1
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Abu-Safieh K, El-Barghouthi MI, Khanfar MA, Salameh BA, Al-Aqrabawi IS, Hourani BJA, Ali BF. Crystal structure of 1-(1,3-dimethyl-4-nitro-1H-pyrazol-5-yl)-3,5-diphenyl-1H-pyrazole and molecular docking studies of 1-(1,3-dimethyl-4-nitro-1H-pyrazol-5-yl)-3,5-diphenyl-1H-pyrazole and 5-methyl-1-(1,3-dimethyl-4-nitro-1H-pyrazol-5-yl)-3-phenyl-1H-pyrazole towards tyrosine kinases. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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2
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Mohjer F, Mofatehnia P, Rangraz Y, Heravi MM. Pd-free, Sonogashira cross-coupling reaction. An update. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121712] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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3
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Laha JK, Singh N, Hunjan MK. Synthesis of unsymmetrical urea from aryl- or pyridyl carboxamides and aminopyridines using PhI(OAc) 2via in situ formation of aryl- or pyridyl isocyanates. NEW J CHEM 2021. [DOI: 10.1039/d1nj03160k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of unsymmetrical ureas (N-aryl-N′-pyridylurea and N,N′-bipyridylurea) from aryl- or pyridyl carboxamides and aminopyridines in the presence of PhI(OAc)2 has been reported. The formation of pyridylisocyanates from their corresponding carboxamides via Hofmann rearrangement is confirmed.
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Affiliation(s)
- Joydev K. Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Neha Singh
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Mandeep Kaur Hunjan
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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4
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Sen A, Dhital RN, Sato T, Ohno A, Yamada YMA. Switching from Biaryl Formation to Amidation with Convoluted Polymeric Nickel Catalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03888] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Abhijit Sen
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Raghu N. Dhital
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Takuma Sato
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Aya Ohno
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
| | - Yoichi M. A. Yamada
- RIKEN Center for Sustainable Resource Science, Wako, Saitama 351-0198, Japan
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5
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Singer RA. BippyPhos: A Highly Versatile Ligand for Pd‐Catalyzed C−N, C−O and C−C Couplings. Isr J Chem 2020. [DOI: 10.1002/ijch.201900170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Robert A. Singer
- Chemical Research and DevelopmentPfizer Worldwide Research and Development, Groton Labs Eastern Point Road Groton CT 06340 United States
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6
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He X, Yang C, Wu Y, Xie M, Li R, Duan J, Shang Y. Synthesis of unsymmetrical urea derivatives via one-pot sequential three-component reactions of cyclic 2-diazo-1,3-diketones, carbodiimides, and 1,2-dihaloethanes. Org Biomol Chem 2020; 18:4178-4182. [DOI: 10.1039/d0ob00683a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
An effective and operationally simple one-pot strategy has been developed for the synthesis of unsymmetrical urea derivatives via sequential three-component reactions of cyclic 2-dizao-1,3-diketones with carbodiimides and 1,2-dihaloethane.
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Affiliation(s)
- Xinwei He
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base)
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Cheng Yang
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base)
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Yinsong Wu
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base)
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Mengqing Xie
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base)
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Ruxue Li
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base)
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Jiahui Duan
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base)
- College of Chemistry and Materials Science
- Anhui Normal University
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base)
- College of Chemistry and Materials Science
- Anhui Normal University
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7
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Peng L, Hu Z, Tang Z, Jiao Y, Xu X. Recent progress in transition metal catalyzed cross coupling of nitroarenes. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.04.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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8
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Palladium-free and phosphine-free Sonogashira coupling reaction of aryl halides with terminal alkynes catalyzed by boehmite nanoparticle-anchored Cu(I) diethylenetriamine complex. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3079-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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9
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Abstract
![]()
Pd-catalyzed
cross-coupling reactions that form C–N bonds
have become useful methods to synthesize anilines and aniline derivatives,
an important class of compounds throughout chemical research. A key
factor in the widespread adoption of these methods has been the continued
development of reliable and versatile catalysts that function under
operationally simple, user-friendly conditions. This review provides
an overview of Pd-catalyzed N-arylation reactions found in both basic
and applied chemical research from 2008 to the present. Selected examples
of C–N cross-coupling reactions between nine classes of nitrogen-based
coupling partners and (pseudo)aryl halides are described for the synthesis
of heterocycles, medicinally relevant compounds, natural products,
organic materials, and catalysts.
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Affiliation(s)
- Paula Ruiz-Castillo
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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10
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Lam BV, Berhault Y, Stiebing S, Fossey C, Cailly T, Collot V, Fabis F. Iodoindazoles with Selective Magnesiation at Position 3: A Route to Highly Functionalized Indazoles. Chemistry 2016; 22:4440-6. [DOI: 10.1002/chem.201504828] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Bao Vy Lam
- Normandie Université; France
- Université de Caen Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M - SF 4206 ICORE), UFR des Sciences Pharmaceutiques, Bd Becquerel, CS; 14032 Caen cedex 5 France
| | - Yohann Berhault
- Normandie Université; France
- Université de Caen Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M - SF 4206 ICORE), UFR des Sciences Pharmaceutiques, Bd Becquerel, CS; 14032 Caen cedex 5 France
| | - Silvia Stiebing
- Normandie Université; France
- Université de Caen Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M - SF 4206 ICORE), UFR des Sciences Pharmaceutiques, Bd Becquerel, CS; 14032 Caen cedex 5 France
| | - Christine Fossey
- Normandie Université; France
- Université de Caen Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M - SF 4206 ICORE), UFR des Sciences Pharmaceutiques, Bd Becquerel, CS; 14032 Caen cedex 5 France
| | - Thomas Cailly
- Normandie Université; France
- Université de Caen Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M - SF 4206 ICORE), UFR des Sciences Pharmaceutiques, Bd Becquerel, CS; 14032 Caen cedex 5 France
| | - Valérie Collot
- Normandie Université; France
- Université de Caen Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M - SF 4206 ICORE), UFR des Sciences Pharmaceutiques, Bd Becquerel, CS; 14032 Caen cedex 5 France
| | - Frédéric Fabis
- Normandie Université; France
- Université de Caen Normandie, CERMN (EA 4258 - FR CNRS 3038 INC3M - SF 4206 ICORE), UFR des Sciences Pharmaceutiques, Bd Becquerel, CS; 14032 Caen cedex 5 France
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11
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Mohadeszadeh M, Eshghi H, Saberi S, Gholizadeh M. Synthesis of New Multi-Functionalised 1,1′-Carbonylbispyrazole Derivatives. JOURNAL OF CHEMICAL RESEARCH 2015. [DOI: 10.3184/174751915x14271377629065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A new series of multi-functionalised 1,1′-carbonylbispyrazole derivatives were synthesised through cyclisation of pyrazole carbohydrazides with some substituted methylene malononitriles in very good yields. The structures of all synthesised compounds were established on the basis of NMR, IR, MS and elemental analysis.
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Affiliation(s)
- Manijeh Mohadeszadeh
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, PO Box 91775-1436, Mashhad, Iran
| | - Hossein Eshghi
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, PO Box 91775-1436, Mashhad, Iran
| | - Sattar Saberi
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, PO Box 91775-1436, Mashhad, Iran
| | - Mostafa Gholizadeh
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, PO Box 91775-1436, Mashhad, Iran
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12
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Belfrage AK, Gising J, Svensson F, Åkerblom E, Sköld C, Sandström A. Efficient and Selective Palladium-Catalysed C-3 Urea Couplings to 3,5-Dichloro-2(1H)-pyrazinones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403405] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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13
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Reddy NV, Kumar PS, Reddy PS, Kantam ML, Reddy KR. Synthesis of unsymmetrical phenylurea derivatives via oxidative cross coupling of aryl formamides with amines under metal-free conditions. NEW J CHEM 2015. [DOI: 10.1039/c4nj01668h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A direct transformation of N-aryl formamides to the corresponding phenylurea derivatives via the formation of isocyanate intermediates is achieved in good yields using hypervalent iodine reagents as external oxidants.
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Affiliation(s)
- Nagireddy Veera Reddy
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
| | - Pailla Santhosh Kumar
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
| | - Peddi Sudhir Reddy
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
| | - Mannepalli Lakshmi Kantam
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
| | - Kallu Rajender Reddy
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad-500 007
- India
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14
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Dalvadi JP, Patel PK, Chikhalia KH. A tandem and tunable Pd catalyzed C–N coupling of heteroarenols with ureas via C–OH bond activation. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.10.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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15
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Voronova K, Homolya L, Udvardy A, Bényei AC, Joó F. Pd-tetrahydrosalan-type complexes as catalysts for sonogashira couplings in water: efficient greening of the procedure. CHEMSUSCHEM 2014; 7:2230-2239. [PMID: 24995656 DOI: 10.1002/cssc.201402147] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Indexed: 06/03/2023]
Abstract
New sulfonated tetrahydrosalen-type ligands and their water-soluble palladium(II) complexes have been synthesized. The palladium(II) complexes catalyze the Sonogashira coupling (23 examples) of various aryl halides (including chloroarenes) with terminal alkynes, with good to excellent conversions under mild conditions (80°C, air, no Cu(I) cocatalyst) in aqueous-organic mixtures and turnover frequencies of up to 2790 h(-1) . Under optimized reaction conditions to minimize environmental contamination, diphenylacetylenes can be isolated in 76-98% yield. The aqueous catalyst solution can be recycled four times with decreasing activity; however, yields between 93 and 98% can still be achieved with extended reaction times. Several water-insoluble products can be isolated in excellent yield by simple filtration and purification by washing with water; this method is used, for the first time, for this type of C-C coupling procedure.
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Affiliation(s)
- Krisztina Voronova
- Department of Physical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen (Hungary); Current address: Department of Chemistry, University of the Pacific, 3601 Pacific Avenue, Stockton, CA 95211 (USA).
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16
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Manjunatha SG, Bachu S, Kadambar VK, Murugan A, Ramasubramanian S, Ramachandra P, Nambiar S. A novel synthetic approach to 4-acetamido-1-arylindazoles via Semmler–Wolff rearrangement of 1-aryl-6,7-dihydro-5H-indazol-4-one oxime. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.04.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Crawford SM, Lavery CB, Stradiotto M. BippyPhos: a single ligand with unprecedented scope in the Buchwald-Hartwig amination of (hetero)aryl chlorides. Chemistry 2013; 19:16760-71. [PMID: 24281816 DOI: 10.1002/chem.201302453] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Indexed: 12/21/2022]
Abstract
Over the past two decades, considerable attention has been given to the development of new ligands for the palladium-catalyzed arylation of amines and related NH-containing substrates (i.e., Buchwald-Hartwig amination). The generation of structurally diverse ligands, by research groups in both academia and industry, has facilitated the accommodation of sterically and electronically divergent substrates including ammonia, hydrazine, amines, amides, and NH heterocycles. Despite these achievements, problems with catalyst generality persist and access to multiple ligands is necessary to accommodate all of these NH-containing substrates. In our quest to address this significant limitation we identified the BippyPhos/[Pd(cinnamyl)Cl]2 catalyst system as being capable of catalyzing the amination of a variety of functionalized (hetero)aryl chlorides, as well as bromides and tosylates, at moderate to low catalyst loadings. The successful transformations described herein include primary and secondary amines, NH heterocycles, amides, ammonia and hydrazine, thus demonstrating the largest scope in the NH-containing coupling partner reported for a single Pd/ligand catalyst system. We also established BippyPhos/[Pd(cinnamyl)Cl]2 as exhibiting the broadest demonstrated substrate scope for metal-catalyzed cross-coupling of (hetero)aryl chlorides with NH indoles. Furthermore, the remarkable ability of BippyPhos/[Pd(cinnamyl)Cl]2 to catalyze both the selective monoarylation of ammonia and the N-arylation of indoles was exploited in the development of a new one-pot, two-step synthesis of N-aryl heterocycles from ammonia, ortho-alkynylhalo(hetero)arenes and (hetero) aryl halides through tandem N-arylation/hydroamination reactions. Although the scope in the NH-containing coupling partner is broad, BippyPhos/[Pd(cinnamyl)Cl]2 also displays a marked selectivity profile that was exploited in the chemoselective monoarylation of substrates featuring two chemically distinct NH-containing moieties.
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Affiliation(s)
- Sarah M Crawford
- Department of Chemistry, Dalhousie University, 6274 Coburg Rd., P. O. Box 15000, Halifax, NS, B3H 4R2 (Canada)
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18
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Mohy El Dine T, Chapron S, Duclos MC, Duguet N, Popowycz F, Lemaire M. One-Pot, Solvent-Free Access to Unsymmetrical Ureas by Palladium-Catalysed Reductive Alkylation Using Molecular Hydrogen. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300642] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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19
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Liu HJ, Hung SF, Chen CL, Lin MH. A method for the regioselective synthesis of 1-alkyl-1H-indazoles. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Palladium-free synthesis of unsymmetrical diarylethynes by cross-coupling reaction of alkynylboronates with aryl iodides catalyzed by CuCl. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.11.069] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Kumar GS, Kumar RA, Kumar PS, Reddy NV, Kumar KV, Kantam ML, Prabhakar S, Reddy KR. Copper catalyzed oxidative coupling of amines with formamides: a new approach for the synthesis of unsymmetrical urea derivatives. Chem Commun (Camb) 2013; 49:6686-8. [DOI: 10.1039/c3cc42381f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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22
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Dalvadi JP, Patel PK, Chikhalia KH. A quick and flexible synthetic approach to enureas (alkenyl ureas) via the Pd-catalyzed C–N coupling reaction of alkenyl tosylates and mesylates. RSC Adv 2013. [DOI: 10.1039/c3ra44195d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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23
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Dalvadi JP, Patel PK, Chikhalia KH. Convenient synthesis of s-triazine based urea derivatives via a palladium catalyzed C–N coupling reaction. RSC Adv 2013. [DOI: 10.1039/c3ra40490k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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24
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Nishihara Y, Inoue E, Noyori S, Ogawa D, Okada Y, Iwasaki M, Takagi K. Synthesis of unsymmetrically disubstituted ethynes by the palladium/copper(I)-cocatalyzed sila-Sonogashira–Hagihara coupling reactions of alkynylsilanes with aryl iodides, bromides, and chlorides through a direct activation of a carbon–silicon bond. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.093] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Bromodimethylsulfonium bromide (BDMS)-mediated Lossen rearrangement: synthesis of unsymmetrical ureas. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.03.129] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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26
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Ambrosi G, Formica M, Fusi V, Giorgi L, Macedi E, Piersanti G, Retini M, Varrese MA, Zappia G. New coumarin-urea based receptor for anions: a selective off–on fluorescence response to fluoride. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.02.067] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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27
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Guan ZH, Lei H, Chen M, Ren ZH, Bai Y, Wang YY. Palladium-Catalyzed Carbonylation of Amines: Switchable Approaches to Carbamates and N,N′-Disubstituted Ureas. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100545] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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28
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Basavaprabhu H, Sureshbabu VV. Iron(iii) catalysed synthesis of unsymmetrical di and trisubstituted ureas – a variation of classical Ritter reaction. Org Biomol Chem 2012; 10:2528-33. [DOI: 10.1039/c2ob06916d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Breitler S, Oldenhuis NJ, Fors BP, Buchwald SL. Synthesis of unsymmetrical diarylureas via Pd-catalyzed C-N cross-coupling reactions. Org Lett 2011; 13:3262-5. [PMID: 21604792 PMCID: PMC3127456 DOI: 10.1021/ol201210t] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A facile synthesis of unsymmetrical N,N'-diarylureas is described. The utilization of the Pd-catalyzed arylation of ureas enables the synthesis of an array of diarylureas in good to excellent yields from benzylurea via a one-pot arylation-deprotection protocol, followed by a second arylation.
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Affiliation(s)
- Simon Breitler
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Nathan J. Oldenhuis
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Brett P. Fors
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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31
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Wheeler RC, Baxter E, Campbell IB, Macdonald SJF. A General, One-Step Synthesis of Substituted Indazoles using a Flow Reactor. Org Process Res Dev 2011. [DOI: 10.1021/op100288t] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rob C. Wheeler
- GlaxoSmithKline, Gunnels Wood Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Emma Baxter
- GlaxoSmithKline, Gunnels Wood Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Ian B. Campbell
- GlaxoSmithKline, Gunnels Wood Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
| | - Simon J. F. Macdonald
- GlaxoSmithKline, Gunnels Wood Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, U.K
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32
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Magano J, Dunetz JR. Large-Scale Applications of Transition Metal-Catalyzed Couplings for the Synthesis of Pharmaceuticals. Chem Rev 2011; 111:2177-250. [PMID: 21391570 DOI: 10.1021/cr100346g] [Citation(s) in RCA: 1278] [Impact Index Per Article: 98.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Javier Magano
- Research API, Pharmaceutical Sciences, Pfizer, Inc., Eastern Point Road, Groton, Connecticut 06340, United States
| | - Joshua R. Dunetz
- Research API, Pharmaceutical Sciences, Pfizer, Inc., Eastern Point Road, Groton, Connecticut 06340, United States
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Yongpruksa N, Calkins NL, Harmata M. Efficient palladium-catalyzed N-arylation of a sulfoximine with aryl chlorides. Chem Commun (Camb) 2011; 47:7665-7. [DOI: 10.1039/c1cc12444g] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gowrisankar S, Sergeev AG, Anbarasan P, Spannenberg A, Neumann H, Beller M. A general and efficient catalyst for palladium-catalyzed C-O coupling reactions of aryl halides with primary alcohols. J Am Chem Soc 2010; 132:11592-8. [PMID: 20672810 DOI: 10.1021/ja103248d] [Citation(s) in RCA: 188] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An efficient procedure for palladium-catalyzed coupling reactions of (hetero)aryl bromides and chlorides with primary aliphatic alcohols has been developed. Key to the success is the synthesis and exploitation of the novel bulky di-1-adamantyl-substituted bipyrazolylphosphine ligand L6. Reaction of aryl halides including activated, nonactivated, and (hetero)aryl bromides as well as aryl chlorides with primary alcohols gave the corresponding alkyl aryl ethers in high yield. Noteworthy, functionalizations of primary alcohols in the presence of secondary and tertiary alcohols proceed with excellent regioselectivity.
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Affiliation(s)
- Saravanan Gowrisankar
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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Wei Y, Liu J, Lin S, Ding H, Liang F, Zhao B. Acetoacetanilides as Masked Isocyanates: Facile and Efficient Synthesis of Unsymmetrically Substituted Ureas. Org Lett 2010; 12:4220-3. [DOI: 10.1021/ol101474f] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Ying Wei
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jing Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Shaoxia Lin
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Hongqian Ding
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Fushun Liang
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Baozhong Zhao
- Department of Chemistry, Northeast Normal University, Changchun 130024, China
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Discovery of TRPV1 antagonist ABT-116. Bioorg Med Chem Lett 2010; 20:3291-4. [DOI: 10.1016/j.bmcl.2010.04.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2010] [Revised: 04/07/2010] [Accepted: 04/12/2010] [Indexed: 11/23/2022]
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