1
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Gladkov AA, Levin VV, Dilman AD. Photoredox Promoted Barbier-Type Reaction of Alkyl Iodides with N-Alkyl and N-Aryl Imines. J Org Chem 2023; 88:1260-1269. [PMID: 36608025 DOI: 10.1021/acs.joc.2c02598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The reaction of organozinc reagents with unactivated imines is accelerated when performed in the presence of a photocatalyst under blue light irradiation. Coordination between Lewis acidic zinc iodide and the imine is a key factor responsible for the reaction efficiency. The method can be carried out using alkyl iodides under Barbier conditions.
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Affiliation(s)
- Anton A Gladkov
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation.,Lomonosov Moscow State University, Department of Chemistry, 119991, Moscow, Leninskie Gory 1-3, Russian Federation
| | - Vitalij V Levin
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
| | - Alexander D Dilman
- N. D. Zelinsky Institute of Organic Chemistry, 119991 Moscow, Leninsky prosp. 47, Russian Federation
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2
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Takimoto M, Liu M, Nishiura M, Hou Z. Regioselective Benzylic C–H Alumination and Further Functionalization of 2-Alkylpyridines by Yttrium Catalyst. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masanori Takimoto
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mingyu Liu
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- College of Chemistry, Nankai University, 94 Weijin Rd., Tianjin 300071, China
| | - Masayoshi Nishiura
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Zhaomin Hou
- Organometallic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Advanced Catalysis Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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3
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Xu G, Gao P, Colacot TJ. Tunable Unsymmetrical Ferrocene Ligands Bearing a Bulky Di-1-adamantylphosphino Motif for Many Kinds of C sp2–C sp3 Couplings. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00352] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Guolin Xu
- Research and Development, Life Science Chemistry, MilliporeSigma, 6000 N. Teutonia Avenue, Milwaukee, Wisconsin 53209, United States
| | - Peng Gao
- Research and Development, Life Science Chemistry, MilliporeSigma, 6000 N. Teutonia Avenue, Milwaukee, Wisconsin 53209, United States
| | - Thomas J. Colacot
- Research and Development, Life Science Chemistry, MilliporeSigma, 6000 N. Teutonia Avenue, Milwaukee, Wisconsin 53209, United States
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4
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Yedase GS, Jha AK, Yatham VR. Visible-Light Enabled C(s p3)-C(s p2) Cross-Electrophile Coupling via Synergistic Halogen-Atom Transfer (XAT) and Nickel Catalysis. J Org Chem 2022; 87:5442-5450. [PMID: 35357838 DOI: 10.1021/acs.joc.2c00251] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We herein report the first visible-light-mediated cross-coupling of unactivated alkyl iodides with aryl bromides through synergistic halogen atom transfer (XAT) and nickel catalysis. This simple protocol operates under mild reaction conditions and tolerates a variety of functional groups affording C(sp3)-C(sp2) cross-coupling products in good to moderate yields.
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Affiliation(s)
- Girish Suresh Yedase
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
| | - Avishek Kumar Jha
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
| | - Veera Reddy Yatham
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram 695551, India
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5
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Tomar R, Bhattacharya D, Arulananda Babu S. Direct lactamization of β‐arylated δ‐aminopentanoic acid carboxamides: En route to 4‐aryl‐ 2‐piperidones, piperidines, antituberculosis molecule Q203 (Telacebec) and its analogues. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100736] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Radha Tomar
- Indian Institute of Science Education and Research Mohali Chemical Sciences INDIA
| | | | - Srinivasarao Arulananda Babu
- Indian Institute of Science Education and Research Mohali Department of Chemical Sciences Knowledge City, Sector 81, SAS Nagar,Mohali, Manauli P.O., 140306 Mohali INDIA
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6
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Biswas S, Qu B, Desrosiers JN, Choi Y, Haddad N, Yee NK, Song JJ, Senanayake CH. Nickel-Catalyzed Cross-Electrophile Reductive Couplings of Neopentyl Bromides with Aryl Bromides. J Org Chem 2020; 85:8214-8220. [DOI: 10.1021/acs.joc.0c00549] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Soumik Biswas
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Bo Qu
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jean-Nicolas Desrosiers
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Younggi Choi
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nizar Haddad
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Nathan K. Yee
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Jinghua J. Song
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
| | - Chris H. Senanayake
- Chemical Development, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, United States
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7
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Keaveney ST, Kundu G, Schoenebeck F. Modular Functionalization of Arenes in a Triply Selective Sequence: Rapid C(sp 2 ) and C(sp 3 ) Coupling of C-Br, C-OTf, and C-Cl Bonds Enabled by a Single Palladium(I) Dimer. Angew Chem Int Ed Engl 2018; 57:12573-12577. [PMID: 30091504 PMCID: PMC6175235 DOI: 10.1002/anie.201808386] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Indexed: 01/01/2023]
Abstract
Full control over multiple competing coupling sites would enable straightforward access to densely functionalized compound libraries. Historically, the site selection in Pd0 -catalyzed functionalizations of poly(pseudo)halogenated arenes has been unpredictable, being dependent on the employed catalyst, the reaction conditions, and the substrate itself. Building on our previous report of C-Br-selective functionalization in the presence of C-OTf and C-Cl bonds, we herein complete the sequence and demonstrate the first general arylations and alkylations of C-OTf bonds (in <10 min), followed by functionalization of the C-Cl site (in <25 min), at room temperature using the same air- and moisture-stable PdI dimer. This allowed the realization of the first general and triply selective sequential C-C coupling (in 2D and 3D space) of C-Br followed by C-OTf and then C-Cl bonds.
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Affiliation(s)
- Sinead T. Keaveney
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
| | - Gourab Kundu
- Institute of Organic ChemistryRWTH Aachen UniversityLandoltweg 152074AachenGermany
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8
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Keaveney ST, Kundu G, Schoenebeck F. Modular Functionalization of Arenes in a Triply Selective Sequence: Rapid C(sp2
) and C(sp3
) Coupling of C−Br, C−OTf, and C−Cl Bonds Enabled by a Single Palladium(I) Dimer. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808386] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Sinead T. Keaveney
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Gourab Kundu
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Franziska Schoenebeck
- Institute of Organic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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9
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Barré B, Gonnard L, Guérinot A, Cossy J. Cobalt-Catalyzed (Hetero)arylation of Saturated Cyclic Amines with Grignard Reagents. Molecules 2018; 23:molecules23061449. [PMID: 29904007 PMCID: PMC6099817 DOI: 10.3390/molecules23061449] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/06/2018] [Accepted: 06/07/2018] [Indexed: 11/16/2022] Open
Abstract
(Hetero)aryl substituted saturated cyclic amines are ubiquitous scaffolds in biologically active molecules. Metal-catalyzed cross-couplings between halogeno N-heterocycles and organometallic species are efficient and modular reactions to access these attractive scaffolds. An overview of our work concerning the cobalt-catalyzed arylation of iodo-substituted cyclic amines is presented.
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Affiliation(s)
- Baptiste Barré
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI Paris, CNRS, PSL Research University 10, rue Vauquelin 75231 Paris CEDEX 05, France.
| | - Laurine Gonnard
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI Paris, CNRS, PSL Research University 10, rue Vauquelin 75231 Paris CEDEX 05, France.
| | - Amandine Guérinot
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI Paris, CNRS, PSL Research University 10, rue Vauquelin 75231 Paris CEDEX 05, France.
| | - Janine Cossy
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI Paris, CNRS, PSL Research University 10, rue Vauquelin 75231 Paris CEDEX 05, France.
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10
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Recent Advances in the Synthesis of Piperidines: Functionalization of Preexisting Ring Systems. ADVANCES IN HETEROCYCLIC CHEMISTRY 2018. [DOI: 10.1016/bs.aihch.2017.10.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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11
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Jansa J, Schmidt R, Mamuye AD, Castoldi L, Roller A, Pace V, Holzer W. Synthesis of tetrasubstituted pyrazoles containing pyridinyl substituents. Beilstein J Org Chem 2017; 13:895-902. [PMID: 28546847 PMCID: PMC5433223 DOI: 10.3762/bjoc.13.90] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 04/24/2017] [Indexed: 11/25/2022] Open
Abstract
A synthesis of tetrasubstituted pyrazoles containing two, three or four pyridinyl substituents is described. Hence, the reaction of 1,3-dipyridinyl-1,3-propanediones with 2-hydrazinopyridine or phenylhydrazine, respectively, affords the corresponding 1,3,5-trisubstituted pyrazoles. Iodination at the 4-position of the pyrazole nucleus by treatment with I2/HIO3 gives the appropriate 4-iodopyrazoles which served as starting materials for different cross-coupling reactions. Finally, Negishi cross-coupling employing organozinc halides and Pd catalysts turned out to be the method of choice to obtain the desired tetrasubstituted pyrazoles. The formation of different unexpected reaction products is described. Detailed NMR spectroscopic investigations (1H, 13C, 15N) were undertaken with all products prepared. Moreover, the structure of a condensation product was confirmed by crystal structure analysis.
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Affiliation(s)
- Josef Jansa
- Division of Drug Synthesis, Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
- Research Institute for Organic Syntheses (VUOS), Rybitví 296, CZ-533 54 Pardubice-Rybitví, Czech Republic
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, CZ-771 46 Olomouc, Czech Republic
| | - Ramona Schmidt
- Division of Drug Synthesis, Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
| | - Ashenafi Damtew Mamuye
- Division of Drug Synthesis, Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
| | - Laura Castoldi
- Division of Drug Synthesis, Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
| | - Alexander Roller
- X-ray Structure Analysis Centre, Faculty of Chemistry, University of Vienna, Währinger Straße 42, A-1090 Vienna, Austria
| | - Vittorio Pace
- Division of Drug Synthesis, Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
| | - Wolfgang Holzer
- Division of Drug Synthesis, Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria
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12
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Si T, Li B, Xiong W, Xu B, Tang W. Efficient cross-coupling of aryl/alkenyl triflates with acyclic secondary alkylboronic acids. Org Biomol Chem 2017; 15:9903-9909. [DOI: 10.1039/c7ob02531a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient cross-coupling between aryl/alkenyl triflates and acyclic secondary alkylboronic acids is realized by employing P,PO ligand L1/L2, providing a series of sterically congested acyclic secondary alkyl arenes/olefins in good to excellent yields. The method has enabled a concise and 4-step synthesis of a gossypol intermediate.
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Affiliation(s)
- Tengda Si
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Bowen Li
- State Key Laboratory of Bio-Organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Wenrui Xiong
- State Key Laboratory of Bio-Organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Bin Xu
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Wenjun Tang
- State Key Laboratory of Bio-Organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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13
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Gonnard L, Guérinot A, Cossy J. Cobalt-catalyzed cross-coupling of 3- and 4-iodopiperidines with Grignard reagents. Chemistry 2015; 21:12797-803. [PMID: 26179378 DOI: 10.1002/chem.201501543] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Indexed: 02/05/2023]
Abstract
A cobalt-catalyzed cross-coupling between 3- and 4-iodopiperidines and Grignard reagents is disclosed. The reaction is an efficient, cheap, chemoselective, and flexible way to functionalize piperidines. This coupling was used as the key step to realize a short synthesis of (±)-preclamol. Some mechanistic investigations were conducted that highlight the formation of radical intermediates.
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Affiliation(s)
- Laurine Gonnard
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin 75231 Paris Cedex 05 (France)
| | - Amandine Guérinot
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin 75231 Paris Cedex 05 (France).
| | - Janine Cossy
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231, ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin 75231 Paris Cedex 05 (France).
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14
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Molander GA, Traister KM, O’Neill BT. Engaging Nonaromatic, Heterocyclic Tosylates in Reductive Cross-Coupling with Aryl and Heteroaryl Bromides. J Org Chem 2015; 80:2907-11. [DOI: 10.1021/acs.joc.5b00135] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gary A. Molander
- Roy
and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Kaitlin M. Traister
- Roy
and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Brian T. O’Neill
- Pfizer Worldwide
Medicinal Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
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15
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Li C, Chen T, Li B, Xiao G, Tang W. Efficient Synthesis of Sterically Hindered Arenes Bearing Acyclic Secondary Alkyl Groups by Suzuki-Miyaura Cross-Couplings. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411518] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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16
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Li C, Chen T, Li B, Xiao G, Tang W. Efficient Synthesis of Sterically Hindered Arenes Bearing Acyclic Secondary Alkyl Groups by Suzuki-Miyaura Cross-Couplings. Angew Chem Int Ed Engl 2015; 54:3792-6. [DOI: 10.1002/anie.201411518] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Indexed: 11/07/2022]
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17
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Patel S, Cohen F, Dean BJ, De La Torre K, Deshmukh G, Estrada AA, Ghosh AS, Gibbons P, Gustafson A, Huestis MP, Le Pichon CE, Lin H, Liu W, Liu X, Liu Y, Ly CQ, Lyssikatos JP, Ma C, Scearce-Levie K, Shin YG, Solanoy H, Stark KL, Wang J, Wang B, Zhao X, Lewcock JW, Siu M. Discovery of Dual Leucine Zipper Kinase (DLK, MAP3K12) Inhibitors with Activity in Neurodegeneration Models. J Med Chem 2014; 58:401-18. [DOI: 10.1021/jm5013984] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Changyou Ma
- Department
of Chemistry, WuXi AppTec Co., Ltd., 288 Fute Zhonglu, Wai Gao Qiao Free
Trade Zone, Shanghai, 200131, P. R. China
| | | | | | | | | | - Jian Wang
- Department
of Chemistry, WuXi AppTec Co., Ltd., 288 Fute Zhonglu, Wai Gao Qiao Free
Trade Zone, Shanghai, 200131, P. R. China
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18
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Hu E, Chen N, Bourbeau MP, Harrington PE, Biswas K, Kunz RK, Andrews KL, Chmait S, Zhao X, Davis C, Ma J, Shi J, Lester-Zeiner D, Danao J, Able J, Cueva M, Talreja S, Kornecook T, Chen H, Porter A, Hungate R, Treanor J, Allen JR. Discovery of clinical candidate 1-(4-(3-(4-(1H-benzo[d]imidazole-2-carbonyl)phenoxy)pyrazin-2-yl)piperidin-1-yl)ethanone (AMG 579), a potent, selective, and efficacious inhibitor of phosphodiesterase 10A (PDE10A). J Med Chem 2014; 57:6632-41. [PMID: 25062128 DOI: 10.1021/jm500713j] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
We report the identification of a PDE10A clinical candidate by optimizing potency and in vivo efficacy of promising keto-benzimidazole leads 1 and 2. Significant increase in biochemical potency was observed when the saturated rings on morpholine 1 and N-acetyl piperazine 2 were changed by a single atom to tetrahydropyran 3 and N-acetyl piperidine 5. A second single atom modification from pyrazines 3 and 5 to pyridines 4 and 6 improved the inhibitory activity of 4 but not 6. In the in vivo LC-MS/MS target occupancy (TO) study at 10 mg/kg, 3, 5, and 6 achieved 86-91% occupancy of PDE10A in the brain. Furthermore, both CNS TO and efficacy in PCP-LMA behavioral model were observed in a dose dependent manner. With superior in vivo TO, in vivo efficacy and in vivo PK profiles in multiple preclinical species, compound 5 (AMG 579) was advanced as our PDE10A clinical candidate.
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Affiliation(s)
- Essa Hu
- Department of Medicinal Chemistry, ‡Department of Molecular Structure and Characterization, §Department of Pharmacokinetics and Drug Metabolism, ∥Department of Neuroscience, Amgen Inc. , One Amgen Center Drive, Thousand Oaks, California 93012-1799, United States
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19
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Molander GA, Traister KM, O’Neill BT. Reductive Cross-Coupling of Nonaromatic, Heterocyclic Bromides with Aryl and Heteroaryl Bromides. J Org Chem 2014; 79:5771-80. [DOI: 10.1021/jo500905m] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Gary A. Molander
- Roy
and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Kaitlin M. Traister
- Roy
and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Brian T. O’Neill
- Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
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20
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Vila C, Giannerini M, Hornillos V, Fañanás-Mastral M, Feringa BL. Palladium-catalysed direct cross-coupling of secondary alkyllithium reagents. Chem Sci 2014. [DOI: 10.1039/c3sc53047g] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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21
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Rocke BN, Bahnck KB, Herr M, Lavergne S, Mascitti V, Perreault C, Polivkova J, Shavnya A. Synthesis of sulfones from organozinc reagents, DABSO, and alkyl halides. Org Lett 2013; 16:154-7. [PMID: 24308287 DOI: 10.1021/ol4031233] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Organozinc reagents react with the SO2 surrogate DABSO, and the resulting zinc sulfinate salts are alkylated in situ to afford sulfones. This transformation has a broad scope and is compatible with a wide range of structural motifs of medicinal chemistry relevance including nitrile, secondary carbamates, and nitrogen-containing heterocycles.
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Affiliation(s)
- Benjamin N Rocke
- Pfizer Worldwide Medicinal Chemistry , Eastern Point Road, Groton, Connecticut 06340, United States
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22
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Enthaler S, Weidauer M, Irran E, Epping JD, Kretschmer R, Someya CI. Exploring the reactivity of nickel complexes in hydrodecyanation reactions. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.07.068] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Stereoselective palladium-catalyzed cross-coupling of (2-amido-1-phenylpropyl)zinc compounds with aryl bromides. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-3057-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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24
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Tang S, Li S, Zhou D, Zeng H, Wang N. Stereoselective C(sp3)-C(sp2) Negishi coupling of (2-amido-1-phenylpropyl)zinc compounds through the steric control of β-amido group. Sci China Chem 2013. [DOI: 10.1007/s11426-013-4880-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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25
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Weidauer M, Someya CI, Irran E, Enthaler S. Nickel-catalyzed Hydrodecyanation of Carbon-Cyano Bonds. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201200185] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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26
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Guo WJ, Wang ZX. Cross-coupling of ArX with ArMgBr catalyzed by N-heterocyclic carbene-based nickel complexes. J Org Chem 2013; 78:1054-61. [PMID: 23289643 DOI: 10.1021/jo302425x] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
N-Heterocyclic carbene-based pincer nickel complexes were synthesized and characterized. These complexes efficiently catalyze cross-coupling of aryl Grignard reagents with aryl chlorides or fluorides under mild conditions.
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Affiliation(s)
- Wang-Jun Guo
- CAS Key Laboratory of Soft Matter Chemistry and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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27
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Johansson Seechurn CCC, Kitching MO, Colacot TJ, Snieckus V. Palladium-Catalyzed Cross-Coupling: A Historical Contextual Perspective to the 2010 Nobel Prize. Angew Chem Int Ed Engl 2012; 51:5062-85. [PMID: 22573393 DOI: 10.1002/anie.201107017] [Citation(s) in RCA: 1983] [Impact Index Per Article: 165.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Indexed: 12/28/2022]
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28
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Johansson Seechurn CCC, Kitching MO, Colacot TJ, Snieckus V. Palladiumkatalysierte Kreuzkupplungen: eine historische Perspektive im Kontext der Nobel-Preise 2010. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107017] [Citation(s) in RCA: 452] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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29
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Zhang Q, Zhang XQ, Wang ZX. Nickel complexes supported by quinoline-based ligands: synthesis, characterization and catalysis in the cross-coupling of arylzinc reagents and aryl chlorides or aryltrimethylammonium salts. Dalton Trans 2012; 41:10453-64. [DOI: 10.1039/c2dt30886j] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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30
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Melzig L, Dennenwaldt T, Gavryushin A, Knochel P. Direct Aminoalkylation of Arenes, Heteroarenes, and Alkenes via Ni-Catalyzed Negishi Cross-Coupling Reactions. J Org Chem 2011; 76:8891-906. [DOI: 10.1021/jo201630e] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Laurin Melzig
- Department Chemie, Ludwig-Maximilians-University, Butenandtstr. 5-13, Munich, Germany
| | - Teresa Dennenwaldt
- Department Chemie, Ludwig-Maximilians-University, Butenandtstr. 5-13, Munich, Germany
| | - Andrey Gavryushin
- Department Chemie, Ludwig-Maximilians-University, Butenandtstr. 5-13, Munich, Germany
| | - Paul Knochel
- Department Chemie, Ludwig-Maximilians-University, Butenandtstr. 5-13, Munich, Germany
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31
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Bolliger JL, Frech CM. [Pd(Cl)2{P(NC5H10)(C6H11)2}2]--a highly effective and extremely versatile palladium-based Negishi catalyst that efficiently and reliably operates at low catalyst loadings. Chemistry 2010; 16:11072-81. [PMID: 20715208 DOI: 10.1002/chem.201001201] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
[Pd(Cl)(2){P(NC(5)H(10))(C(6)H(11))(2)}(2)] (1) has been prepared in quantitative yield by reacting commercially available [Pd(cod)(Cl)(2)] (cod=cyclooctadiene) with readily prepared 1-(dicyclohexylphosphanyl)piperidine in toluene under N(2) within a few minutes at room temperature. Complex 1 has proved to be an excellent Negishi catalyst, capable of quantitatively coupling a wide variety of electronically activated, non-activated, deactivated, sterically hindered, heterocyclic, and functionalized aryl bromides with various (also heterocyclic) arylzinc reagents, typically within a few minutes at 100 °C in the presence of just 0.01 mol% of catalyst. Aryl bromides containing nitro, nitrile, ether, ester, hydroxy, carbonyl, and carboxyl groups, as well as acetals, lactones, amides, anilines, alkenes, carboxylic acids, acetic acids, and pyridines and pyrimidines, have been successfully used as coupling partners. Furthermore, electronic and steric variations are tolerated in both reaction partners. Experimental observations strongly indicate that a molecular mechanism is operative.
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Affiliation(s)
- Jeanne L Bolliger
- Department of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
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32
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Nakao Y, Takeda M, Matsumoto T, Hiyama T. Cross-Coupling Reactions through the Intramolecular Activation of Alkyl(triorgano)silanes. Angew Chem Int Ed Engl 2010; 49:4447-50. [DOI: 10.1002/anie.201000816] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Nakao Y, Takeda M, Matsumoto T, Hiyama T. Cross-Coupling Reactions through the Intramolecular Activation of Alkyl(triorgano)silanes. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000816] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Slagt VF, de Vries AHM, de Vries JG, Kellogg RM. Practical Aspects of Carbon−Carbon Cross-Coupling Reactions Using Heteroarenes. Org Process Res Dev 2009. [DOI: 10.1021/op900221v] [Citation(s) in RCA: 179] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Vincent F. Slagt
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - André H. M. de Vries
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Johannes G. de Vries
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
| | - Richard M. Kellogg
- Syncom BV, Kadijk 3, 9747 AT Groningen, The Netherlands, DSM Pharmaceutical Products - Innovative Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands
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35
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Zhang C, Wang ZX. N-Heterocyclic Carbene-Based Nickel Complexes: Synthesis and Catalysis in Cross-Couplings of Aryl Chlorides with ArMX (M = Mg or Zn). Organometallics 2009. [DOI: 10.1021/om9006399] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cheng Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
| | - Zhong-Xia Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China
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36
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Wang JL, Bowen SJ, Schweitzer BA, Madsen HM, McDonald J, Pelc MJ, Tenbrink RE, Beidler D, Thorarensen A. Structure based design of novel irreversible FAAH inhibitors. Bioorg Med Chem Lett 2009; 19:5970-4. [PMID: 19765986 DOI: 10.1016/j.bmcl.2009.07.101] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2009] [Revised: 07/17/2009] [Accepted: 07/22/2009] [Indexed: 10/20/2022]
Abstract
Fatty acid amide hydrolase (FAAH) has attracted significant attention due to its promise as an analgesic target. This has resulted in the discovery of numerous chemical classes as inhibitors of this potential therapeutic target. In this paper we disclose a new series of novel FAAH irreversible azetidine urea inhibitors. In general these compounds illustrate potent activity against the rat FAAH enzyme. Our SAR studies allowed us to optimize this series resulting in the identification of compounds 13 which were potent inhibitors of both human and rat enzyme. This series of compounds illustrated good hydrolase selectivity along with good PK properties.
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Affiliation(s)
- Jane L Wang
- Pfizer Global Research and Development, 700 Chesterfield PKWY West, Chesterfield, MO 63017, USA.
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37
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Han C, Buchwald SL. Negishi coupling of secondary alkylzinc halides with aryl bromides and chlorides. J Am Chem Soc 2009; 131:7532-3. [PMID: 19441851 DOI: 10.1021/ja902046m] [Citation(s) in RCA: 205] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient palladium-catalyzed process has been developed for Negishi coupling of secondary alkylzinc halides with a wide range of aryl bromides and activated aryl chlorides. A palladium catalyst composed of a new biaryldialkylphosphine ligand, CPhos, effectively promotes the rate of the reductive elimination step relative to the rate of the undesired beta-hydride elimination. The broad substrate scope and excellent ratio of the desired secondary to the undesired primary coupling product make this method a powerful and reliable tool for C(sp(3))-C(sp(2)) bond formation.
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Affiliation(s)
- Chong Han
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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38
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Singer JM, Wilson MW, Johnson PD, Graham SR, Cooke LW, Roof RL, Boxer PA, Gold LH, Meltzer LT, Janssen A, Roush N, Campbell JE, Su TZ, Hurst SI, Stoner CL, Schwarz JB. Synthesis and SAR of tolylamine 5-HT6 antagonists. Bioorg Med Chem Lett 2009; 19:2409-12. [DOI: 10.1016/j.bmcl.2009.03.077] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Revised: 03/18/2009] [Accepted: 03/20/2009] [Indexed: 10/21/2022]
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39
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Scribner A, Moore JA, Ouvry G, Fisher M, Wyvratt M, Leavitt P, Liberator P, Gurnett A, Brown C, Mathew J, Thompson D, Schmatz D, Biftu T. Synthesis and biological activity of anticoccidial agents: 2,3-diarylindoles. Bioorg Med Chem Lett 2009; 19:1517-21. [PMID: 19195883 DOI: 10.1016/j.bmcl.2009.01.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2008] [Revised: 12/26/2008] [Accepted: 01/06/2009] [Indexed: 10/21/2022]
Abstract
Novel 2,3-diarylindoles bearing an amine substituent at the indole 5- and 6-positions have been synthesized and evaluated as anticoccidial agents in both in vitro and in vivo assays. Both subnanomolar in vitro activity and broad spectrum in vivo potency were detected for several compounds, particularly compound 27.
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Affiliation(s)
- Andrew Scribner
- SCYNEXIS, Inc., Discovery Chemistry, PO Box 12878, Research Triangle Park, NC 27709-2878, USA
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40
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Xi Z, Zhou Y, Chen W. Efficient Negishi coupling reactions of aryl chlorides catalyzed by binuclear and mononuclear nickel-N-heterocyclic carbene complexes. J Org Chem 2008; 73:8497-501. [PMID: 18841915 DOI: 10.1021/jo8018686] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe the first nickel-N-heterocyclic carbene catalyzed Negishi cross-coupling reaction of a variety of unactivated aryl chlorides, heterocyclic chlorides, aryl dichlorides, and vinyl chloride. The mononuclear and binuclear nickel-NHC complexes supported by heteroarene-functionalized NHC ligands are found to be highly efficient for the coupling of unactivated aryl chlorides and organozinc reagents, leading to biaryls and terphenyls in good to excellent yields under mild conditions. For all aryl chlorides, the binuclear nickel catalysts show activities higher than those of mononuclear nickel complexes because of possible bimetallic cooperative effect.
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Affiliation(s)
- Zhenxing Xi
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, PR China
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41
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Negishi cross-coupling reactions of α-amino acid-derived organozinc reagents and aromatic bromides. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.031] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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42
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Wang L, Wang ZX. Efficient Cross-Coupling of Aryl Chlorides with Arylzinc Reagents Catalyzed by Amido Pincer Complexes of Nickel. Org Lett 2007; 9:4335-8. [PMID: 17887695 DOI: 10.1021/ol701927g] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The nickel-catalyzed Negishi cross-coupling reaction of aryl chlorides with arylzinc compounds was investigated. The nickel complexes with the amido pincer type of ligands exhibited high catalytic activity and good functional group tolerance.
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Affiliation(s)
- Li Wang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PRC
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43
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Morrill C, Mani NS. Synthesis of 4-Arylpiperidines from 1-Benzyl-4-piperidone: Application of the Shapiro Reaction and Alkenylsilane Cross-Coupling. Org Lett 2007; 9:1505-8. [PMID: 17362023 DOI: 10.1021/ol070241c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] 1-Benzyl-3,4-unsaturated-4-piperidinyl benzyldimethylsilane has been prepared and observed to readily undergo palladium-catalyzed cross-coupling reactions with a variety of aryl iodides and aryl bromides to generate 3,4-unsaturated 4-arylpiperidines, often at ambient temperature.
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Affiliation(s)
- Christie Morrill
- Department of Drug Discovery, Johnson & Johnson Pharmaceutical R&D LLC, 3210 Merryfield Row, San Diego, California 92121, USA.
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44
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Chung JYL, Cvetovich RJ, McLaughlin M, Amato J, Tsay FR, Jensen M, Weissman S, Zewge D. Synthesis of a Naphthyridone p38 MAP Kinase Inhibitor. J Org Chem 2006; 71:8602-9. [PMID: 17064039 DOI: 10.1021/jo061618f] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Compound 1 is a p38 MAP kinase inhibitor potentially useful for the treatment of rheumatoid arthritis and psoriasis. A novel six-step synthesis suitable for large-scale preparation was developed in support of a drug development program at Merck Research Laboratories. The key steps include a tandem Heck-lactamization, N-oxidation, and a highly chemoselective Grignard addition of 4-(N-tert-butylpiperidinyl)magnesium chloride to a naphthyridone N-oxide. The N-oxide exerted complete chemoselectivity via chelation in directing the Grignard addition to the alpha position as opposed to 1,4-addition on the ene-lactam. The dihydropyridyl adduct was in situ aromatized with isobutylchloroformate followed by heating in pyridine. Syntheses of Grignard precursor, N-tert-butyl-4-chloro-piperidine, were accomplished via transamination with a quaternary ammonium piperidone or via addition of methylmagnesium chloride to an iminium ion. Utilizing this chemistry, multi-kilogram preparation of compound 1 was successfully demonstrated.
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Affiliation(s)
- John Y L Chung
- Process Research, Merck Research Laboratories, P.O. Box 2000, Rahway, New Jersey 07965, USA
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45
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Kondolff I, Doucet H, Santelli M. Palladium−Tetraphosphine as Catalyst Precursor for High-Turnover-Number Negishi Cross-Coupling of Alkyl- or Phenylzinc Derivatives with Aryl Bromides. Organometallics 2006. [DOI: 10.1021/om060605p] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Isabelle Kondolff
- Laboratoire de Synthèse Organique Associé au CNRS, Faculté des Sciences de Saint Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Henri Doucet
- Laboratoire de Synthèse Organique Associé au CNRS, Faculté des Sciences de Saint Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
| | - Maurice Santelli
- Laboratoire de Synthèse Organique Associé au CNRS, Faculté des Sciences de Saint Jérôme, Avenue Escadrille Normandie-Niemen, 13397 Marseille Cedex 20, France
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46
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Ghosh S, Kinney WA, Gauthier DA, Lawson EC, Hudlicky T, Maryanoff BE. Convenient preparation of aryl-substituted nortropanes by SuzukiMiyaura methodology. CAN J CHEM 2006. [DOI: 10.1139/v06-045] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The synthesis of a new bicyclic vinyl boronate (5) was accomplished from N-Boc-nortropinone (6) in two steps. The SuzukiMiyaura coupling of 5 to a variety of aryl bromides and triflates afforded 3-aryl-8-azabicyclo[3.2.1]oct-2-enes in good yields by adjusting the substrate and (or) reaction conditions. Reduction to the 3-aryl-8-azabicyclo[3.2.1]octanes was achieved by hydrogenation. Interestingly, the coupling was also successful with benzyl bromides, providing entry into another group of intermediates.Key words: nortropane, SuzukiMiyaura, boronate, piperidine, GPCR, benzyl bromide.
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47
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Z. Zard S, Vila X. Synthesis of Substituted 4-Arylpiperidin-2-ones by a 6-exo-Trig Radical Cyclization. HETEROCYCLES 2006. [DOI: 10.3987/com-06-s(w)7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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