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Pipaón Fernández N, Cruise O, Easton SEF, Kaplan JM, Woodard JL, Hruszkewycz DP, Leitch DC. Direct Heterocycle C-H Alkenylation via Dual Catalysis Using a Palladacycle Precatalyst: Multifactor Optimization and Scope Exploration Enabled by High-Throughput Experimentation. J Org Chem 2024. [PMID: 38206166 DOI: 10.1021/acs.joc.3c02311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
One of the major challenges in developing catalytic methods for C-C bond formation is the identification of generally applicable reaction conditions, particularly if multiple substrate structural classes are involved. Pd-catalyzed direct arylation reactions are powerful transformations that enable direct functionalization of C-H bonds; however, the corresponding direct alkenylation reactions, using vinyl (pseudo) halide electrophiles, are less well developed. Inspired by process development efforts toward GSK3368715, an investigational active pharmaceutical ingredient, we report that a Pd(II) palladacycle derived from tri-tert-butylphosphine and Pd(OAc)2 is an effective single-component precatalyst for a variety of direct alkenylation reactions. High-throughput experimentation identified optimal solvent/base combinations for a variety of HetAr-H substrate classes undergoing C-H activation without the need for cocatalysts or stoichiometric silver bases (e.g., Ag2CO3). We propose this reaction proceeds via a dual cooperative catalytic mechanism, where in situ-generated Pd(0) supports a canonical Pd(0)/(II) cross-coupling cycle and the palladacycle effects C-H activation via CMD in a redox-neutral cycle. In all, 192 substrate combinations were tested with a hit rate of approximately 40% and 24 isolated examples. Importantly, this method was applied to prepare a key intermediate in the synthesis of GSK3368715 on multigram scale.
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Affiliation(s)
- Nahiane Pipaón Fernández
- Department of Chemistry, University of Victoria, 3800 Finnerty Road., Victoria, Briish Columbia V8P 5C2, Canada
| | - Odhran Cruise
- Department of Chemistry, University of Victoria, 3800 Finnerty Road., Victoria, Briish Columbia V8P 5C2, Canada
| | - Sarah E F Easton
- Department of Chemistry, University of Victoria, 3800 Finnerty Road., Victoria, Briish Columbia V8P 5C2, Canada
| | - Justin M Kaplan
- Chemical Development, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - John L Woodard
- Chemical Development, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - Damian P Hruszkewycz
- Chemical Development, GlaxoSmithKline, 1250 South Collegeville Road, Collegeville, Pennsylvania 19426, United States
| | - David C Leitch
- Department of Chemistry, University of Victoria, 3800 Finnerty Road., Victoria, Briish Columbia V8P 5C2, Canada
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2
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Duan YR, Wu HL, Gan HF. Synthesis of 2-Arylmethylbenzoxazoles by S8-Mediated Cyclization of 2-Aminophenols with Styrenes. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s1070428022100177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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Rossi R, Ciofalo M. Palladium-Catalysed Intermolecular Direct C–H Bond Arylation of Heteroarenes with Reagents Alternative to Aryl Halides: Current State of the Art. CURR ORG CHEM 2022. [DOI: 10.2174/1385272826666220201124008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
Abstract: This unprecedented review with 322 references provides a critical up-to-date picture of the Pd-catalysed intermolecular direct C–H bond arylation of heteroarenes with arylating reagents alternative to aryl halides that include aryl sulfonates (aryl triflates, tosylates, mesylates, and imidazole-1-sulfonates), diaryliodonium salts, [(diacetoxy)iodo]arenes, arenediazonium salts, 1-aryltriazenes, arylhydrazines and N’-arylhydrazides, arenesulfonyl chlorides, sodium arenesulfinates, arenesulfinic acids, and arenesulfonohydrazides. Particular attention has been paid to summarise the preparation of the various arylating reagents and to highlight the practicality, versatility, and limitations of the various developed arylation protocols, also comparing their results with those achieved in analogous Pd-catalysed arylation reactions involving the use of aryl halides as electrophiles. Mechanistic proposals have also been briefly summarised and discussed. However, data concerning Pd-catalysed direct C–H bond arylations involving the C–H bonds of aryl substituents of the examined heteroarene derivatives have not been taken into account.
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Affiliation(s)
- Renzo Rossi
- Dipartimento di Chimica e Chimica Industriale, University of Pisa, Via G. Moruzzi 3, I-56124 Pisa, Italy
| | - Maurizio Ciofalo
- Dipartimento di Scienze Agrarie, Alimentari e Forestali, University of Palermo, Viale delle Scienze, Edificio 4, I-90128, Palermo, Italy
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5
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Basak S, Dutta S, Maiti D. Accessing C2-Functionalized 1,3-(Benz)azoles through Transition Metal-Catalyzed C-H Activation. Chemistry 2021; 27:10533-10557. [PMID: 33909304 DOI: 10.1002/chem.202100475] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Indexed: 12/22/2022]
Abstract
The skeletal presence of 1,3-azoles in a variety of bioactive natural products, pharmacophores, and organic materials demands the derivatization of such heteroarenes regioselectively. Plenty of cross-coupling as well as cyclocondensation reactions have been performed to build up these skeletons but remained commercially unrealizable. A couple of severe drawbacks are faced by these traditional protocols that require a more straightforward strategy to obviate them. Transition metal-catalyzed C-H functionalization has emerged as a superior alternative in that context. 1,3-Azoles and their benzo counterparts have been extensively functionalized exploiting both noble and earth-abundant transition metals. Lately, C-2 functionalization have gained much traction due to the ease of attaining high regioselectivity and installation of synthetically manipulative functionalities. This critical review presents a bird's eye view of all major C-2 functionalization of (benz)azoles catalyzed by a diverse set of metals performed over the past 15 years.
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Affiliation(s)
- Sumon Basak
- Department of Chemistry, Banaras Hindu University, Varanasi, UP, 221005, India
| | - Subhabrata Dutta
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, MH, 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, MH, 400076, India
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6
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Joshi A, De SR. Diaryliodonium Salts in Transition‐Metal‐Catalyzed Chelation‐Induced C(sp
2
/sp
3
)−H Arylations. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100066] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Asha Joshi
- Dept. of Chemistry National Institute of Technology, Uttarakhand Srinagar-Garhwal Uttarakhand 246174 India
| | - Saroj Ranjan De
- Dept. of Chemistry National Institute of Technology, Uttarakhand Srinagar-Garhwal Uttarakhand 246174 India
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7
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Bream RN, Clark H, Edney D, Harsanyi A, Hayler J, Ironmonger A, Mc Cleary N, Phillips N, Priestley C, Roberts A, Rushworth P, Szeto P, Webb MR, Wheelhouse K. Application of C–H Functionalization in the Development of a Concise and Convergent Route to the Phosphatidylinositol-3-kinase Delta Inhibitor Nemiralisib. Org Process Res Dev 2021. [DOI: 10.1021/acs.oprd.0c00486] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Robert N. Bream
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Hugh Clark
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Dean Edney
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Antal Harsanyi
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - John Hayler
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Alan Ironmonger
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Nadine Mc Cleary
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Natalie Phillips
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Catherine Priestley
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Alastair Roberts
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Philip Rushworth
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Peter Szeto
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Michael R. Webb
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Katherine Wheelhouse
- Chemical Development, GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
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8
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Chen S, Ranjan P, Voskressensky LG, Van der Eycken EV, Sharma UK. Recent Developments in Transition-Metal Catalyzed Direct C-H Alkenylation, Alkylation, and Alkynylation of Azoles. Molecules 2020; 25:molecules25214970. [PMID: 33121108 PMCID: PMC7662665 DOI: 10.3390/molecules25214970] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 10/23/2020] [Accepted: 10/24/2020] [Indexed: 12/17/2022] Open
Abstract
The transition metal-catalyzed C–H bond functionalization of azoles has emerged as one of the most important strategies to decorate these biologically important scaffolds. Despite significant progress in the C–H functionalization of various heteroarenes, the regioselective alkylation and alkenylation of azoles are still arduous transformations in many cases. This review covers recent advances in the direct C–H alkenylation, alkylation and alkynylation of azoles utilizing transition metal-catalysis. Moreover, the limitations of different strategies, chemoselectivity and regioselectivity issues will be discussed in this review.
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Affiliation(s)
- Su Chen
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
| | - Prabhat Ranjan
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
| | - Leonid G. Voskressensky
- Organic Chemistry Department, Science Faculty, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya street 6, RU-117198 Moscow, Russia;
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
- Organic Chemistry Department, Science Faculty, Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya street 6, RU-117198 Moscow, Russia;
- Correspondence: (E.V.V.d.E.); (U.K.S.)
| | - Upendra K. Sharma
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, University of Leuven (KU Leuven), Celestijnenlaan 200F, B-3001 Leuven, Belgium; (S.C.); (P.R.)
- Correspondence: (E.V.V.d.E.); (U.K.S.)
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9
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Sutar SM, Savanur HM, Patil C, Prabhala P, Aridoss G, Kalkhambkar RG. Palladium Catalyzed Electrophilic C2‐Arylation of Azoles by Aryltriazenes in Ionic Liquid Promoted by Acidic Ionic Liquid. ChemistrySelect 2020. [DOI: 10.1002/slct.202002854] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Suraj M. Sutar
- Department of Chemistry Karnatak University's Karnatak Science College, Dharwad Karnatak 580001 India
| | - Hemantkumar M. Savanur
- P.G. Department of Studies and Research in Chemistry P. C. Jabin Science College, Hubli Karnatak 580021 India
| | - Chidanand Patil
- Department of Civil Engineering KLE DR MSSCET Belagavi Karnatak 590008 India
| | - Pavankumar Prabhala
- Department of Chemistry Karnatak University's Karnatak Science College, Dharwad Karnatak 580001 India
| | - Gopalakrishnan Aridoss
- Department for Management of Science and Technology Development Ton Duc Thang University Ho Chi Minh City Vietnam
- Faculty of Applied Sciences Ton Duc Thang University Ho Chi Minh City Vietnam
| | - Rajesh G. Kalkhambkar
- Department of Chemistry Karnatak University's Karnatak Science College, Dharwad Karnatak 580001 India
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10
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Zhou T, Szostak M. Palladium-Catalyzed Cross-Couplings by C-O Bond Activation. Catal Sci Technol 2020; 10:5702-5739. [PMID: 33796263 PMCID: PMC8009314 DOI: 10.1039/d0cy01159b] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Although palladium-catalyzed cross-coupling of aryl halides and reactive pseudohalides has revolutionized the way organic molecules are constructed today across various fields of chemistry, comparatively less progress has been made in the palladium-catalyzed cross-coupling of less reactive C-O electrophiles. This is despite the fact that the use of phenols and phenol derivatives as bench-stable cross-coupling partners has been well-recognized to bring about major advantages over aryl halides, such as (1) natural abundance of phenols, (2) avoidance of toxic halides, (3) orthogonal cross-coupling conditions, (4) prefunctionalization of phenolic substrates by electrophilic substitution or C-H functionalization, (5) ready availability of phenols from a different pool of precursors than aryl halides. In this review, we present an overview of recent advances made in the field of palladium-catalyzed cross-coupling of C-O electrophiles with a focus on (1) catalytic systems, (2) reaction type, and (3) class of C-O coupling partners. Although the field has been historically dominated by nickel catalysis, it is now evident that the use of more versatile, more functional group tolerant and highly active palladium catalysts supported by appropriately designed ancillary ligands enables the cross-coupling with improved substrate scope and generality, and likely represents a practical solution to the broadly applicable cross-coupling of various C-O bonds across diverse chemical disciplines. The review covers the period through June 2020.
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Affiliation(s)
- Tongliang Zhou
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, NJ 07102, United States
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11
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Čubiňák M, Tobrman T. Room-Temperature Negishi Reaction of Trisubstituted Vinyl Phosphates for the Synthesis of Tetrasubstituted Alkenes. J Org Chem 2020; 85:10728-10739. [PMID: 32674569 DOI: 10.1021/acs.joc.0c01254] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The present study investigated the ability of bromovinyl phosphates to react with organozinc reagents at room temperature during palladium-catalyzed reactions. It was determined that both the bromine atom and the phosphate group were successfully substituted by means of the reaction with the organozinc reagents, thereby allowing for the synthesis of cyclic and acyclic tetrasubstituted double bonds. The low stability of the organozinc compounds in an acidic environment was exploited to accomplish the synthesis of alkenes using a one-pot, two-step experimental setup.
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Affiliation(s)
- Marek Čubiňák
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
| | - Tomáš Tobrman
- Department of Organic Chemistry, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
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12
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Chen Z, So CM. Pd-Catalyzed Cross-Coupling of Highly Sterically Congested Enol Carbamates with Grignard Reagents via C-O Bond Activation. Org Lett 2020; 22:3879-3883. [PMID: 32352793 DOI: 10.1021/acs.orglett.0c01127] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The palladium-catalyzed cross-coupling reaction of enol carbamates to construct highly sterically congested alkenyl compounds is presented for the first time. This protocol demonstrates the potential of using thermally stable and highly atom-economic enol electrophiles as building blocks in bulky alkene synthesis. This reaction accommodates a broad substrate scope with excellent Z/E isomer ratios, which also provides a new synthetic pathway for accessing Tamoxifen.
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Affiliation(s)
- Zicong Chen
- State Key Laboratory of Chemical Biology and Drug Discovery and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
| | - Chau Ming So
- State Key Laboratory of Chemical Biology and Drug Discovery and 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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13
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Anitha T, Ashalu KC, Sandeep M, Mohd A, Wencel-Delord J, Colobert F, Reddy KR. LiI/TBHP Mediated Oxidative Cross-Coupling of P(O)-H Compounds with Phenols and Various Nucleophiles: Direct Access to the Synthesis of Organophosphates. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901362] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Thippani Anitha
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| | - Kashamalla Chinna Ashalu
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
| | - Mummadi Sandeep
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
| | - Aabid Mohd
- Laboratoired′InnovationMoléculaire et Applications (UMR CNRS7042); Université de Strasbourg/Université de haute Alsace, ECPM, 25 Rue Becquerel; 67087 Strasbourg France
| | - Joanna Wencel-Delord
- Laboratoired′InnovationMoléculaire et Applications (UMR CNRS7042); Université de Strasbourg/Université de haute Alsace, ECPM, 25 Rue Becquerel; 67087 Strasbourg France
| | - Francoise Colobert
- Laboratoired′InnovationMoléculaire et Applications (UMR CNRS7042); Université de Strasbourg/Université de haute Alsace, ECPM, 25 Rue Becquerel; 67087 Strasbourg France
| | - Kallu Rajender Reddy
- Catalysis and Fine Chemicals Division; CSIR- Indian Institute of Chemical Technology; 500007 Tarnaka Hyderabad India
- Academy of Scientific and Innovative Research (AcSIR); 110025 New Delhi India
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14
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Liu C, Wang Z, Wang L, Li P, Zhang Y. Palladium-catalyzed direct C2-arylation of azoles with aromatic triazenes. Org Biomol Chem 2019; 17:9209-9216. [PMID: 31595932 DOI: 10.1039/c9ob01883b] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A highly efficient palladium-catalyzed arylation of azoles at the C2-position using 1-aryltriazenes as aryl reagents was developed. Azoles including oxazoles, thiazoles, imidazoles, 1,3,4-oxadiazoles, and oxazolines could react with 1-aryltriazenes smoothly to generate the corresponding products in good to excellent yields, and various substitution patterns were tolerated toward the reaction.
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Affiliation(s)
- Can Liu
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China.
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15
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Larson H, Schultz D, Kalyani D. Ni-Catalyzed C–H Arylation of Oxazoles and Benzoxazoles Using Pharmaceutically Relevant Aryl Chlorides and Bromides. J Org Chem 2019; 84:13092-13103. [DOI: 10.1021/acs.joc.9b02094] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Helen Larson
- Department of Chemistry, St. Olaf College, 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
| | - Danielle Schultz
- Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Dipannita Kalyani
- Department of Chemistry, St. Olaf College, 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
- Discovery Chemistry, Merck & Co., Inc., Kenilworth, New Jersey 07033, United States
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16
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Decoration of 1,3-oxazole by alkyl substituents via CH activation (microreview). Chem Heterocycl Compd (N Y) 2019. [DOI: 10.1007/s10593-019-02442-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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17
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Oshimoto K, Tsuji H, Kawatsura M. Synthesis of benzoxazoles via the copper-catalyzed hydroamination of alkynones with 2-aminophenols. Org Biomol Chem 2019; 17:4225-4229. [DOI: 10.1039/c9ob00572b] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe herein the synthetic method to benzoxazole derivatives via the copper-catalyzed hydroamination of alkynones with 2-aminophenols.
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Affiliation(s)
- Kohei Oshimoto
- Department of Chemistry
- College of Humanities & Sciences
- Nihon University
- Tokyo 156-8550
- Japan
| | - Hiroaki Tsuji
- Department of Chemistry
- College of Humanities & Sciences
- Nihon University
- Tokyo 156-8550
- Japan
| | - Motoi Kawatsura
- Department of Chemistry
- College of Humanities & Sciences
- Nihon University
- Tokyo 156-8550
- Japan
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18
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Zheng J, Hosseini-Eshbala F, Dong YX, Breit B. Palladium-catalyzed trisallylation of benzoxazoles and 2-aryl-1,3,4-oxadiazoles with alkyne. Chem Commun (Camb) 2019; 55:624-627. [DOI: 10.1039/c8cc09165j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this report, a palladium catalyzed direct trisallylation of azoles with alkyne via a novel subsequent mono C(sp2)–H allylation/olefin isomerization/y-selective double C(sp3)–H allylation process was developed. A wide range of substituted trisallylated azoles bearing all quaternary carbon centers has been synthesized efficiently and with high atom economy.
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Affiliation(s)
- Jun Zheng
- Institut für Organische Chemie
- Freiburg Institute for Advanced Studies (FRIAS)
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburgim Breisgau
- Germany
| | - Fereshteh Hosseini-Eshbala
- Institut für Organische Chemie
- Freiburg Institute for Advanced Studies (FRIAS)
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburgim Breisgau
- Germany
| | - Ya-Xi Dong
- Institut für Organische Chemie
- Freiburg Institute for Advanced Studies (FRIAS)
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburgim Breisgau
- Germany
| | - Bernhard Breit
- Institut für Organische Chemie
- Freiburg Institute for Advanced Studies (FRIAS)
- Albert-Ludwigs-Universität Freiburg
- 79104 Freiburgim Breisgau
- Germany
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19
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Shome S, Singh SP. Reactions in Water - A Greener Approach Using Ruthenium Catalysts. CHEM REC 2018; 19:1935-1951. [PMID: 30537344 DOI: 10.1002/tcr.201800142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Indexed: 12/18/2022]
Abstract
Reactions using transition metals as catalysts have emerged as an efficient method in the recent times. However, the selection of solvent plays a crucial role in this regard. Several solvents used traditionally suffer majorly with problems of toxicity; high boiling point etc. leading to drastic reaction conditions. Water being a non-toxic, non-inflammable and environmentally benign can replace the hazardous organic solvents in laboratory as well as industry. Maintaining a minimum catalyst loading percentage we can advantageously avail high levels of selectivity. Water was found to be a good solvent medium for several metal catalysed reactions. An intramolecular deprotonation mechanism is followed by the ruthenium (II) catalysts in water; thereby, facilitating the catalytic action of the metal. These studies can help the industrial chemists to utilize water as a solvent for their reactions towards improvement of their waste management procedure. This review mainly focuses on the several recent developments in the above direction.
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Affiliation(s)
- Sanchari Shome
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500007
- Academy of Scientific and Innovative Research (AcSIR, New Delhi
| | - Surya Prakash Singh
- Polymers and Functional Materials Division, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad, 500007
- Academy of Scientific and Innovative Research (AcSIR, New Delhi
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20
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Sai M. An Efficient Ga(OTf)3/Isopropanol Catalytic System for Direct Reduction of Benzylic Alcohols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Masahiro Sai
- Research Foundation ITSUU Laboratory; C1232 Kanagawa Science Park R & D Building, 3-2-1 Sakado, Takatsu-ku, Kawasaki; Kanagawa 213-0012 Japan
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21
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Kaloğlu M, Kaloğlur N, Özdemir İ. Direct C-H Bond Activation of Benzoxazole and Benzothiazole with Aryl Bromides Catalyzed by Palladium(II)-N-
heterocyclic Carbene Complexes. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800166] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Murat Kaloğlu
- Department of Chemistry, Faculty of Science and Arts; İnönü University; 44280 Malatya Turkey
- Catalysis Research and Application Center; İnönü University; 44280 Malatya Turkey
| | - Nazan Kaloğlur
- Department of Chemistry, Faculty of Science and Arts; İnönü University; 44280 Malatya Turkey
- Catalysis Research and Application Center; İnönü University; 44280 Malatya Turkey
| | - İsmail Özdemir
- Department of Chemistry, Faculty of Science and Arts; İnönü University; 44280 Malatya Turkey
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22
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Pan WJ, Wang ZX. Palladium-Catalyzed C−H Benzylation of (Benzo)oxazoles with Benzylic Quaternary Ammonium Triflates. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800264] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wen-Jing Pan
- CAS Key Laboratory of Soft Matter Chemistry, and Department of Chemistry; University of Science and Technology of China; Hefei Anhui 230026 P.R. China
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry, and Department of Chemistry; University of Science and Technology of China; Hefei Anhui 230026 P.R. China
- Collaborative Innovation Center of Chemical Science, and Engineering (Tianjin); Tianjin 300072 P.R. China
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23
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Xu W, Yoshikai N. Cobalt-catalyzed directed C-H alkenylation of pivalophenone N-H imine with alkenyl phosphates. Beilstein J Org Chem 2018; 14:709-715. [PMID: 29719569 PMCID: PMC5905286 DOI: 10.3762/bjoc.14.60] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 03/14/2018] [Indexed: 11/24/2022] Open
Abstract
A cobalt–N-heterocyclic carbene (NHC) catalyst efficiently promotes an ortho C–H alkenylation reaction of pivalophenone N–H imine with an alkenyl phosphate. The reaction tolerates various substituted pivalophenone N–H imines as well as cyclic and acyclic alkenyl phosphates.
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Affiliation(s)
- Wengang Xu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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24
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Yin Y, Yue X, Zhong Q, Jiang H, Bai R, Lan Y, Zhang H. Ni-Catalyzed C−F Bond Functionalization of Unactivated Aryl Fluorides and Corresponding Coupling with Oxazoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701506] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Youzhi Yin
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 People's Republic of China
| | - Xiaoyu Yue
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 People's Republic of China
| | - Qi Zhong
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 People's Republic of China
| | - Hanmin Jiang
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 People's Republic of China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 People's Republic of China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 400030 People's Republic of China
| | - Hua Zhang
- College of Chemistry; Nanchang University; 999 Xuefu Avenue Nanchang 330031 People's Republic of China
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25
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Liu M, Zhang Z, Quan Z, Wang X. The palladium‐catalyzed C‐N cross‐coupling reaction of diheteroaryl disulfides with heterocyclic amines. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ming‐Xia Liu
- Key Laboratory of Eco‐Environment‐Related Polymer MaterialsMinistry of Education of China Gansu 730070 People's Republic of China
- Gansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East Road 967# Lanzhou Gansu 730070 People's Republic of China
| | - Zhang Zhang
- Key Laboratory of Eco‐Environment‐Related Polymer MaterialsMinistry of Education of China Gansu 730070 People's Republic of China
- Gansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East Road 967# Lanzhou Gansu 730070 People's Republic of China
| | - Zheng‐Jun Quan
- Key Laboratory of Eco‐Environment‐Related Polymer MaterialsMinistry of Education of China Gansu 730070 People's Republic of China
- Gansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East Road 967# Lanzhou Gansu 730070 People's Republic of China
| | - Xi‐Cun Wang
- Key Laboratory of Eco‐Environment‐Related Polymer MaterialsMinistry of Education of China Gansu 730070 People's Republic of China
- Gansu Key Laboratory of Polymer Materials, College of Chemistry and Chemical EngineeringNorthwest Normal University Anning East Road 967# Lanzhou Gansu 730070 People's Republic of China
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26
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Sun Z, Fridrich B, de Santi A, Elangovan S, Barta K. Bright Side of Lignin Depolymerization: Toward New Platform Chemicals. Chem Rev 2018; 118:614-678. [PMID: 29337543 PMCID: PMC5785760 DOI: 10.1021/acs.chemrev.7b00588] [Citation(s) in RCA: 750] [Impact Index Per Article: 125.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Indexed: 11/28/2022]
Abstract
Lignin, a major component of lignocellulose, is the largest source of aromatic building blocks on the planet and harbors great potential to serve as starting material for the production of biobased products. Despite the initial challenges associated with the robust and irregular structure of lignin, the valorization of this intriguing aromatic biopolymer has come a long way: recently, many creative strategies emerged that deliver defined products via catalytic or biocatalytic depolymerization in good yields. The purpose of this review is to provide insight into these novel approaches and the potential application of such emerging new structures for the synthesis of biobased polymers or pharmacologically active molecules. Existing strategies for functionalization or defunctionalization of lignin-based compounds are also summarized. Following the whole value chain from raw lignocellulose through depolymerization to application whenever possible, specific lignin-based compounds emerge that could be in the future considered as potential lignin-derived platform chemicals.
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Affiliation(s)
- Zhuohua Sun
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Bálint Fridrich
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Alessandra de Santi
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Saravanakumar Elangovan
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Katalin Barta
- Stratingh
Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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27
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Wu A, Chen Q, Liu W, You L, Fu Y, Zhang H. Transition-metal-free arylation of benzoxazoles with aryl nitriles. Org Chem Front 2018. [DOI: 10.1039/c8qo00227d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Transition-metal-free arylation of benzoxazoles with aryl nitriles has been developed to afford important 2-aryl benzoxazoles under simple reaction conditions.
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Affiliation(s)
- Aizhen Wu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Quan Chen
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Wei Liu
- College of Food Science and Technology
- Henan University of Technology
- Zhengzhou 450001
- P. R. China
| | - Lijun You
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Yifan Fu
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
| | - Hua Zhang
- College of Chemistry
- Nanchang University
- Nanchang 330031
- P. R. China
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28
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Zhou H, Liu Q, Hua M, Wang C, Chen D, Fu H. Silver-Mediated 2-Arylation/Alkylation/Acylation of Benzothiazoles with Aldehydes in Water. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13934] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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29
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Li H, Zhu Y, Lu D, Gong Y. Regioselective addition of phosphites to acyl cyclopropanes and following rearrangements: a facile access to enol phosphates. Org Biomol Chem 2018; 16:5907-5912. [DOI: 10.1039/c8ob01533c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This work describes a novel method of preparing functionalized enol phosphates with acyl cyclopropanes through a regioselective cascade reaction.
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Affiliation(s)
- Haotian Li
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Yuequan Zhu
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Dengfu Lu
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering
- Huazhong University of Science and Technology
- Wuhan
- China
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30
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Lee PS, Xu W, Yoshikai N. Directed C-H Alkenylation of Aryl Imines with Alkenyl Phosphates Promoted by a Cobalt-N-Heterocyclic Carbene Catalyst. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701105] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Pin-Sheng Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Wengang Xu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 637371 Singapore
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31
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Lee JH, Raja GC, Yu S, Lee J, Song KH, Lee S. Palladium-Catalyzed Decarboxylative Coupling of Alkynyl Carboxylic Acids with Aryl Tosylates. ACS OMEGA 2017; 2:6259-6269. [PMID: 31457871 PMCID: PMC6644868 DOI: 10.1021/acsomega.7b01165] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 09/18/2017] [Indexed: 06/10/2023]
Abstract
Decarboxylative coupling reactions of alkynyl carboxylic acids with aryl tosylates were developed in the presence of a palladium catalyst. Among the commercially available phosphine ligands, only 1-dicyclohexylphosphino-2-(di-tert-butylphosphino-ethyl)ferrocene (CyPF-tBu) showed good reactivity. The reaction took place smoothly and gave the decarboxylative coupled products in moderate to good yields. This demonstrates the excellent functional group tolerance toward alkyl, alkoxy, fluoro, thiophenyl, ester, and ketone groups. In addition, alkyl-substituted propiolic acids, such as octynoic and hexynoic acids, were coupled with phenyl tosylate to provide the desired products. We found that the electronic properties of the substituents on the phenyl ring in arylpropiolic acids are an important factor. The order of reactivity was found to be aryl iodide > aryl bromide > aryl tosylate > aryl chloride. However, aryl chloride-bearing electron-withdrawing groups showed higher reactivity than those bearing aryl tosylates.
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Affiliation(s)
- Ju-Hyeon Lee
- Department
of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | | | - Subeen Yu
- Department
of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Junseong Lee
- Department
of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Kwang Ho Song
- Department
of Chemical & Biological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Sunwoo Lee
- Department
of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
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32
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Shi WM, Li XH, Liang C, Mo DL. Base-Free Selective O
-Arylation and Sequential [3,3]-Rearrangement of Amidoximes with Diaryliodonium Salts: Synthesis of 2-Substituted Benzoxazoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700906] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Wei-Min Shi
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Xiao-Hua Li
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
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33
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Grosheva D, Cramer N. Ketene Aminal Phosphates: Competent Substrates for Enantioselective Pd(0)-Catalyzed C–H Functionalizations. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02783] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daria Grosheva
- Laboratory of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSA, BCH 4305, CH-1015 Lausanne, Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSA, BCH 4305, CH-1015 Lausanne, Switzerland
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34
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Yi Z, Aschenaki Y, Daley R, Davick S, Schnaith A, Wander R, Kalyani D. Palladium Catalyzed Arylation and Benzylation of Nitroarenes Using Aryl Sulfonates and Benzyl Acetates. J Org Chem 2017; 82:6946-6957. [PMID: 28617611 DOI: 10.1021/acs.joc.7b00550] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Pd-catalyzed arylation or benzylation of nitroazoles using aryl sulfonates or benzyl acetates is described. Electronically varied aryl tosylates and mesylates, as well as benzyl acetates, afford the arylated and benzylated products. Arylation of nitrobenzene is also reported. The relative rate for the arylation of halides is greater than that of tosylates using the reported reaction parameters. These studies enhance the scope of electrophiles for nitroarene arylations and benzylations, which was hitherto limited to the use of halide electrophiles.
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Affiliation(s)
- Zubaoyi Yi
- St. Olaf College , 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
| | - Yodit Aschenaki
- St. Olaf College , 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
| | - Ryan Daley
- St. Olaf College , 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
| | - Stephen Davick
- St. Olaf College , 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
| | - Abigail Schnaith
- St. Olaf College , 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
| | - Rylee Wander
- St. Olaf College , 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
| | - Dipannita Kalyani
- St. Olaf College , 1520 St. Olaf Avenue, Northfield, Minnesota 55057, United States
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35
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Steinberg DF, Turk MC, Kalyani D. Nickel-Catalyzed C-H Arylation of Benzoxazoles and Oxazoles: Benchmarking the Influence of Electronic, Steric and Leaving Group Variations in Phenolic Electrophiles. Tetrahedron 2017; 73:2196-2209. [PMID: 29051675 PMCID: PMC5642964 DOI: 10.1016/j.tet.2017.02.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Deborah F. Steinberg
- Department of Chemistry, St. Olaf College, 1520 St. Olaf Avenue, Northfield, Minnesota 55057, USA
| | - Morgan C. Turk
- Department of Chemistry, St. Olaf College, 1520 St. Olaf Avenue, Northfield, Minnesota 55057, USA
| | - Dipannita Kalyani
- Department of Chemistry, St. Olaf College, 1520 St. Olaf Avenue, Northfield, Minnesota 55057, USA
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36
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Srivastava A, Shukla G, Singh MS. p -Toluenesulfonic acid-catalyzed metal-free formal [4 + 1] heteroannulation via N H/O H/S H functionalization: One-pot access to 2-aryl/hetaryl/alkyl benzazole derivatives. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.12.073] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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37
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Chang W, Sun Y, Huang Y. One-pot green synthesis of benzoxazole derivatives through molecular sieve-catalyzed oxidative cyclization reaction. HETEROATOM CHEMISTRY 2017. [DOI: 10.1002/hc.21360] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Weichieh Chang
- Department of Applied Chemistry; National University of Kaohsiung; Kaohsiung Taiwan
| | - Yukai Sun
- Department of Chemistry; National Tsing Hua University; Hsinchu Taiwan
| | - Yungtzung Huang
- Department of Applied Chemistry; National University of Kaohsiung; Kaohsiung Taiwan
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38
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Dai WC, Wang ZX. Palladium-catalyzed coupling of azoles with 1-aryltriazenes via C–H/C–N cleavage. Org Chem Front 2017. [DOI: 10.1039/c7qo00174f] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Arylation of azoles was performed via C–H functionalization with 1-aryltriazenes in the presence of PdCl2, dppe, CuCl and ButOLi.
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Affiliation(s)
- Wei-Can Dai
- CAS Key Laboratory of Soft Matter Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei
- P. R. China
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry
- Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry
- University of Science and Technology of China
- Hefei
- P. R. China
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39
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Atom economic palladium catalyzed novel approach for arylation of benzothiazole and benzoxazole with triarylbismuth reagents via C H activation. CATAL COMMUN 2017. [DOI: 10.1016/j.catcom.2016.10.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
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40
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Li D, Wu XX, Gao T, Li B, Chen S. CuCl-Catalyzed direct C–H alkenylation of benzoxazoles with allyl halides. Org Biomol Chem 2017; 15:7282-7285. [DOI: 10.1039/c7ob01838j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and concise CuCl-catalyzed C2-alkenylation reaction of benzoxazoles with allyl halides has been established.
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Affiliation(s)
- Die Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- Department of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- People's Republic of China
| | - Xin-Xing Wu
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- Department of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- People's Republic of China
| | - Tingyu Gao
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- Department of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- People's Republic of China
| | - Baoguo Li
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- Department of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- People's Republic of China
| | - Shufeng Chen
- Inner Mongolia Key Laboratory of Fine Organic Synthesis
- Department of Chemistry and Chemical Engineering
- Inner Mongolia University
- Hohhot 010021
- People's Republic of China
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41
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Zhou Q, Zhang JF, Cao H, Zhong R, Hou XF. Synthesis of o-Alkenylated 2-Arylbenzoxazoles via Rh-Catalyzed Oxidative Olefination of 2-Arylbenzoxazoles: Scope Investigation, Structural Features, and Mechanism Studies. J Org Chem 2016; 81:12169-12180. [DOI: 10.1021/acs.joc.6b01836] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Quan Zhou
- Department of Chemistry, Fudan University, 220
Handan Road, Shanghai 200433, China
| | - Jing-Fan Zhang
- Department of Chemistry, Fudan University, 220
Handan Road, Shanghai 200433, China
| | - Hui Cao
- Department of Chemistry, Fudan University, 220
Handan Road, Shanghai 200433, China
| | - Rui Zhong
- Department of Chemistry, Fudan University, 220
Handan Road, Shanghai 200433, China
| | - Xiu-Feng Hou
- Department of Chemistry, Fudan University, 220
Handan Road, Shanghai 200433, China
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42
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Fu WC, Wu Y, So CM, Wong SM, Lei A, Kwong FY. Catalytic Direct C2-Alkenylation of Oxazoles at Parts per Million Levels of Palladium/PhMezole-Phos Complex. Org Lett 2016; 18:5300-5303. [DOI: 10.1021/acs.orglett.6b02619] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wai Chung Fu
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 852, Hong Kong
| | - Yong Wu
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, P.R. China
| | - Chau Ming So
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 852, Hong Kong
| | - Shun Man Wong
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 852, Hong Kong
| | - Aiwen Lei
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, P.R. China
| | - Fuk Yee Kwong
- State
Key Laboratory of Chirosciences and Department of Applied Biology
and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon 852, Hong Kong
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43
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Liu G, Bai X, Lv H. Green synthesis of supported palladium nanoparticles employing pine needles as reducing agent and carrier: New reusable heterogeneous catalyst in the Suzuki coupling reaction. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3587] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Guanghui Liu
- School of Chemistry and Material Sciences; Heilongjiang University; Harbin 150080 China
| | - Xuefeng Bai
- School of Chemistry and Material Sciences; Heilongjiang University; Harbin 150080 China
- Institute of Petrochemistry, Heilongjiang Academy of Sciences; Harbin 150040 China
| | - Hongfei Lv
- Institute of Petrochemistry, Heilongjiang Academy of Sciences; Harbin 150040 China
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44
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Dwivedi AD, Binnani C, Tyagi D, Rawat KS, Li PZ, Zhao Y, Mobin SM, Pathak B, Singh SK. Troponate/Aminotroponate Ruthenium–Arene Complexes: Synthesis, Structure, and Ligand-Tuned Mechanistic Pathway for Direct C–H Bond Arylation with Aryl Chlorides in Water. Inorg Chem 2016; 55:6739-49. [DOI: 10.1021/acs.inorgchem.6b01028] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
| | | | | | | | - Pei-Zhou Li
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
| | - Yanli Zhao
- Division
of Chemistry and Biological Chemistry, School of Physical and Mathematical
Sciences, Nanyang Technological University, 21 Nanyang Link 637371, Singapore
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45
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Lipp A, Lahm G, Opatz T. Light Induced C–C Coupling of 2-Chlorobenzazoles with Carbamates, Alcohols, and Ethers. J Org Chem 2016; 81:4890-7. [DOI: 10.1021/acs.joc.6b00715] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Alexander Lipp
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Günther Lahm
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Till Opatz
- Institute of Organic Chemistry, University of Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
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46
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Khake SM, Jagtap RA, Dangat YB, Gonnade RG, Vanka K, Punji B. Mechanistic Insights into Pincer-Ligated Palladium-Catalyzed Arylation of Azoles with Aryl Iodides: Evidence of a PdII–PdIV–PdII Pathway. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shrikant M. Khake
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Rahul A. Jagtap
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Yuvraj B. Dangat
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Rajesh G. Gonnade
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Kumar Vanka
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Group, Chemical
Engineering Division, ‡Physical and Materials Chemistry Division, and §Centre
for Material Characterization, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune 411 008, Maharashtra India
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47
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Hu F, Yang J, Xia Y, Ma C, Xia H, Zhang Y, Wang J. C–H Bond Functionalization of Benzoxazoles with Chromium(0) Fischer Carbene Complexes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fangdong Hu
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Jinghui Yang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Ying Xia
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Chen Ma
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Haiping Xia
- College
of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
| | - Yan Zhang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of Ministry of Education,
College of Chemistry, Peking University, Beijing 100871, China
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48
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Zhu F, Tao JL, Wang ZX. Palladium-Catalyzed C-H Arylation of (Benzo)oxazoles or (Benzo)thiazoles with Aryltrimethylammonium Triflates. Org Lett 2016; 17:4926-9. [PMID: 26398315 DOI: 10.1021/acs.orglett.5b02458] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The C-H arylation of (benzo)oxazoles or (benzo)thiazoles with aryltrimethylammonium triflates was carried out via Pd-catalyzed C-H/C-N cleavage. Oxazoles, thiazoles, benzoxazole, and benzothiazole were arylated using activated and deactivated aryltrimethylammonium triflates to give 2-aryl(benzo)oxazoles or 2-aryl(benzo)thiazoles in reasonable to excellent yields.
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Affiliation(s)
- Feng Zhu
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China
| | - Jian-Long Tao
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China
| | - Zhong-Xia Wang
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China , Hefei, Anhui 230026, P. R. China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072, P. R. China
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49
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Bheeter CB, Chen L, Soulé JF, Doucet H. Regioselectivity in palladium-catalysed direct arylation of 5-membered ring heteroaromatics. Catal Sci Technol 2016. [DOI: 10.1039/c5cy02095f] [Citation(s) in RCA: 168] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the past few years, several results using modified catalysts and new reaction conditions have been reported permitting better control of the regioselectivity of Pd-catalysed arylations.
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Affiliation(s)
- Charles Beromeo Bheeter
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Lu Chen
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Jean-François Soulé
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
| | - Henri Doucet
- Organometalliques, Matériaux et Catalyse
- Institut des Sciences Chimiques de Rennes
- UMR 6226 CNRS-Université de Rennes 1
- 35042 Rennes
- France
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50
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Wei KJ, Quan ZJ, Zhang Z, Da YX, Wang XC. Direct C–H heteroarylation of azoles with 1,2-di(pyrimidin-2-yl)disulfides through C–S cleavage of disulfides. RSC Adv 2016. [DOI: 10.1039/c6ra18997k] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
C–C bond construction via C–H bond functionalization of oxazoles/thiazoles and C–S bond cleavage of di(hetero)aryl disulfides are described.
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Affiliation(s)
- Kai-Jie Wei
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Zheng-jun Quan
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Zhang Zhang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Yu-xia Da
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Xi-cun Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
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