents, including metal, boron, and silicon reagents. The in situ or transient generated enediolates were subsequently subjected to racemic or asymmetric reactions with various electrophiles, producing the α-functionalized free carboxylic acids in a single step. In addition, the enediolate could undergo an α-oxidation reaction with TEMPO through the radical process.
Collapse
Affiliation(s)
- Xin Wu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Yang Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Haipeng Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China.,College of Science Sichuan, Agricultural University, Ya'an, Sichuan, 625014, P.R. China
| |
Collapse
|
5
|
Suzuki H, Kondo S, Yamada K, Matsuda T. Diastereo- and Enantioselective Reductive Mannich-type Reaction of α,β-Unsaturated Carboxylic Acids to Ketimines: A Direct Entry to Unprotected β 2,3,3 -Amino Acids. Chemistry 2023; 29:e202202575. [PMID: 36341524 PMCID: PMC10107894 DOI: 10.1002/chem.202202575] [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: 08/18/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022]
Abstract
Stereoselective construction of unprotected β-amino acids is a significant challenge owing to the lack of methods for the catalytic generation of highly enantioenriched carboxylic acid enolates. In this study, a novel copper-catalyzed diastereo- and enantioselective reductive Mannich-type reaction of α,β-unsaturated carboxylic acids was developed, which provides a direct and scalable synthetic method for enantioenriched β2,3,3 -amino acids with vicinal stereogenic centers. The protocol features in situ generation of transiently protected carboxylic acids by a hydrosilane and their diastereo- and enantioselective reductive coupling with ketimines. The synthetic utility of this process was demonstrated by a gram-scale reaction and the transformation of β-amino acids.
Collapse
Affiliation(s)
- Hirotsugu Suzuki
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Sora Kondo
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Koichiro Yamada
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Takanori Matsuda
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| |
Collapse
|
6
|
Kremsmair A, Sunagatullina AS, Bole LJ, Mastropierro P, Graßl S, Wilke HR, Godineau E, Hevia E, Knochel P. Exploiting Coordination Effects for the Regioselective Zincation of Diazines Using TMPZnX⋅LiX (X=Cl, Br). Angew Chem Int Ed Engl 2022; 61:e202210491. [PMID: 35943036 PMCID: PMC9826189 DOI: 10.1002/anie.202210491] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Indexed: 01/11/2023]
Abstract
A new method for regioselective zincations of challenging N-heterocyclic substrates such as pyrimidines and pyridazine was reported using bimetallic bases TMPZnX⋅LiX (TMP=2,2,6,6-tetramethylpiperidyl; X=Cl, Br). Reactions occurred under mild conditions (25-70 °C, using 1.75 equivalents of base without additives), furnishing 2-zincated pyrimidines and 3-zincated pyridazine, which were then trapped with a variety of electrophiles. Contrasting with other s-block metalating systems, which lack selectivity in their reactions even when operating at low temperatures, these mixed Li/Zn bases enabled unprecedented regioselectivities that cannot be replicated by either LiTMP nor Zn(TMP)2 on their own. Spectroscopic and structural interrogations of organometallic intermediates involved in these reactions have shed light on the complex constitution of reaction mixtures and the origins of their special reactivities.
Collapse
Affiliation(s)
- Alexander Kremsmair
- Department Chemie & BiochemieLudwig Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
| | - Alisa S. Sunagatullina
- Department Chemie & BiochemieLudwig Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
| | - Leonie J. Bole
- Department für Chemie und BiochemieUniversität BernFreiestrasse 33012BernSwitzerland
| | - Pasquale Mastropierro
- Department für Chemie und BiochemieUniversität BernFreiestrasse 33012BernSwitzerland
| | - Simon Graßl
- Department Chemie & BiochemieLudwig Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
| | - Henrik R. Wilke
- Department Chemie & BiochemieLudwig Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
| | - Edouard Godineau
- Forschung & Entwicklung SteinSyngenta Crop Protection AGSchaffhauserstrasse 1014332SteinSwitzerland
| | - Eva Hevia
- Department für Chemie und BiochemieUniversität BernFreiestrasse 33012BernSwitzerland
| | - Paul Knochel
- Department Chemie & BiochemieLudwig Maximilians-Universität MünchenButenandtstrasse 5–13, Haus F81377MünchenGermany
| |
Collapse
|
7
|
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.
Collapse
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
| |
Collapse
|
8
|
Kremsmair A, Sunagatullina AS, Bole LJ, Mastropierro P, Graßl S, Wilke HR, Godineau E, Hevia E, Knochel P. Exploiting Coordination Effects for the Regioselective Zincation of Diazines Using TMPZnX·LiX (X = Cl, Br). Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | | | - Leonie J. Bole
- Universität Bern: Universitat Bern Department für Chemie und Biochemie SWITZERLAND
| | | | - Simon Graßl
- Ludwig-Maximilians-Universitat Munchen Department of Chemistry GERMANY
| | - Henrik R. Wilke
- Ludwig-Maximilians-Universitat Munchen Department of Chemistry GERMANY
| | - Edouard Godineau
- Syngenta Crop Protection AG Forschung & Entwicklung Stein SWITZERLAND
| | - Eva Hevia
- Universität Bern: Universitat Bern Chemie und Biochemie SWITZERLAND
| | - Paul Knochel
- Ludwig-Maximilians-Universitat Munchen Department of Chemistry Butenandtstr. 5-13 81377 München GERMANY
| |
Collapse
|
9
|
García‐Vázquez V, Carretero Cerdán A, Sanz‐Marco A, Gómez‐Bengoa E, Martín‐Matute B. An Expedient Method for the Umpolung Coupling of Enols with Heteronucleophiles**. Chemistry 2022; 28:e202201000. [PMID: 35638139 PMCID: PMC9400875 DOI: 10.1002/chem.202201000] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Indexed: 11/08/2022]
Abstract
In this paper, we present an unprecedented and general umpolung protocol that allows the functionalization of silyl enol ethers and of 1,3‐dicarbonyl compounds with a large range of heteroatom nucleophiles, including carboxylic acids, alcohols, primary and secondary amines, azide, thiols, and also anionic carbamates derived from CO2. The scope of the reaction also extends to carbon‐based nucleophiles. The reaction relies on the use of 1‐bromo‐3,3‐dimethyl‐1,3‐dihydro‐1λ3[d][1,2]iodaoxole, which provides a key α‐brominated carbonyl intermediate. The reaction mechanism has been studied experimentally and by DFT, and we propose formation of an unusual enolonium intermediate with a halogen‐bonded bromide.
Collapse
Affiliation(s)
| | - Alba Carretero Cerdán
- Department of Organic Chemistry Stockholm University Stockholm 10691 Sweden
- Departamento de Química Orgánica I Universidad Pais Vasco, UPV/EHU 20080 Donostia-San Sebastián Spain
| | - Amparo Sanz‐Marco
- Department of Organic Chemistry Stockholm University Stockholm 10691 Sweden
| | - Enrique Gómez‐Bengoa
- Departamento de Química Orgánica I Universidad Pais Vasco, UPV/EHU 20080 Donostia-San Sebastián Spain
| | | |
Collapse
|
10
|
Li S, Davies PW, Shu W. Modular synthesis of α-arylated carboxylic acids, esters and amides via photocatalyzed triple C-F bond cleavage of methyltrifluorides. Chem Sci 2022; 13:6636-6641. [PMID: 35756515 PMCID: PMC9172449 DOI: 10.1039/d2sc01905a] [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] [Received: 04/02/2022] [Accepted: 05/12/2022] [Indexed: 11/30/2022] Open
Abstract
α-Arylated carboxylic acids, esters and amides are widespread motifs in bioactive molecules and important building blocks in chemical synthesis. Thus, straightforward and rapid access to such structures is highly desirable. Here we report an organophotocatalytic multicomponent synthesis of α-arylated carboxylic acids, esters and amides from exhaustive defluorination of α-trifluoromethyl alkenes in the presence of alkyltrifluoroborates, water and nitrogen/oxygen nucleophiles. This operationally simple strategy features a unified access to functionally diverse α-arylated carboxylic acids, esters, and primary, secondary, and tertiary amides through backbone assembly from simple starting materials enabled by consecutive C–F bond functionalization at room temperature. Preliminary mechanistic investigations reveal that the reaction operates through a radical-triggered three-step cascade process, which involves distinct mechanisms for each defluorinative functionalization of the C–F bond. Here we report an organophotocatalytic synthesis of α-arylated carboxylic acids, esters and amides from exhaustive defluorination of α-trifluoromethyl alkenes in the presence of alkyltrifluoroborates, water and nitrogen/oxygen nucleophiles.![]()
Collapse
Affiliation(s)
- Sifan Li
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 Guangdong China .,School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Paul W Davies
- School of Chemistry, University of Birmingham Edgbaston Birmingham B15 2TT UK
| | - Wei Shu
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 Guangdong China
| |
Collapse
|
11
|
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.![]()
Collapse
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
| |
Collapse
|
12
|
Gabbey AL, Michel NWM, Hughes JME, Campeau LC, Rousseaux SAL. Synthesis of α-Aryl Secondary Amides via Nickel-Catalyzed Reductive Coupling of Redox-Active Esters. Org Lett 2022; 24:3173-3178. [PMID: 35471845 DOI: 10.1021/acs.orglett.2c00918] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The transition-metal-catalyzed α-arylation of secondary amides remains a synthetic challenge due to the presence of a free N-H bond. We report a strategy to synthesize secondary α-aryl amides via a Ni-catalyzed reductive arylation of redox-active N-hydroxyphthalimide (NHP) esters of malonic acid half amides. This transformation proceeds under mild conditions and displays excellent chemoselectivity for amide α-arylation in the presence of other enolizable carbonyls. The NHP ester substrates are readily prepared from Meldrum's acid.
Collapse
Affiliation(s)
- Alexis L Gabbey
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Nicholas W M Michel
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Jonathan M E Hughes
- Department of Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Louis-Charles Campeau
- Department of Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Sophie A L Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| |
Collapse
|
13
|
Luo F, Zhou H, Chen XB, Liu XJ, Chen XD, Qian PF, Wu XP, Wang W, Zhang SL. Synthesis of α-Aryl Primary Amides from α-Silyl Nitriles and Aryl Sulfoxides through [3,3]-Sigmatropic Rearrangement. Org Lett 2022; 24:1700-1705. [DOI: 10.1021/acs.orglett.2c00334] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Fan Luo
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Hui Zhou
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xiao-Bei Chen
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, and State Key Laboratory of Bioengineering Reactor, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xue-Jun Liu
- Shanghai Neutan Pharmaceutical Company, Ltd., Building 26, No. 555 Huanqiao Road, Pudong New Area, Shanghai 200131, P. R. China
| | - Xiao-Dong Chen
- Shanghai Neutan Pharmaceutical Company, Ltd., Building 26, No. 555 Huanqiao Road, Pudong New Area, Shanghai 200131, P. R. China
| | - Peng-Fei Qian
- School of Pharmacy, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Xin-Ping Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Centre for Computational Chemistry and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China
| | - Wei Wang
- Department of Pharmacology and Toxicology and BIO5 Institute, University of Arizona, 1703 East Mabel Street, P.O. Box 210207, Tucson, Arizona 85721-0207, United States
| | - Shi-Lei Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, 199 Ren’ai Road, Suzhou, Jiangsu 215123, P. R. China
| |
Collapse
|
14
|
Chen X, Lu S, Deng P, Chang X, Zhao Y, Ma Y, Zhang D, Xia F, Yang L, Wang J, Sun P. Lewis Acid Regulated Divergent Catalytic Reaction between Quinone Imine Ketals (QIKs) and 1,3‐Dicarbonyl Compounds: Switchable Access to Multiple Products Including 2‐Aryl‐1,3‐Dicarbonyl Compounds, Indoles, and Benzofurans. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100607] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xingyu Chen
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Sixian Lu
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Ping Deng
- School of Pharmacy Chongqing University Chongqing 400016 People's Republic of China
| | - Xiaoqiang Chang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Yifan Zhao
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Yue Ma
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Dong Zhang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Fei Xia
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Lan Yang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Jigang Wang
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| | - Peng Sun
- Institute of Chinese Materia Medica and Artemisinin Research Center Academy of Chinese Medical Sciences Beijing 100700 People's Republic of China
| |
Collapse
|
15
|
Hu H, wang C, Wu X, Liu Y, Yue G, su G, Feng J. Boron-Catalyzed alfa-C-H Fluorination of Aryl Acetic Acids. Org Chem Front 2022. [DOI: 10.1039/d1qo01814k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic alfa-C-H fluorination of aryl acetic acid was achieved with good functional tolerance in the presence of a boron catalyst. A series of alfa-fluoro aryl acetic acids was obtained...
Collapse
|
16
|
Suzuki H, Yoneoka K, Kondo S, Matsuda T. Copper-Catalyzed Enantioselective Reductive Aldol Reaction of α,β-Unsaturated Carboxylic Acids to Ketones: Silanes as Activator and Transient Protecting Group. Chemistry 2021; 28:e202104273. [PMID: 34967961 DOI: 10.1002/chem.202104273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Indexed: 11/09/2022]
Abstract
We have developed the first enantioselective reductive aldol reaction of unprotected α,β-unsaturated carboxylic acids by employing a copper/bisphosphine catalyst. The reaction features in situ protection and activation of an α,β-unsaturated carboxylic acid by a hydrosilane. The copper enolate formed in situ reacts with a ketone to afford the β-hydroxy carboxylic acid with excellent enantioselectivity (up to 99% ee). The corresponding gram-scale reaction with a low catalyst loading and the derivatization of the β-hydroxy carboxylic acids highlight the practicality of this transformation.
Collapse
Affiliation(s)
- Hirotsugu Suzuki
- Tokyo University of Science: Tokyo Rika Daigaku, Department of Applied Chemistry, 1-3 Kagurazaka, Shinjuku-ku, 162-8601, Tokyo, JAPAN
| | - Kenji Yoneoka
- Tokyo University of Science: Tokyo Rika Daigaku, Department of Applied Chemistry, 1-3 Kagurazaka, Shinjuku-ku, 162-8601, Tokyo, JAPAN
| | - Sora Kondo
- Tokyo University of Science: Tokyo Rika Daigaku, Department of Applied Chemistry, 1-3 Kagurazaka, Shinjuku-ku, 162-8601, Tokyo, JAPAN
| | - Takanori Matsuda
- Tokyo University of Science, Department of Applied Chemistry, 1-3 Kagurazaka, Shinjuku, 162-8601, Tokyo, JAPAN
| |
Collapse
|
17
|
Cheng F, Chen T, Huang YQ, Li JW, Zhou C, Xiao X, Chen FE. Copper-Catalyzed Ullmann-Type Coupling and Decarboxylation Cascade of Arylhalides with Malonates to Access α-Aryl Esters. Org Lett 2021; 24:115-120. [PMID: 34932360 DOI: 10.1021/acs.orglett.1c03688] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have developed a high-efficiency and practical Cu-catalyzed cross-coupling to directly construct versatile α-aryl-esters by utilizing readily available aryl bromides (or chlorides) and malonates. These gram-scale approaches occur with turnovers of up to 1560 and are smoothly conducted by the usage of a low catalyst loading, a new available ligand, and a green solvent. A variety of functional groups are tolerated, and the application occurs with α-aryl-esters to access nonsteroidal anti-inflammatory drugs (NSAIDs) on the gram scale.
Collapse
Affiliation(s)
- Fei Cheng
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Tao Chen
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Yin-Qiu Huang
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Jia-Wei Li
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Chen Zhou
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China
| | - Xiao Xiao
- Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China
| | - Fen-Er Chen
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, P. R. China.,Institute of Pharmaceutical Science and Technology, Zhejiang University of Technology, Hangzhou 310014, P. R. China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Fudan University, Shanghai 200433, P. R. China.,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai 200433, P. R. China
| |
Collapse
|
18
|
Abstract
A Negishi cross-coupling of α-hydroxy ester derivatives and arylzinc reagents has been developed. This reaction tolerates both primary and secondary C(sp3)-O alcohol precursors and achieves efficient cross-coupling under Ni catalysis without the need for added external metal reductant, photocatalyst, or additives. The arylation of readily accessible C(sp3)-O electrophiles in this operationally simple, rapid, and mild reaction provides a complementary way of accessing desirable α-aryl ester products.
Collapse
Affiliation(s)
- John J Monteith
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Sophie A L Rousseaux
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| |
Collapse
|
19
|
Ha MW, Paek SM. Recent Advances in the Synthesis of Ibuprofen and Naproxen. Molecules 2021; 26:4792. [PMID: 34443379 PMCID: PMC8399189 DOI: 10.3390/molecules26164792] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 11/16/2022] Open
Abstract
Herein, we review the recent progress in the synthesis of representative nonsteroidal anti-inflammatory drugs (NSAIDs), ibuprofen and naproxen. Although these drugs were discovered over 50 years ago, novel practical and asymmetric approaches are still being developed for their synthesis. In addition, this endeavor has enabled access to more potent and selective derivatives from the key frameworks of ibuprofen and naproxen. The development of a synthetic route to ibuprofen and naproxen over the last 10 years is summarized, including developing methodologies, finding novel synthetic routes, and applying continuous-flow chemistry.
Collapse
Affiliation(s)
- Min-Woo Ha
- Jeju Research Institute of Pharmaceutical Sciences, College of Pharmacy, Jeju National University, 102 Jejudaehak-ro, Jeju 63243, Jeju-do, Korea;
- Interdisciplinary Graduate Program in Advanced Convergence Technology & Science, Jeju National University, 102 Jejudaehak-ro, Jeju 63243, Jeju-do, Korea
| | - Seung-Mann Paek
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Gyeongnam-do, Korea
| |
Collapse
|
20
|
Hao HY, Lou SJ, Wang S, Zhou K, Wu QZ, Mao YJ, Xu ZY, Xu DQ. Pd-catalysed β-selective C(sp 3)-H arylation of simple amides. Chem Commun (Camb) 2021; 57:8055-8058. [PMID: 34291778 DOI: 10.1039/d1cc02261j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
An efficient Pd-catalysed β-C(sp3)-H arylation of diverse native amides with aryl iodides was developed. This protocol overcomes the necessity of the Thorpe-Ingold effect and features broad substrate scope and good functional group tolerance. The potential application of this protocol is collectively demonstrated by gram-scale synthesis and the synthesis of several bioactive molecules.
Collapse
Affiliation(s)
- Hong-Yan Hao
- Catalytic Hydrogenation Research Center, State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, Key Laboratory of Green Pesticides and Cleaner Production Technology of Zhejiang Province, Zhejiang University of Technology, Hangzhou 310014, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
21
|
Chen Y, Xu L, Jiang Y, Ma D. Assembly of α-(Hetero)aryl Nitriles via Copper-Catalyzed Coupling Reactions with (Hetero)aryl Chlorides and Bromides. Angew Chem Int Ed Engl 2021; 60:7082-7086. [PMID: 33372348 DOI: 10.1002/anie.202014638] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Indexed: 11/05/2022]
Abstract
α-(Hetero)aryl nitriles are important structural motifs for pharmaceutical design. The known methods for direct synthesis of these compounds via coupling with (hetero)aryl halides suffer from narrow reaction scope. Herein, we report that the combination of copper salts and oxalic diamides enables the coupling of a variety of (hetero)aryl halides (Cl, Br) and ethyl cyanoacetate under mild conditions, affording α-(hetero)arylacetonitriles via one-pot decarboxylation. Additionally, the CuBr/oxalic diamide catalyzed coupling of (hetero)aryl bromides with α-alkyl-substituted ethyl cyanoacetates proceeds smoothly at 60 °C, leading to the formation of α-alkyl (hetero)arylacetonitriles after decarboxylation. The method features a general substrate scope and is compatible with various functionalities and heteroaryls.
Collapse
Affiliation(s)
- Ying Chen
- School of Physical Science and Technology, ShanghaiTech University, 393 Middle Huaxia Road, Shanghai, 201210, China
| | - Lanting Xu
- State Key Laboratory of Bioorganic & Natural Products 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
| | - Yongwen Jiang
- State Key Laboratory of Bioorganic & Natural Products 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
| | - Dawei Ma
- State Key Laboratory of Bioorganic & Natural Products 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
| |
Collapse
|
22
|
Hu Z, Wei XJ, Handelmann J, Seitz AK, Rodstein I, Gessner VH, Gooßen LJ. Coupling of Reformatsky Reagents with Aryl Chlorides Enabled by Ylide-Functionalized Phosphine Ligands. Angew Chem Int Ed Engl 2021; 60:6778-6783. [PMID: 33427381 PMCID: PMC7986804 DOI: 10.1002/anie.202016048] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Indexed: 12/13/2022]
Abstract
The coupling of aryl chlorides with Reformatsky reagents is a desirable strategy for the construction of α‐aryl esters but has so far been substantially limited in the substrate scope due to many challenges posed by various possible side reactions. This limitation has now been overcome by the tailoring of ylide‐functionalized phosphines to fit the requirements of Negishi couplings. Record‐setting activities were achieved in palladium‐catalyzed arylations of organozinc reagents with aryl electrophiles using a cyclohexyl‐YPhos ligand bearing an ortho‐tolyl‐substituent in the backbone. This highly electron‐rich, bulky ligand enables the use of aryl chlorides in room temperature couplings of Reformatsky reagents. The reaction scope covers diversely functionalized arylacetic and arylpropionic acid derivatives. Aryl bromides and chlorides can be converted selectively over triflate electrophiles, which permits consecutive coupling strategies.
Collapse
Affiliation(s)
- Zhiyong Hu
- Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Xiao-Jing Wei
- Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Jens Handelmann
- Chair of Inorganic Chemistry II, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Ann-Katrin Seitz
- Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Ilja Rodstein
- Chair of Inorganic Chemistry II, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Viktoria H Gessner
- Chair of Inorganic Chemistry II, Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| | - Lukas J Gooßen
- Evonik Chair of Organic Chemistry, Ruhr-Universität Bochum, Universitätsstrasse 150, 44801, Bochum, Germany
| |
Collapse
|
23
|
Chen Y, Xu L, Jiang Y, Ma D. Assembly of α‐(Hetero)aryl Nitriles via Copper‐Catalyzed Coupling Reactions with (Hetero)aryl Chlorides and Bromides. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014638] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ying Chen
- School of Physical Science and Technology ShanghaiTech University 393 Middle Huaxia Road Shanghai 201210 China
| | - Lanting Xu
- State Key Laboratory of Bioorganic & Natural Products 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
| | - Yongwen Jiang
- State Key Laboratory of Bioorganic & Natural Products 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
| | - Dawei Ma
- State Key Laboratory of Bioorganic & Natural Products 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
| |
Collapse
|
24
|
Hu Z, Wei X, Handelmann J, Seitz A, Rodstein I, Gessner VH, Gooßen LJ. Kupplung von Reformatsky‐Reagenzien und Arylchloriden ermöglicht durch Ylid‐funktionalisierte Phosphanliganden. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016048] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhiyong Hu
- Evonik Lehrstuhl für Organische Chemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Xiao‐Jing Wei
- Evonik Lehrstuhl für Organische Chemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Jens Handelmann
- Lehrstuhl für Anorganische Chemie II Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstaße 150 44801 Bochum Deutschland
| | - Ann‐Katrin Seitz
- Evonik Lehrstuhl für Organische Chemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Ilja Rodstein
- Lehrstuhl für Anorganische Chemie II Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstaße 150 44801 Bochum Deutschland
| | - Viktoria H. Gessner
- Lehrstuhl für Anorganische Chemie II Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstaße 150 44801 Bochum Deutschland
| | - Lukas J. Gooßen
- Evonik Lehrstuhl für Organische Chemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| |
Collapse
|
25
|
Xie W, Kim D, Chang S. Copper-Catalyzed Formal Dehydrogenative Coupling of Carbonyls with Polyfluoroarenes Leading to β-C-H Arylation. J Am Chem Soc 2020; 142:20588-20593. [PMID: 33237759 DOI: 10.1021/jacs.0c10904] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We herein communicate a formal dehydrogenative coupling of carbonyls with polyfluoroarenes enabled by Cu catalysis. Silyl enol ethers initially prepared from carbonyls are postulated to undergo the copper-mediated oxidative dehydrogenative coupling with polyfluoroarenes via a radical pathway. Including cyclic and linear ketones, aldehydes, and esters, a broad range of β-aryl carbonyl products were efficiently obtained in high regio- and stereoselectivity with excellent functional group tolerance.
Collapse
Affiliation(s)
- Weilong Xie
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, Republic of Korea.,Department of Chemistry, Korea Advanced Institute of Science & Technology, Daejeon 34141, Republic of Korea
| | - Dongwook Kim
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, Republic of Korea.,Department of Chemistry, Korea Advanced Institute of Science & Technology, Daejeon 34141, Republic of Korea
| | - Sukbok Chang
- Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science, Daejeon 34141, Republic of Korea.,Department of Chemistry, Korea Advanced Institute of Science & Technology, Daejeon 34141, Republic of Korea
| |
Collapse
|
26
|
Rani G, Luxami V, Paul K. Traceless directing groups: a novel strategy in regiodivergent C-H functionalization. Chem Commun (Camb) 2020; 56:12479-12521. [PMID: 32985634 DOI: 10.1039/d0cc04863a] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The use of functional groups as internal ligands for assisting C-H functionalization, termed the chelation assisted strategy, is emerging as one of the most powerful tools for construction of C-C and C-X bonds from inert C-H bonds. However, there are various directing groups which cannot be either removed after functionalization or require some additional steps or reagents for their removal, thereby limiting the scope of structural diversity of the products, and the step and atom economy of the system. These limitations are overcome by the use of the traceless directing group (TDG) strategy wherein functionalization of the substrate and removal of the directing group can be carried out in a one pot fashion. Traceless directing groups serve as the most ideal chelation assisted strategy with a high degree of reactivity and selectivity without any requirement for additional steps for their removal. The present review overviews the use of various functional groups such as carboxylic acids, aldehydes, N-oxides, nitrones, N-nitroso amines, amides, sulfoxonium ylides and silicon tethered directing groups for assisting transition metal catalyzed C-H functionalization reactions in the last decade.
Collapse
Affiliation(s)
- Geetika Rani
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala-147001, India.
| | | | | |
Collapse
|
27
|
Orlandi M, Licini G. Computational Analysis of Enantioselective Pd-Catalyzed α-Arylation of Ketones. J Org Chem 2020; 85:11511-11518. [PMID: 32786644 PMCID: PMC8009508 DOI: 10.1021/acs.joc.0c01768] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The direct α-arylation of carbonyl compounds emerged over the last two decades as a straightforward method for the formation of C(sp3)-C(sp2) bonds. Mechanistic studies suggested a classical cross-coupling catalytic cycle. This consists of oxidative addition of the aryl halide (ArX) to the Pd(0)-catalyst, transmetallation of the Na- or K-enolate generated in situ, and subsequent reductive elimination. Even though the general reaction mechanism was thoroughly investigated, studies focusing on enantioselective variants of this transformation are rare. Here, the computational study of the [Pd(BINAP)]-catalyzed α-arylation of 2-methyltetralone with bromobenzene is reported. The whole reaction energy profile was computed and several mechanistic scenarios were investigated for the key steps of the reaction, which are the enolate transmetallation and the C-C bond-forming reductive elimination. Among the computed mechanisms, the reductive elimination from the C-bound enolate Pd complex was found to be the most favorable one, providing a good match with the stereoselectivity observed experimentally with different ligands and substrates. Detailed analysis of the stereodetermining transition structures allowed us to establish the origin of the reaction enantioselectivity.
Collapse
Affiliation(s)
- Manuel Orlandi
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy
| | - Giulia Licini
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131 Padova, Italy.,CIRCC-Consorzio Interuniversitario per le Reattività Chimiche e la Catalisi, Padova Unit., via Marzolo 1, 35131 Padova, Italy
| |
Collapse
|
28
|
Das J, Dolui P, Ali W, Biswas JP, Chandrashekar HB, Prakash G, Maiti D. A direct route to six and seven membered lactones via γ-C(sp 3)-H activation: a simple protocol to build molecular complexity. Chem Sci 2020; 11:9697-9702. [PMID: 34094235 PMCID: PMC8162128 DOI: 10.1039/d0sc03144e] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Lactones comprise a class of valuable compounds having biological as well as industrial importance. Development of a methodology to synthesize such molecules directly from readily available materials such as aliphatic carboxylic acid is highly desirable. Herein, we have reported synthesis of δ-lactones and ε-lactones via selective γ-C(sp3)–H activation. The γ-C–H bond containing aliphatic carboxylic acids provide six or seven membered lactones depending on the olefin partner in the presence of a palladium catalyst. A mechanistic investigation suggests that C–H activation is the rate-determining step. Further transformations of the lactones have been carried out to showcase the applicability of the present strategy. Six and seven membered lactones have been synthesized directly from readily available aliphatic acids.![]()
Collapse
Affiliation(s)
- Jayabrata Das
- Department of Chemistry, IIT Bombay Powai Mumbai 400076 India
| | - Pravas Dolui
- Department of Chemistry, IIT Bombay Powai Mumbai 400076 India
| | - Wajid Ali
- Department of Chemistry, IIT Bombay Powai Mumbai 400076 India
| | | | | | - Gaurav Prakash
- Department of Chemistry, IIT Bombay Powai Mumbai 400076 India
| | - Debabrata Maiti
- Department of Chemistry, IIT Bombay Powai Mumbai 400076 India .,Tokyo Tech World Research Hub Initiative(WRHI), Laboratory for Chemistry and Life Science, Tokyo Institute of Technology Tokyo 152-8550 Japan
| |
Collapse
|
29
|
Jin S, Dang HT, Haug GC, Nguyen VD, Arman HD, Larionov OV. Deoxygenative α-alkylation and α-arylation of 1,2-dicarbonyls. Chem Sci 2020; 11:9101-9108. [PMID: 34094191 PMCID: PMC8161533 DOI: 10.1039/d0sc03118f] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 06/30/2020] [Indexed: 01/26/2023] Open
Abstract
Construction of C-C bonds at the α-carbon is a challenging but synthetically indispensable approach to α-branched carbonyl motifs that are widely represented among drugs, natural products, and synthetic intermediates. Here, we describe a simple approach to generation of boron enolates in the absence of strong bases that allows for introduction of both α-alkyl and α-aryl groups in a reaction of readily accessible 1,2-dicarbonyls and organoboranes. Obviation of unselective, strongly basic and nucleophilic reagents permits carrying out the reaction in the presence of electrophiles that intercept the intermediate boron enolates, resulting in two new α-C-C bonds in a tricomponent process.
Collapse
Affiliation(s)
- Shengfei Jin
- Department of Chemistry, The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Hang T Dang
- Department of Chemistry, The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Graham C Haug
- Department of Chemistry, The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Viet D Nguyen
- Department of Chemistry, The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Hadi D Arman
- Department of Chemistry, The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| | - Oleg V Larionov
- Department of Chemistry, The University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 USA
| |
Collapse
|
30
|
Mondal B, Das D, Saha J. Multicomponent, Tandem 1,3- and 1,4-Bisarylation of Donor-Acceptor Cyclopropanes and Cyclobutanes with Electron-Rich Arenes and Hypervalent Arylbismuth Reagents. Org Lett 2020; 22:5115-5120. [PMID: 32525685 DOI: 10.1021/acs.orglett.0c01702] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A tandem catalytic process for 1,3- and 1,4-bisarylation of donor-acceptor (D-A) cyclopropanes and cyclobutanes is disclosed. This strategy capitalizes on the use of two distinct sources of nucleophilic and electrophilic arylating agents, affording the formation of two new C-C bonds in an orchestrated multicomponent fashion with the aid of a catalytic Lewis acid. Mechanistic investigations have revealed it to be a stereoselective process, and products could be easily elaborated into other useful compounds.
Collapse
Affiliation(s)
- Biplab Mondal
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research (CBMR), SGPGIMS Campus. Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| | - Dinabandhu Das
- School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India
| | - Jaideep Saha
- Division of Molecular Synthesis & Drug Discovery, Centre of Biomedical Research (CBMR), SGPGIMS Campus. Raebareli Road, Lucknow 226014, Uttar Pradesh, India
| |
Collapse
|
31
|
Wang Y, Huang W, Wang C, Qu J, Chen Y. Nickel-Catalyzed Formal Aminocarbonylation of Secondary Benzyl Chlorides with Isocyanides. Org Lett 2020; 22:4245-4249. [PMID: 32383891 DOI: 10.1021/acs.orglett.0c01284] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Phenylacetamides represent versatile feedstocks in synthetic chemistry, widely existing in drug molecules and natural products. Herein, we disclose a nickel-catalyzed formal aminocarbonylation of secondary benzyl chlorides with isocyanides yielding α-substituted phenylacetamide with steric hindrance, which is synthetically challenging via palladium-catalyzed aminocarbonylation. The reaction features wide functional group tolerance under mild conditions, highlighted by the tolerance of various aromatic halide (-Cl, -Br, -I) and heteroaromatic rings (pyridine and pyrazine).
Collapse
Affiliation(s)
- Yun Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology 130 Meilong Road, Shanghai 200237, China
| | - Wenyi Huang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology 130 Meilong Road, Shanghai 200237, China
| | - Chenglong Wang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology 130 Meilong Road, Shanghai 200237, China
| | - Jingping Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology 130 Meilong Road, Shanghai 200237, China
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science & Technology 130 Meilong Road, Shanghai 200237, China
| |
Collapse
|
32
|
Wakuluk-Machado AM, Dewez DF, Baguia H, Imbratta M, Echeverria PG, Evano G. Pd(OH) 2/C, a Practical and Efficient Catalyst for the Carboxylation of Benzylic Bromides with Carbon Monoxide. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.9b00402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anne-Marie Wakuluk-Machado
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles, Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Damien F. Dewez
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles, Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Hajar Baguia
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles, Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Miguel Imbratta
- Minakem Recherche, 145 Chemin des Lilas, 59310 Beuvry-la-Forêt, France
| | | | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles, Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| |
Collapse
|
33
|
Wan ZJ, Yuan XF, Luo J. Visible light induced 3-position-selective addition of arylpropiolic acids with ethers via C(sp 3)-H functionalization. Org Biomol Chem 2020; 18:3258-3262. [PMID: 32297885 DOI: 10.1039/d0ob00480d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Although the 2-position-selective decarboxylative coupling or addition of arylpropiolic acids with cyclic ethers has been intensively investigated, selective functionalization of arylpropiolic acids at the 3-position is still a big challenge. Herein, an intriguing and mild method for visible light induced regioselective addition of arylpropiolic acids by attacking exclusively at the 3-position with cyclic/acyclic ethers was developed. A variety of 3,3-bis-substituted acrylic acids were successfully obtained in moderate to excellent yields. A plausible reaction mechanism involving an energy transfer induced radical addition in the presence of visible light and photocatalyst was proposed.
Collapse
Affiliation(s)
- Zi-Juan Wan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Xiao-Feng Yuan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Jun Luo
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| |
Collapse
|
34
|
Shaughnessy KH. Monodentate Trialkylphosphines: Privileged Ligands in Metal-catalyzed Crosscoupling Reactions. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200211114540] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Phosphines are widely used ligands in transition metal-catalyzed reactions.
Arylphosphines, such as triphenylphosphine, were among the first phosphines to show
broad utility in catalysis. Beginning in the late 1990s, sterically demanding and electronrich
trialkylphosphines began to receive attention as supporting ligands. These ligands
were found to be particularly effective at promoting oxidative addition in cross-coupling
of aryl halides. With electron-rich, sterically demanding ligands, such as tri-tertbutylphosphine,
coupling of aryl bromides could be achieved at room temperature. More
importantly, the less reactive, but more broadly available, aryl chlorides became accessible
substrates. Tri-tert-butylphosphine has become a privileged ligand that has found application
in a wide range of late transition-metal catalyzed coupling reactions. This success
has led to the use of numerous monodentate trialkylphosphines in cross-coupling reactions. This review
will discuss the general properties and features of monodentate trialkylphosphines and their application in
cross-coupling reactions of C–X and C–H bonds.
Collapse
Affiliation(s)
- Kevin H. Shaughnessy
- Department of Chemistry & Biochemistry, The University of Alabama, Box 870336, Tuscaloosa, AL, 35487-0336, United States
| |
Collapse
|
35
|
Kou X, Kou KGM. α-Arylation of Silyl Enol Ethers via Rhodium(III)-Catalyzed C–H Functionalization. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05622] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Xuezhen Kou
- Department of Chemistry, University of California, Riverside, California 92507, United States
| | - Kevin G. M. Kou
- Department of Chemistry, University of California, Riverside, California 92507, United States
| |
Collapse
|