251
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252
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Liu X, Liu Y, Chai G, Qiao B, Zhao X, Jiang Z. Organocatalytic Enantioselective Addition of α-Aminoalkyl Radicals to Isoquinolines. Org Lett 2018; 20:6298-6301. [PMID: 30256118 DOI: 10.1021/acs.orglett.8b02791] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
With a dual organocatalytic system involving a chiral phosphoric acid and a dicyanopyrazine-derived chromophore (DPZ) photosensitizer and under the irradiation with visible light, an enantioselective Minisci-type addition of α-amino acid-derived redox-active esters (RAEs) to isoquinolines has been developed. A variety of prochiral α-aminoalkyl radicals generated from RAEs were successfully introduced on isoquinolines, providing a range of valuable α-isoquinoline-substituted chiral secondary amines in high yields with good to excellent enantioselectivities.
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Affiliation(s)
- Xiangyuan Liu
- Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , P. R. China
| | - Yang Liu
- Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , P. R. China
| | - Guobi Chai
- Key Laboratory of Tobacco Flavor Basic Research of CNTC , Zhengzhou Tobacco Research Institute of CNTC , Zhengzhou , Henan 450001 , P. R. China
| | - Baokun Qiao
- Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , P. R. China
| | - Xiaowei Zhao
- Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , P. R. China
| | - Zhiyong Jiang
- Key Laboratory of Natural Medicine and Immuno-Engineering , Henan University , Kaifeng 475004 , P. R. China.,School of Chemistry and Chemical Engineering , Henan Normal University , Xinxiang , Henan 453007 , P. R. China
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253
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Bosset C, Beucher H, Bretel G, Pasquier E, Queguiner L, Henry C, Vos A, Edwards JP, Meerpoel L, Berthelot D. Minisci-Photoredox-Mediated α-Heteroarylation of N-Protected Secondary Amines: Remarkable Selectivity of Azetidines. Org Lett 2018; 20:6003-6006. [DOI: 10.1021/acs.orglett.8b00991] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Cyril Bosset
- Janssen Research and Development, Division of Janssen-Cilag S.A., Chaussée du Vexin, Val de Reuil 27100 Cedex, France
| | - Hélène Beucher
- Janssen Research and Development, Division of Janssen-Cilag S.A., Chaussée du Vexin, Val de Reuil 27100 Cedex, France
| | - Guillaume Bretel
- Janssen Research and Development, Division of Janssen-Cilag S.A., Chaussée du Vexin, Val de Reuil 27100 Cedex, France
| | - Elisabeth Pasquier
- Janssen Research and Development, Division of Janssen-Cilag S.A., Chaussée du Vexin, Val de Reuil 27100 Cedex, France
| | - Laurence Queguiner
- Janssen Research and Development, Division of Janssen-Cilag S.A., Chaussée du Vexin, Val de Reuil 27100 Cedex, France
| | - Cyril Henry
- Janssen Research and Development, Division of Janssen-Cilag S.A., Chaussée du Vexin, Val de Reuil 27100 Cedex, France
| | - Ann Vos
- Janssen Research and Development, Division of Janssen Pharmaceutica N.V., Turnhoutseweg 30, 2340 Beerse, Belgium
| | - James P. Edwards
- Janssen Research and Development, LLC, 1400 McKean Road, Spring House, Pennsylvania 19002, United States
| | - Lieven Meerpoel
- Janssen Research and Development, Division of Janssen Pharmaceutica N.V., Turnhoutseweg 30, 2340 Beerse, Belgium
| | - Didier Berthelot
- Janssen Research and Development, Division of Janssen-Cilag S.A., Chaussée du Vexin, Val de Reuil 27100 Cedex, France
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254
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Kunikawa S, Tanaka A, Takasuna Y, Tasaki M, Chida N. A novel 2,4-diaminopyrimidine derivative as selective inhibitor of protein kinase C theta prevents allograft rejection in a rat heart transplant model. Bioorg Med Chem 2018; 26:5499-5509. [PMID: 30274941 DOI: 10.1016/j.bmc.2018.09.029] [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: 07/20/2018] [Revised: 09/21/2018] [Accepted: 09/22/2018] [Indexed: 10/28/2022]
Abstract
Protein kinase C theta (PKCθ) plays a critical role in T cell signaling and is an attractive target for the treatment of T cell-mediated diseases such as transplant rejection and autoimmune disease. To identify PKCθ inhibitors, we focused on the 2,6-diamino-3-carbamoyl-5-cyanopyrazine derivative 2, which exhibited moderate PKCθ inhibitory activity. Optimization of 2 identified the 2,4-diamino-5-cyanopyrimidine derivative 16c, which exhibited potent PKCθ inhibitory activity and showed good selectivity against other PKC isozymes. Compound 16c prolonged graft survival in an in vivo rat heterotopic cardiac transplant model.
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Affiliation(s)
- Shigeki Kunikawa
- Drug Discovery Research, Astellas Pharma Inc., 21, Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan.
| | - Akira Tanaka
- Drug Discovery Research, Astellas Pharma Inc., 21, Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Yuji Takasuna
- Drug Discovery Research, Astellas Pharma Inc., 21, Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Mamoru Tasaki
- Drug Discovery Research, Astellas Pharma Inc., 21, Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Noboru Chida
- Drug Discovery Research, Astellas Pharma Inc., 21, Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
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255
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Sharma S, Kumar M, Vishwakarma RA, Verma MK, Singh PP. Room Temperature Metal-Catalyzed Oxidative Acylation of Electron-Deficient Heteroarenes with Alkynes, Its Mechanism, and Application Studies. J Org Chem 2018; 83:12420-12431. [DOI: 10.1021/acs.joc.8b01475] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shweta Sharma
- Medicinal Chemistry Division, Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
| | - Mukesh Kumar
- Medicinal Chemistry Division, Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
| | - Ram A. Vishwakarma
- Medicinal Chemistry Division, Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
| | - Mahendra K. Verma
- Analytical Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
| | - Parvinder Pal Singh
- Medicinal Chemistry Division, Academy of Scientific and Innovative Research, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
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256
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Kanyiva KS, Hamada D, Makino S, Takano H, Shibata T. α-Amino Acid Sulfonamides as Versatile Sulfonylation Reagents: Silver-Catalyzed Synthesis of Coumarins and Oxindoles by Radical Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800901] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center for Science and Engineering; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Daisuke Hamada
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Sohei Makino
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Hideaki Takano
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry; School of Advanced Science and Engineering; Waseda University; Shinjuku 169-8555 Tokyo Japan
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257
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Bissonnette NB, Boyd MJ, May GD, Giroux S, Nuhant P. C–H Functionalization of Heteroarenes Using Unactivated Alkyl Halides through Visible-Light Photoredox Catalysis under Basic Conditions. J Org Chem 2018; 83:10933-10940. [DOI: 10.1021/acs.joc.8b01589] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Noah B. Bissonnette
- Vertex Pharmaceuticals Inc., 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Michael J. Boyd
- Vertex Pharmaceuticals Inc., 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Gregory D. May
- Vertex Pharmaceuticals Inc., 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Simon Giroux
- Vertex Pharmaceuticals Inc., 50 Northern Avenue, Boston, Massachusetts 02210, United States
| | - Philippe Nuhant
- Vertex Pharmaceuticals Inc., 50 Northern Avenue, Boston, Massachusetts 02210, United States
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258
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259
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Wei XJ, Noël T. Visible-Light Photocatalytic Difluoroalkylation-Induced 1, 2-Heteroarene Migration of Allylic Alcohols in Batch and Flow. J Org Chem 2018; 83:11377-11384. [PMID: 30020781 PMCID: PMC6154216 DOI: 10.1021/acs.joc.8b01624] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
A convenient method for the preparation
of sp3-rich
heterocycles is reported. The method comprises a photocatalytic difluoroalkylation-induced
1,2-heteroarene migration of allylic alcohols. Here we describe for
the first time the benefits of using flow to facilitate such migration
reactions, including shorter reaction times, higher selectivities,
and opportunities to scale the chemistry.
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Affiliation(s)
- Xiao-Jing Wei
- Department of Chemical Engineering and Chemistry, Micro Flow Chemistry & Process Technology , Eindhoven University of Technology , Den Dolech 2 , 5612 AZ Eindhoven , The Netherlands
| | - Timothy Noël
- Department of Chemical Engineering and Chemistry, Micro Flow Chemistry & Process Technology , Eindhoven University of Technology , Den Dolech 2 , 5612 AZ Eindhoven , The Netherlands
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260
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Zhang XY, Weng WZ, Liang H, Yang H, Zhang B. Visible-Light-Initiated, Photocatalyst-Free Decarboxylative Coupling of Carboxylic Acids with N-Heterocycles. Org Lett 2018; 20:4686-4690. [DOI: 10.1021/acs.orglett.8b02016] [Citation(s) in RCA: 84] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao-Yu Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Wei-Zhi Weng
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Hao Liang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Hua Yang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
| | - Bo Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjia Xiang, Nanjing 210009, China
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261
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Khrizanforov MN, Fedorenko SV, Mustafina AR, Kholin KV, Nizameev IR, Strekalova SO, Grinenko VV, Gryaznova TV, Zairov RR, Mazzaro R, Morandi V, Vomiero A, Budnikova YH. Silica-supported silver nanoparticles as an efficient catalyst for aromatic C-H alkylation and fluoroalkylation. Dalton Trans 2018; 47:9608-9616. [PMID: 29855006 DOI: 10.1039/c8dt01090k] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The efficient catalysis of oxidative alkylation and fluoroalkylation of aromatic C-H bonds is of paramount importance in the pharmaceutical and agrochemical industries, and requires the development of convenient Ag0-based nano-architectures with high catalytic activity and recyclability. We prepared Ag-doped silica nanoparticles (Ag0/+@SiO2) with a specific nano-architecture, where ultra-small sized silver cores are immersed in silica spheres, 40 nm in size. The nano-architecture provides an efficient electrochemical oxidation of Ag+@SiO2 without any external oxidant. In turn, Ag+@SiO2 5 mol% results in 100% conversion of arenes into their alkylated and fluoroalkylated derivatives in a single step at room temperature under nanoheterogeneous electrochemical conditions. Negligible oxidative leaching of silver from Ag0/+@SiO2 is recorded during the catalytic coupling of arenes with acetic, difluoroacetic and trifluoroacetic acids, which enables the good recyclability of the catalytic function of the Ag0/+@SiO2 nanostructure. The catalyst can be easily separated from the reaction mixture and reused a minimum of five times upon electrochemical regeneration. The use of the developed Ag0@SiO2 nano-architecture as a heterogeneous catalyst facilitates aromatic C-H bond substitution by alkyl and fluoroalkyl groups, which are privileged structural motifs in pharmaceuticals and agrochemicals.
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Affiliation(s)
- Mikhail N Khrizanforov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov str., Kazan 420088, Russian Federation.
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262
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Revil-Baudard VL, Vors JP, Zard SZ. Xanthate-Mediated Incorporation of Quaternary Centers into Heteroarenes. Org Lett 2018; 20:3531-3535. [PMID: 29856227 DOI: 10.1021/acs.orglett.8b01299] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The xanthate-mediated addition of tertiary alkyl radicals to heteroarenes enabled the easy functionalization of heteroaromatic rings as well as more decorated structures, such as marketed drugs or agrochemicals. This work provides a synthetic tool for efficiently exploring the chemical space by allowing late-stage diversification with a high tolerance toward functional groups.
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Affiliation(s)
- Vincent L Revil-Baudard
- Laboratoire de Synthèse Organique , CNRS UMR 7652 Ecole Polytechnique , Palaiseau 91128 Cedex , France
| | - Jean-Pierre Vors
- Bayer S.A.S, Small Molecule Research - Disease Control Chemistry , 14 Impasse Pierre Baizet , Lyon 69263 Cedex , France
| | - Samir Z Zard
- Laboratoire de Synthèse Organique , CNRS UMR 7652 Ecole Polytechnique , Palaiseau 91128 Cedex , France
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263
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Zhang L, Zhang G, Li Y, Wang S, Lei A. The synergistic effect of self-assembly and visible-light induced the oxidative C-H acylation of N-heterocyclic aromatic compounds with aldehydes. Chem Commun (Camb) 2018; 54:5744-5747. [PMID: 29780998 DOI: 10.1039/c8cc02342e] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Constructing carbon-carbon bonds through oxidative cross-coupling between two hydrocarbon compounds is regarded as a foundational issue in green chemistry. High atom-economy and mild conditions are long term pursued goals in this field. Herein, we developed a visible-light mediated direct cross-coupling between N-heterocycles and aldehydes without the requirement of a photocatalyst. Several N-heterocycles afforded the acylation products with aromatic or aliphatic aldehydes in good yields. The reaction can be conducted under room temperature and easily scaled up.
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Affiliation(s)
- Lingling Zhang
- College of Chemistry and Molecular Sciences, The Institute for Advanced Studies, Wuhan University, Wuhan, Hubei 430072, People's Republic of China.
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264
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Mahajan B, Aand D, Singh AK. Synthesis of Bi(hetero)aryls via Sequential Oxidation and Decarboxylation of Benzylamines in a Batch/Fully Automated Continuous Flow Process. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800223] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bhushan Mahajan
- Division of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; -500007 Hyderabad India
| | - Dnyaneshwar Aand
- Division of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; -500007 Hyderabad India
| | - Ajay K. Singh
- Division of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; -500007 Hyderabad India
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265
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Sakamoto R, Nguyen BN, Maruoka K. Transition-Metal-Free Direct C−H Silylation of Electron-Deficient Heteroarenes with Hydrosilanes via a Radical Mechanism. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800282] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ryu Sakamoto
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo Kyoto 606-8502 Japan
| | - Bich-Ngoc Nguyen
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo Kyoto 606-8502 Japan
| | - Keiji Maruoka
- Department of Chemistry; Graduate School of Science; Kyoto University; Sakyo Kyoto 606-8502 Japan
- School of Chemical Engineering and Light Industry; Guangdong University of Technology; No.100, West Waihuan Road, HEMC, 4 Panyu District Guangzhou 510006 China
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266
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Li Y, Lai M, Wu Z, Zhao M, Zhang M. Synthesis of 2-Acyl-Substituted Pyrazine Derivatives through Silver-Catalyzed Decarboxylative Coupling Reactions. ChemistrySelect 2018. [DOI: 10.1002/slct.201800496] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yuan Li
- College of Tobacco Science; Flavors and Fragrance Engineering & Technology Research Center of Henan Province; Henan Agricultural University; Zhengzhou 450002 P.R. China
| | - Miao Lai
- College of Tobacco Science; Flavors and Fragrance Engineering & Technology Research Center of Henan Province; Henan Agricultural University; Zhengzhou 450002 P.R. China
| | - Zhiyong Wu
- College of Tobacco Science; Flavors and Fragrance Engineering & Technology Research Center of Henan Province; Henan Agricultural University; Zhengzhou 450002 P.R. China
| | - Mingqin Zhao
- College of Tobacco Science; Flavors and Fragrance Engineering & Technology Research Center of Henan Province; Henan Agricultural University; Zhengzhou 450002 P.R. China
| | - Mingyue Zhang
- College of Tobacco Science; Flavors and Fragrance Engineering & Technology Research Center of Henan Province; Henan Agricultural University; Zhengzhou 450002 P.R. China
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267
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Sun Q, Zhang YY, Sun J, Han Y, Jia X, Yan CG. Copper-Catalyzed Selective 1,2-Dialkylation of N-Heteroarenes via a Radical Addition/Reduction Process: Application for the Construction of Alkylated Dihydroazaarenes Derivatives. J Org Chem 2018; 83:6640-6649. [DOI: 10.1021/acs.joc.8b00928] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Qiu Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Yuan-Yuan Zhang
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Jing Sun
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Ying Han
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Xiaodong Jia
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
| | - Chao-Guo Yan
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China
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268
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Singh AK, Kim MG, Lee HJ, Singh R, Cho SH, Kim DP. Direct Aryl-Aryl Coupling without Pre-Functionalization Enabled by Excessive Oxidation of Two-Electron Ag(I)/Ag(III) Catalyst. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800213] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ajay K. Singh
- Center for Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, POSTECH; Pohang University of Science and Technology); Pohang 376-73 Korea
- Division of Organic Synthesis and Process Chemistry; CSIR-Indian Institute of Chemical Technology; Hyderabad India
| | - Min-Gyu Kim
- Beamline Research Division, Pohang Accelerator Laboratory (PAL), POSTECH; Pohang University of Science and Technology); Pohang 376-73 Korea
| | - Hyune-Jea Lee
- Center for Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, POSTECH; Pohang University of Science and Technology); Pohang 376-73 Korea
| | - Rakhi Singh
- Center for Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, POSTECH; Pohang University of Science and Technology); Pohang 376-73 Korea
| | - Seung Hwan Cho
- Department of Chemistry, POSTECH; Pohang University of Science and Technology); Pohang 376-73 Korea
| | - Dong-Pyo Kim
- Center for Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, POSTECH; Pohang University of Science and Technology); Pohang 376-73 Korea
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269
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Genovino J, Lian Y, Zhang Y, Hope TO, Juneau A, Gagné Y, Ingle G, Frenette M. Metal-Free-Visible Light C–H Alkylation of Heteroaromatics via Hypervalent Iodine-Promoted Decarboxylation. Org Lett 2018; 20:3229-3232. [DOI: 10.1021/acs.orglett.8b01085] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Julien Genovino
- Pfizer Worldwide Medicinal Chemistry, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Yajing Lian
- Pfizer Worldwide Medicinal Chemistry, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Yuan Zhang
- Pfizer Worldwide Medicinal Chemistry, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Taylor O. Hope
- Département de Chimie, Université du Québec à Montréal, Case Postale 8888, Succursale Centre-Ville, Montréal, Québec, H3C 3P8, Canada
| | - Antoine Juneau
- Département de Chimie, Université du Québec à Montréal, Case Postale 8888, Succursale Centre-Ville, Montréal, Québec, H3C 3P8, Canada
| | - Yohann Gagné
- Département de Chimie, Université du Québec à Montréal, Case Postale 8888, Succursale Centre-Ville, Montréal, Québec, H3C 3P8, Canada
| | - Gajendra Ingle
- Pfizer Worldwide Medicinal Chemistry, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Mathieu Frenette
- Département de Chimie, Université du Québec à Montréal, Case Postale 8888, Succursale Centre-Ville, Montréal, Québec, H3C 3P8, Canada
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270
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Wang J, Li GX, He G, Chen G. Photoredox-Mediated Minisci Alkylation of N-Heteroarenes using Carboxylic Acids and Hypervalent Iodine. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800197] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Junhua Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of chemistry; Nankai University; Tianjin 300071 China
| | - Guo-Xing Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of chemistry; Nankai University; Tianjin 300071 China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of chemistry; Nankai University; Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry; College of chemistry; Nankai University; Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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271
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Kuttruff CA, Haile M, Kraml J, Tautermann CS. Late-Stage Functionalization of Drug-Like Molecules Using Diversinates. ChemMedChem 2018. [PMID: 29534329 DOI: 10.1002/cmdc.201800151] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Late-stage functionalization (LSF) is a powerful method to quickly generate new analogues of a lead structure without resorting to de novo synthesis. We have leveraged Baran Diversinates to carry out late-stage functionalizations on lead structures from internal drug discovery projects and accurately predicted regioselectivities using computational methods. Our functionalization successfully afforded specific regioisomers which were in line with our predictions. To enhance reactivity, decrease reaction time, and increase reaction yields, we have developed new functionalization conditions involving iron(III) catalysis. Finally, we demonstrate how our LSF reactions using Baran Diversinates can lead to new analogues with improved in vitro DMPK parameters.
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Affiliation(s)
- Christian A Kuttruff
- Department for Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co KG, Birkendorfer Straße 65, 88397, Biberach an der Riss, Germany
| | - Margit Haile
- Department for Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co KG, Birkendorfer Straße 65, 88397, Biberach an der Riss, Germany
| | - Johannes Kraml
- Department for Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co KG, Birkendorfer Straße 65, 88397, Biberach an der Riss, Germany
| | - Christofer S Tautermann
- Department for Medicinal Chemistry, Boehringer Ingelheim Pharma GmbH & Co KG, Birkendorfer Straße 65, 88397, Biberach an der Riss, Germany
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272
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Mandal S, Bera T, Dubey G, Saha J, Laha JK. Uses of K2S2O8 in Metal-Catalyzed and Metal-Free Oxidative Transformations. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00743] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sudip Mandal
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Tishyasoumya Bera
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Gurudutt Dubey
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Jaideep Saha
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Joydev K. Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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273
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Mahajan PS, Mhaske SB. Silver-Mediated Oxidative Decarboxylative Intramolecular Asymmetric Radical Cyclization (C sp3-C sp2) via Memory of Chirality: Access to Circumdatin Alkaloids. Org Lett 2018; 20:2092-2095. [PMID: 29578718 DOI: 10.1021/acs.orglett.8b00652] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A novel silver-mediated oxidative decarboxylative intramolecular asymmetric radical cyclization has been developed to form a Csp3-Csp2 bond via memory of chirality. The application of the process has been demonstrated for the synthesis of the circumdatin class of alkaloids in high enantiopurity with retention of the configuration. The developed protocol is mild and works with an inexpensive silver catalyst in the absence of ligand, base, or additives. The involvement of a monoradical in the reaction has been established by trapping the radical intermediate.
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274
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Proctor RSJ, Davis HJ, Phipps RJ. Catalytic enantioselective Minisci-type addition to heteroarenes. Science 2018; 360:419-422. [DOI: 10.1126/science.aar6376] [Citation(s) in RCA: 288] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 02/28/2018] [Indexed: 12/31/2022]
Abstract
Basic heteroarenes are a ubiquitous feature of pharmaceuticals and bioactive molecules, and Minisci-type additions of radical nucleophiles are a leading method for their elaboration. Despite many Minisci-type protocols that result in the formation of stereocenters, exerting control over the absolute stereochemistry at these centers remains an unmet challenge. We report a process for addition of prochiral radicals, generated from amino acid derivatives, to pyridines and quinolines. Our method offers excellent control of both enantioselectivity and regioselectivity. An enantiopure chiral Brønsted acid catalyst serves both to activate the substrate and induce asymmetry, while an iridium photocatalyst mediates the required electron transfer processes. We anticipate that this method will expedite access to enantioenriched small-molecule building blocks bearing versatile basic heterocycles.
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Affiliation(s)
| | - Holly J. Davis
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Robert J. Phipps
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
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275
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Kammer LM, Rahman A, Opatz T. A Visible Light-Driven Minisci-Type Reaction with N-Hydroxyphthalimide Esters. Molecules 2018; 23:molecules23040764. [PMID: 29584642 PMCID: PMC6017455 DOI: 10.3390/molecules23040764] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/21/2022] Open
Abstract
A visible light-promoted protocol for the redox-neutral coupling of N-hydroxyphthalimide esters with different N-heterocyclic compounds is described. The reaction proceeds through an alkyl radical intermediate generated by reductive decarboxylation of N-hydroxyphthalimide esters. In contrast to the original Minisci protocol, polyalkylation can largely be avoided. Mechanistic investigations revealed a radical chain mechanism which in some cases can proceed even if no photocatalyst is added. This valuable and functional group-tolerant reaction produces substituted heterocycles in moderate to excellent yield. The use of inexpensive starting materials and LEDs as the light source are key features of this C–C bond formation.
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Affiliation(s)
- Lisa Marie Kammer
- Institute of Organic Chemistry, Johannes Gutenberg-University, 55128 Mainz, Germany.
| | - Aliyaah Rahman
- Institute of Organic Chemistry, Johannes Gutenberg-University, 55128 Mainz, Germany.
| | - Till Opatz
- Institute of Organic Chemistry, Johannes Gutenberg-University, 55128 Mainz, Germany.
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276
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Zhou W, Miura T, Murakami M. Photocatalyzed ortho-Alkylation of Pyridine N-Oxides through Alkene Cleavage. Angew Chem Int Ed Engl 2018; 57:5139-5142. [PMID: 29508912 DOI: 10.1002/anie.201801305] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 02/23/2018] [Indexed: 11/09/2022]
Abstract
A photocatalyzed reaction of pyridine N-oxides with alkenes gives ortho-alkylated pyridines with cleavage of the carbon-carbon double bond. Benzyl and secondary alkyl groups are incorporated at the ortho position of pyridines in one pot.
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Affiliation(s)
- Wang Zhou
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
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277
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Zhou W, Miura T, Murakami M. Photocatalyzed
ortho
‐Alkylation of Pyridine
N
‐Oxides through Alkene Cleavage. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801305] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wang Zhou
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
| | - Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry Kyoto University Katsura Kyoto 615-8510 Japan
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278
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Quattrini MC, Fujii S, Yamada K, Fukuyama T, Ravelli D, Fagnoni M, Ryu I. Versatile cross-dehydrogenative coupling of heteroaromatics and hydrogen donors via decatungstate photocatalysis. Chem Commun (Camb) 2018; 53:2335-2338. [PMID: 28164184 DOI: 10.1039/c6cc09725a] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A facile sunlight-induced derivatization of heteroaromatics via photocatalyzed C-H functionalization in amides, ethers, alkanes and aldehydes is described. Tetrabutylammonium decatungstate (TBADT) was used as the photocatalyst and allowed to carry out the process under mild conditions.
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Affiliation(s)
- Matteo C Quattrini
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Saki Fujii
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
| | - Keiichi Yamada
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
| | - Takahide Fukuyama
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan.
| | - Davide Ravelli
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Maurizio Fagnoni
- PhotoGreen Lab, Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100 Pavia, Italy.
| | - Ilhyong Ryu
- Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan. and Department of Applied Chemistry, National Chiao Tung University, Hsinchu, Taiwan
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279
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Guo Z, Li M, Mou XQ, He G, Xue XS, Chen G. Radical C–H Arylation of Oxazoles with Aryl Iodides: dppf as an Electron-Transfer Mediator for Cs2CO3. Org Lett 2018; 20:1684-1687. [DOI: 10.1021/acs.orglett.8b00530] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhengwei Guo
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Man Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xue-Qing Mou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gang He
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
| | - Xiao-Song Xue
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Gong Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, China
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280
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Affiliation(s)
- Sandip Murarka
- Department of Chemistry; Indian Institute of Technology Jodhpur; NH-65 Nagaur Road, Karwar - 342037 Jodhpur District, Rajasthan India
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281
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Sherwood TC, Li N, Yazdani AN, Dhar TGM. Organocatalyzed, Visible-Light Photoredox-Mediated, One-Pot Minisci Reaction Using Carboxylic Acids via N-(Acyloxy)phthalimides. J Org Chem 2018; 83:3000-3012. [PMID: 29420898 DOI: 10.1021/acs.joc.8b00205] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An improved, one-pot Minisci reaction has been developed using visible light, an organic photocatalyst, and carboxylic acids as radical precursors via the intermediacy of in situ-generated N-(acyloxy)phthalimides. The conditions employed are mild, demonstrate a high degree of functional group tolerance, and do not require a large excess of the carboxylic acid reactant. As a result, this reaction can be applied to drug-like scaffolds and molecules with sensitive functional groups, enabling late-stage functionalization, which is of high interest to medicinal chemistry.
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Affiliation(s)
- Trevor C Sherwood
- Research and Development, Bristol-Myers Squibb Company , P.O. Box 4000, Princeton, New Jersey 08543-4000 United States
| | - Ning Li
- Research and Development, Bristol-Myers Squibb Company , P.O. Box 4000, Princeton, New Jersey 08543-4000 United States
| | - Aliza N Yazdani
- Research and Development, Bristol-Myers Squibb Company , P.O. Box 4000, Princeton, New Jersey 08543-4000 United States
| | - T G Murali Dhar
- Research and Development, Bristol-Myers Squibb Company , P.O. Box 4000, Princeton, New Jersey 08543-4000 United States
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282
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Huang Q, Zard SZ. Inexpensive Radical Methylation and Related Alkylations of Heteroarenes. Org Lett 2018; 20:1413-1416. [DOI: 10.1021/acs.orglett.8b00190] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Qi Huang
- Laboratoire de Synthèse
Organique, CNRS UMR 7652 Ecole Polytechnique, Palaiseau, 91128 Cedex, France
| | - Samir Z. Zard
- Laboratoire de Synthèse
Organique, CNRS UMR 7652 Ecole Polytechnique, Palaiseau, 91128 Cedex, France
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283
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Sun Q, Zhang YY, Sun J, Han Y, Jia X, Yan CG. Construction of C(sp2)–X (X = Br, Cl) Bonds through a Copper-Catalyzed Atom-Transfer Radical Process: Application for the 1,4-Difunctionalization of Isoquinolinium Salts. Org Lett 2018; 20:987-990. [DOI: 10.1021/acs.orglett.7b03751] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Qiu Sun
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Yuan-Yuan Zhang
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Jing Sun
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Ying Han
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Xiaodong Jia
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Chao-Guo Yan
- School of Chemistry and Chemical
Engineering, Yangzhou University, Yangzhou, 225002, China
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284
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Kanyiva KS, Makino S, Shibata T. Silver-Catalyzed Efficient Synthesis of Oxindoles and Pyrroloindolines via α-Aminoalkylation of N
-Arylacrylamides with Amino Acid Derivatives. Chem Asian J 2018; 13:496-499. [DOI: 10.1002/asia.201701739] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Indexed: 01/10/2023]
Affiliation(s)
- Kyalo Stephen Kanyiva
- Global Center for Science and Engineering, School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
| | - Sohei Makino
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
| | - Takanori Shibata
- Department of Chemistry and Biochemistry, School of Advanced Science and Engineering; Waseda University; Shinjuku Tokyo 169-8555 Japan
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285
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Thirumoorthi NT, Adsool VA. A practical metal-free homolytic aromatic alkylation protocol for the synthesis of 3-(pyrazin-2-yl)bicyclo[1.1.1]pentane-1-carboxylic acid. Org Biomol Chem 2018; 14:9485-9489. [PMID: 27714331 DOI: 10.1039/c6ob01799a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
As a part of our ongoing synthetic quest to expand the frontiers of contemporary medicinal chemistry, we now report an expedient synthesis of a potentially useful bicyclo[1.1.1]pentane building block, 3-(pyrazin-2-yl)bicyclo[1.1.1]pentane-1-carboxylic acid. This report also showcases the application of this motif as a probe in a biological study.
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Affiliation(s)
- Navanita T Thirumoorthi
- Institute of Chemical and Engineering Sciences (ICES), Agency for Science technology and Research (A*STAR), 8 Biomedical Grove, Neuros, #07-01, Singapore 138665, Singapore.
| | - Vikrant A Adsool
- Institute of Chemical and Engineering Sciences (ICES), Agency for Science technology and Research (A*STAR), 8 Biomedical Grove, Neuros, #07-01, Singapore 138665, Singapore.
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286
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Nikolaev A, Legault CY, Zhang M, Orellana A. The Acid-Free Cyclopropanol-Minisci Reaction Reveals the Catalytic Role of Silver–Pyridine Complexes. Org Lett 2018; 20:796-799. [DOI: 10.1021/acs.orglett.7b03938] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Andrei Nikolaev
- Department
of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
| | - Claude Y. Legault
- Department
of Chemistry, University of Sherbrooke, 2500 Boulevard de l’Universite, Sherbrooke, Québec J1K 2R1, Canada
| | - Minhao Zhang
- Department
of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
| | - Arturo Orellana
- Department
of Chemistry, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada
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287
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He Y, Wang X, Xiao JA, Pang J, Gan C, Huang Y, Huang C. Metal-free oxidative isocyanides insertion with aromatic aldehydes to aroylated N-heterocycles. RSC Adv 2018; 8:3036-3040. [PMID: 35541179 PMCID: PMC9077706 DOI: 10.1039/c7ra12755c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Accepted: 01/06/2018] [Indexed: 11/21/2022] Open
Abstract
A metal-free, mild and efficient protocol for the construction of aroylated N-heterocycles via radical cascade aroylation of phenyl or vinyl isocyanides with aromatic aldehydes has been developed. Both phenanthridine and isoquinoline derivatives are delivered quickly in moderate to good yields with high regioselectivity.
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Affiliation(s)
- Yimiao He
- College of Chemistry and Materials Science, Guangxi Teachers Education University Nanning 530001 P. R. China
| | - Xuelian Wang
- College of Chemistry and Materials Science, Guangxi Teachers Education University Nanning 530001 P. R. China
| | - Jun-An Xiao
- College of Chemistry and Materials Science, Guangxi Teachers Education University Nanning 530001 P. R. China
| | - Jinying Pang
- College of Chemistry and Materials Science, Guangxi Teachers Education University Nanning 530001 P. R. China
| | - Chunfang Gan
- College of Chemistry and Materials Science, Guangxi Teachers Education University Nanning 530001 P. R. China
| | - Yanmin Huang
- College of Chemistry and Materials Science, Guangxi Teachers Education University Nanning 530001 P. R. China
| | - Chusheng Huang
- College of Chemistry and Materials Science, Guangxi Teachers Education University Nanning 530001 P. R. China
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288
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He YT, Won J, Kim J, Park B, Kim T, Baik MH, Hong S. One-pot bifunctionalization of unactivated alkenes, P(O)–H compounds, and N-methoxypyridinium salts for the construction of β-pyridyl alkylphosphonates. Org Chem Front 2018. [DOI: 10.1039/c8qo00689j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
An efficient phosphono-heteroarylation of unactivated alkenes was developed through a one-pot bifunctionalization process to give access to β-pyridylphosphine structural motifs.
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Affiliation(s)
- Yu-Tao He
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 34141
- Korea
| | - Joonghee Won
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 34141
- Korea
- Department of Chemistry
| | - Jiyun Kim
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 34141
- Korea
- Department of Chemistry
| | - Bohyun Park
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 34141
- Korea
- Department of Chemistry
| | - Taehwan Kim
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 34141
- Korea
- Department of Chemistry
| | - Mu-Hyun Baik
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 34141
- Korea
- Department of Chemistry
| | - Sungwoo Hong
- Center for Catalytic Hydrocarbon Functionalizations
- Institute for Basic Science (IBS)
- Daejeon 34141
- Korea
- Department of Chemistry
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289
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Chen R, Yu JT, Cheng J. Metal-free oxidative decarbonylative alkylation of chromones using aliphatic aldehydes. Org Biomol Chem 2018; 16:3568-3571. [DOI: 10.1039/c8ob00720a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A decarbonylative alkylation of chromones via radical conjugate addition under metal-free conditions was developed using aliphatic aldehydes as alkylating reagents.
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Affiliation(s)
- Rongzhen Chen
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Jin-Tao Yu
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- P. R. China
| | - Jiang Cheng
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Changzhou University
- Changzhou 213164
- P. R. China
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290
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Chen R, Yu JT, Cheng J. Site-specific hydroxyalkylation of chromones via alcohol mediated Minisci-type radical conjugate addition. Org Biomol Chem 2018; 16:1823-1827. [DOI: 10.1039/c8ob00392k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The metal-free C2-functionalization of chromones with alcohols and ethers via radical sp3 C–H activation was developed.
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Affiliation(s)
- Rongzhen Chen
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
| | - Jin-Tao Yu
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
| | - Jiang Cheng
- School of Petrochemical Engineering
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology
- Jiangsu Province Key Laboratory of Fine Petrochemical Engineering
- Changzhou University
- Changzhou 213164
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291
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Yao H, Liu Y, Tyagarajan S, Streckfuss E, Reibarkh M, Chen K, Zamora I, Fontaine F, Goracci L, Helmy R, Bateman KP, Krska SW. Enabling Efficient Late-Stage Functionalization of Drug-Like Molecules with LC-MS and Reaction-Driven Data Processing. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701573] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Huifang Yao
- Department of Pharmacokinetics; Pharmacodynamics and Drug Metabolism; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Yong Liu
- Department of Process Research & Development; Merck Sharp & Dohme Corp.; Rahway NJ USA
| | - Sriram Tyagarajan
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Eric Streckfuss
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Mikhail Reibarkh
- Department of Process Research & Development; Merck Sharp & Dohme Corp.; Rahway NJ USA
| | - Kuanchang Chen
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Ismael Zamora
- Lead Molecular Design, S.L.; Sant Cugat Del Valles Spain
| | | | - Laura Goracci
- Department of Chemistry, Biology and Biotechnology; University of Perugia; Perugia Italy
| | - Roy Helmy
- Department of Process Research & Development; Merck Sharp & Dohme Corp.; Rahway NJ USA
| | - Kevin P. Bateman
- Department of Pharmacokinetics; Pharmacodynamics and Drug Metabolism; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
| | - Shane W. Krska
- HTE & Lead Discovery Capabilities; Merck Sharp & Dohme Corp.; Kenilworth NJ USA
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292
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Zhang L, Liu ZQ. Molecular Oxygen-Mediated Minisci-Type Radical Alkylation of Heteroarenes with Boronic Acids. Org Lett 2017; 19:6594-6597. [DOI: 10.1021/acs.orglett.7b03297] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Lizhi Zhang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Zhong-Quan Liu
- State
Key Laboratory Cultivation Base for TCM Quality and Efficacy, College
of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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293
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Liang B, Wang Q, Liu ZQ. A Fe(III)/NaBH4-Promoted Free-Radical Hydroheteroarylation of Alkenes. Org Lett 2017; 19:6463-6465. [DOI: 10.1021/acs.orglett.7b03313] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Bingyu Liang
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Qinglong Wang
- Henan University of Animal Husbandry and Economy, Zhengzhou 450011, China
| | - Zhong-Quan Liu
- State
Key Laboratory Cultivation Base for TCM Quality and Efficacy, College
of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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294
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Ryzhakov D, Jarret M, Guillot R, Kouklovsky C, Vincent G. Radical-Mediated Dearomatization of Indoles with Sulfinate Reagents for the Synthesis of Fluorinated Spirocyclic Indolines. Org Lett 2017; 19:6336-6339. [DOI: 10.1021/acs.orglett.7b03155] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dmytro Ryzhakov
- Institut de Chimie Moléculaire
et des Matériaux d’Orsay (ICMMO), Equipe Méthodologie,
Synthèse et Molécules Thérapeutiques, Univ. Paris
Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clemenceau, 91405 Orsay, Cedex, France
| | - Maxime Jarret
- Institut de Chimie Moléculaire
et des Matériaux d’Orsay (ICMMO), Equipe Méthodologie,
Synthèse et Molécules Thérapeutiques, Univ. Paris
Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clemenceau, 91405 Orsay, Cedex, France
| | - Régis Guillot
- Institut de Chimie Moléculaire
et des Matériaux d’Orsay (ICMMO), Equipe Méthodologie,
Synthèse et Molécules Thérapeutiques, Univ. Paris
Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clemenceau, 91405 Orsay, Cedex, France
| | - Cyrille Kouklovsky
- Institut de Chimie Moléculaire
et des Matériaux d’Orsay (ICMMO), Equipe Méthodologie,
Synthèse et Molécules Thérapeutiques, Univ. Paris
Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clemenceau, 91405 Orsay, Cedex, France
| | - Guillaume Vincent
- Institut de Chimie Moléculaire
et des Matériaux d’Orsay (ICMMO), Equipe Méthodologie,
Synthèse et Molécules Thérapeutiques, Univ. Paris
Sud, CNRS, Université Paris-Saclay, 15, rue Georges Clemenceau, 91405 Orsay, Cedex, France
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295
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Zhou L, Okugawa N, Togo H. Hydroxymethylation of Quinolines with Na2
S2
O8
by a Radical Pathway. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701321] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Luan Zhou
- Graduate School of Science; Chiba University; Yayoi-cho 1-33 263-8522 Inage-ku Chiba Japan
| | - Naoki Okugawa
- Graduate School of Science; Chiba University; Yayoi-cho 1-33 263-8522 Inage-ku Chiba Japan
| | - Hideo Togo
- Graduate School of Science; Chiba University; Yayoi-cho 1-33 263-8522 Inage-ku Chiba Japan
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296
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McCallum T, Pitre SP, Morin M, Scaiano JC, Barriault L. The photochemical alkylation and reduction of heteroarenes. Chem Sci 2017; 8:7412-7418. [PMID: 29163892 PMCID: PMC5674141 DOI: 10.1039/c7sc03768f] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 09/09/2017] [Indexed: 01/14/2023] Open
Abstract
The functionalization of heteroarenes has been integral to the structural diversification of medicinally active molecules such as quinolines, pyridines, and phenanthridines. Electron-deficient heteroarenes are electronically compatible to react with relatively nucleophilic free radicals such as hydroxyalkyl. However, the radical functionalization of such heteroarenes has been marked by the use of transition-metal catalyzed processes that require initiators and stoichiometric oxidants. Herein, we describe the photochemical alkylation of quinolines, pyridines and phenanthridines, where through direct excitation of the protonated heterocycle, alcohols and ethers, such as methanol and THF, can serve as alkylating agents. We also report the discovery of a photochemical reduction of these heteroarenes using only iPrOH and HCl. Mechanistic studies to elucidate the underlying mechanism of these transformations, and preliminary results on catalytic methylations are also reported.
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Affiliation(s)
- T McCallum
- Centre for Catalysis , Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , ON K1N 6N5 , Canada . ;
| | - S P Pitre
- Centre for Catalysis , Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , ON K1N 6N5 , Canada . ;
| | - M Morin
- Centre for Catalysis , Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , ON K1N 6N5 , Canada . ;
| | - J C Scaiano
- Centre for Catalysis , Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , ON K1N 6N5 , Canada . ;
| | - L Barriault
- Centre for Catalysis , Research and Innovation , Department of Chemistry and Biomolecular Sciences , University of Ottawa , 10 Marie Curie , Ottawa , ON K1N 6N5 , Canada . ;
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297
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Ociepa M, Baka O, Narodowiec J, Gryko D. Light‐Driven Vitamin B
12
‐Catalysed Generation of Acyl Radicals from 2‐
S
‐Pyridyl Thioesters. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700913] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Michał Ociepa
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Oskar Baka
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
- Warsaw University of Technology Faculty of Chemistry Noakowskiego 3 00-664 Warsaw Poland
| | - Jakub Narodowiec
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Dorota Gryko
- Institute of Organic Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
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298
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Galloway JD, Mai DN, Baxter RD. Silver-Catalyzed Minisci Reactions Using Selectfluor as a Mild Oxidant. Org Lett 2017; 19:5772-5775. [DOI: 10.1021/acs.orglett.7b02706] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jordan D. Galloway
- Department of Chemistry,
Chemical Biology, University of California, 5200 North Lake Road, Merced, California 95343, United States
| | - Duy N. Mai
- Department of Chemistry,
Chemical Biology, University of California, 5200 North Lake Road, Merced, California 95343, United States
| | - Ryan D. Baxter
- Department of Chemistry,
Chemical Biology, University of California, 5200 North Lake Road, Merced, California 95343, United States
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299
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Tung TT, Christensen SB, Nielsen J. Difluoroacetic Acid as a New Reagent for Direct C−H Difluoromethylation of Heteroaromatic Compounds. Chemistry 2017; 23:18125-18128. [DOI: 10.1002/chem.201704261] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Indexed: 12/28/2022]
Affiliation(s)
- Truong Thanh Tung
- Department of Drug Design and Pharmacology; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
| | - Søren Brøgger Christensen
- Department of Drug Design and Pharmacology; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
| | - John Nielsen
- Department of Drug Design and Pharmacology; University of Copenhagen; Universitetsparken 2 2100 Copenhagen Denmark
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300
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Plesniak MP, Huang HM, Procter DJ. Radical cascade reactions triggered by single electron transfer. Nat Rev Chem 2017. [DOI: 10.1038/s41570-017-0077] [Citation(s) in RCA: 169] [Impact Index Per Article: 24.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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