1
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Shen Y, Zhang Y, Zhang C, Li H, Hu C, Yu Z, Zheng K, Su Z. Elucidating Mechanism and Selectivity in Pyridine Functionalization Through Silylium Catalysis. Chemistry 2024:e202402078. [PMID: 38976314 DOI: 10.1002/chem.202402078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 07/05/2024] [Accepted: 07/08/2024] [Indexed: 07/09/2024]
Abstract
The functionalization of aromatic N-heterocycles through silylium activation demonstrates exceptional selectivity and efficiency. Density functional theory (DFT) calculations unveil the detailed silylium catalysis mechanism and elucidate the origins of selectivity in this reaction. The phosphoramidimidate sulfonamide (PADI) precatalyst orchestrates of the catalytic cycle via three elementary steps. The Brønsted acidity of precatalyst significantly influences both the formation of silylium-based Lewis acid active species and the silylium activation of pyridine. Unlike disulfonimide (DSI)-type precatalysts, both Tf2NH and PADI precatalysts with strong acidities can easily promote the generation of activated silylium pyridine species. A semi-enclosed 'rigid' electronegative cavity in PADI-type anions constructs a well-defined recognition site, facilitating engagement with the positively charged silylium pyridine species. Due to the high electrophilicity and less steric demand at the C4-position of the pyridine substrate, the product with C4-regioselectivity was predominantly generated.
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Affiliation(s)
- Yanling Shen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yan Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Cefei Zhang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Haoze Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Zhipeng Yu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Ke Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
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2
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Youn T, Kim T, Han S. Total synthesis of (-)-securingine G. Chem Commun (Camb) 2024; 60:6391-6394. [PMID: 38828749 DOI: 10.1039/d4cc01075b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
In this study, we present the first total synthesis of (-)-securingine G. Diverging from the proposed biosynthetic pathway, our approach involves the addition of nucleophilic pyridine anion species to the electrophilic menisdaurilide congener. Crucially, incorporating a weakly basic yet nucleophilic tri(2-pyridinyl)lanthanum complex proved essential to circumvent undesired base-mediated pathways during the key coupling reaction. Notably, we introduce n-Bu3La·5LiCl as a new exchange reagent, facilitating efficient halide/lanthanum exchange of (hetero)aryl halides.
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Affiliation(s)
- Taesik Youn
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Taewan Kim
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea.
| | - Sunkyu Han
- Department of Chemistry, Korea Advanced Institute of Science & Technology (KAIST), Daejeon 34141, Republic of Korea.
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3
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Lakshman MK. Base Modifications of Nucleosides via the Use of Peptide-Coupling Agents, and Beyond. CHEM REC 2023; 23:e202200182. [PMID: 36166699 DOI: 10.1002/tcr.202200182] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 08/26/2022] [Indexed: 01/24/2023]
Abstract
Several naturally occurring purine and pyrimidine nucleosides contain an amide linkage as part of the heterocyclic aglycone. Enolization of the amide and conversion to leaving groups at the amide carbon atom permits base modification by addition-elimination types of processes. Although a number of methods have been developed over the years for accomplishing such conversions, the present Personal Account describes efforts from the Lakshman laboratories. Facile activation of the amido groups in nucleobases can be achieved with peptide-coupling agents. Subsequent reaction with nucleophiles then accomplishes the base modifications. In many cases, the activation and displacement steps can be done as two-step, one-pot processes, whereas in other cases, discrete storable activated nucleosides can be isolated for subsequent displacement reactions. Using such an approach a wide range of nucleoside base modifications is readily achievable. In many instances, mechanistic investigations have been conducted so as to understand the activation process.
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Affiliation(s)
- Mahesh K Lakshman
- Department of Chemistry and Biochemistry, The City College of New York, 160 Convent Avenue, New York, NY 10031, USA.,The Ph.D. Program in Chemistry, The Graduate Center of the City University of New York, 365 Fifth Avenue, New York, NY 10016, USA
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4
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Johnson TC, Marsden SP. Three-Component Synthesis of Pyridylacetic Acid Derivatives by Arylation/Decarboxylative Substitution of Meldrum's Acids. J Org Chem 2022; 87:13891-13894. [PMID: 36257810 PMCID: PMC9638998 DOI: 10.1021/acs.joc.2c01597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A convenient and simple three-component synthesis of substituted pyridylacetic acid derivatives is reported. The approach centers on the dual reactivity of Meldrum's acid derivatives, initially as nucleophiles to perform substitution on activated pyridine-N-oxides, then as electrophiles with a range of nucleophiles to trigger ring-opening and decarboxylation.
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5
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Anugu N, Thunga S, Golla S, Kokatla HP. Iodine Catalyzed C2‐H Formamidation of Quinoline
N
‐Oxides using Isocyanides: A Metal‐Free Approach. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202100883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Naveenkumar Anugu
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
| | - Sanjeeva Thunga
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
| | - Sivaparwathi Golla
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
| | - Hari Prasad Kokatla
- Department of Chemistry National Institute of Technology Warangal Warangal Telangana 506004 India
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6
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Andresini M, Tota A, Degennaro L, Bull JA, Luisi R. Synthesis and Transformations of NH-Sulfoximines. Chemistry 2021; 27:17293-17321. [PMID: 34519376 PMCID: PMC9291533 DOI: 10.1002/chem.202102619] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Indexed: 11/17/2022]
Abstract
Recent years have seen a marked increase in the occurrence of sulfoximines in the chemical sciences, often presented as valuable motifs for medicinal chemistry. This has been prompted by both pioneering works taking sulfoximine containing compounds into clinical trials and the concurrent development of powerful synthetic methods. This review covers recent developments in the synthesis of sulfoximines concentrating on developments since 2015. This includes extensive developments in both S-N and S-C bond formations. Flow chemistry processes for sulfoximine synthesis are also covered. Finally, subsequent transformations of sulfoximines, particularly in N-functionalization are reviewed, including N-S, N-P, N-C bond forming processes and cyclization reactions.
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Affiliation(s)
- Michael Andresini
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - Arianna Tota
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - Leonardo Degennaro
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
| | - James A. Bull
- Department of Chemistry Imperial College LondonMolecular Sciences Research Hub White City Campus, Wood LaneLondonW12 0BZUK
| | - Renzo Luisi
- Department of Pharmacy-Drug SciencesUniversity of Bari “A. Moro”Via E. Orabona 470125BariItaly
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7
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Abstract
![]()
Practical, efficient,
and general methods for the diversification
of N-heterocycles have been a recurrent goal in chemical
synthesis due to the ubiquitous influence of these motifs within bioactive
frameworks. Here, we describe a direct, catalytic, and selective functionalization
of azines via silylium activation. Our catalyst design enables mild
conditions and a remarkable functional group tolerance in a one-pot
setup.
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Affiliation(s)
- Carla Obradors
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr, 45470, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, Mülheim an der Ruhr, 45470, Germany
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8
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An JH, Kim KD, Lee JH. Highly Chemoselective Deoxygenation of N-Heterocyclic N-Oxides Using Hantzsch Esters as Mild Reducing Agents. J Org Chem 2021; 86:2876-2894. [DOI: 10.1021/acs.joc.0c02805] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ju Hyeon An
- Department of Advanced Materials Chemistry, Dongguk University, Gyeongju Campus, Gyeongju 38066, Republic of Korea
| | - Kyu Dong Kim
- Department of Advanced Materials Chemistry, Dongguk University, Gyeongju Campus, Gyeongju 38066, Republic of Korea
| | - Jun Hee Lee
- Department of Advanced Materials Chemistry, Dongguk University, Gyeongju Campus, Gyeongju 38066, Republic of Korea
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9
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Recent Advances in the Synthesis of C2‐Functionalized Pyridines and Quinolines Using
N
‐Oxide Chemistry. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000910] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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10
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Wang D, Huang M, Li G, Zheng S, Yu P. Scalable synthesis of a tetrasubstituted 7-azabenzofuran as a key intermediate for a class of potent HCV NS5B inhibitors. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Fu C, Li G, Shen M, Zhang L, Yu P, Wang D. Facile and Efficient Synthesis of Tri‐ and Tetrasubstituted 7‐Azabenzofuran Derivatives. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Chunsheng Fu
- Shanxi Biological Institute Co. Ltd No. 50, Shifan Street, Xiaodian District Taiyuan Shanxi 030006 China
| | - Gaoyu Li
- College of BiotechnologyTianjin University of Science and Technology No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Meng Shen
- College of BiotechnologyTianjin University of Science and Technology No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Longxia Zhang
- Shanxi Biological Institute Co. Ltd No. 50, Shifan Street, Xiaodian District Taiyuan Shanxi 030006 China
| | - Peng Yu
- College of BiotechnologyTianjin University of Science and Technology No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Dong Wang
- College of BiotechnologyTianjin University of Science and Technology No. 29, 13th Avenue, TEDA Tianjin 300457 China
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12
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Trofimov BA, Volkov PA, Telezhkin AA, Khrapova KO, Ivanova NI, Albanov AI, Gusarova NK. Catalyst-Free Double CH-Functionalization of Quinolines with Phosphine Oxides via Two S NHAr Reaction Sequences. J Org Chem 2020; 85:4927-4936. [PMID: 32162918 DOI: 10.1021/acs.joc.0c00084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Quinolines undergo catalyst-free double CH-functionalization upon treatment with secondary phosphine oxides (70-75 °C, 20-48 h) followed by oxidation of the intermediate 2,4-bisphosphoryltetrahydroquinolines with chloranil. The yields of the target 2,4-bisphosphorylated quinolines are up to 77%. Thus, a double-SNHAr reaction sequence in the same molecule of quinoline has been realized. In the case of 2,4-bisphenylphosphoryltetrahydroquinolines, the aromatization occurs with elimination of one molecule of diphenylphosphine oxide to afford the products of monofunctionalization, 4-diphenylphosphorylquinolines, in 40-45% yields.
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Affiliation(s)
- Boris A Trofimov
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
| | - Pavel A Volkov
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
| | - Anton A Telezhkin
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
| | - Kseniya O Khrapova
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
| | - Nina I Ivanova
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
| | - Alexander I Albanov
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
| | - Nina K Gusarova
- A.E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
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13
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Arupula SK, Qureshi AA, Swamy KCK. Lewis Base-Switched [3 + 3] and [4 + 2] Annulation Reactions of δ-Acetoxy Allenoates with Cyclic N-Sulfonyl Imines: Divergent Synthesis of Functionalized α-Pyridyl Acetates and Teraryl Scaffolds. J Org Chem 2020; 85:4130-4144. [DOI: 10.1021/acs.joc.9b03281] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sanjeeva K. Arupula
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - Asif Ali Qureshi
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
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14
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Kong D, Moon PJ, Bsharat O, Lundgren RJ. Direct Catalytic Decarboxylative Amination of Aryl Acetic Acids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912518] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Duanyang Kong
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Patrick J. Moon
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Odey Bsharat
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Rylan J. Lundgren
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
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15
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Kong D, Moon PJ, Bsharat O, Lundgren RJ. Direct Catalytic Decarboxylative Amination of Aryl Acetic Acids. Angew Chem Int Ed Engl 2019; 59:1313-1319. [DOI: 10.1002/anie.201912518] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/23/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Duanyang Kong
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Patrick J. Moon
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Odey Bsharat
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
| | - Rylan J. Lundgren
- Department of Chemistry University of Alberta Edmonton Alberta T6G 2G2 Canada
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16
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Zhang Y, Zhang S, Xu G, Li M, Tang C, Fan W. Cu-Catalyzed carbamoylation versus amination of quinoline N-oxide with formamides. Org Biomol Chem 2019; 17:309-314. [DOI: 10.1039/c8ob02844c] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Carbamoylation and amination of quinoline with formamides was developed via copper-catalyzed C–C and C–N bond formations.
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Affiliation(s)
- Yan Zhang
- School of Pharmaceutical Science
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Shiwei Zhang
- School of Pharmaceutical Science
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Guangxing Xu
- School of Pharmaceutical Science
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Min Li
- School of Pharmaceutical Science
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Chunlei Tang
- School of Pharmaceutical Science
- Jiangnan University
- Wuxi 214122
- P. R. China
| | - Weizheng Fan
- School of Pharmaceutical Science
- Jiangnan University
- Wuxi 214122
- P. R. China
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17
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Qi H, Li X, Liu Z, Miao SS, Fang Z, Chen L, Fang Z, Guo K. Regioselective Chlorination of Quinoline Derivatives via Fluorine Mediation in a Microfluidic Reactor. ChemistrySelect 2018. [DOI: 10.1002/slct.201802925] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Hao Qi
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
| | - Xin Li
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
| | - Zhuang Liu
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
| | - Shan-Shan Miao
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
| | - Lin Chen
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering; Nanjing Tech University; Nanjing 211816 China
- State Key Laboratory of Materials-Oriented Chemical Engineering; Nanjing Tech University; Nanjing 211816 China
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18
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Xie L, Peng S, Liu F, Yi J, Wang M, Tang Z, Xu X, He W. Metal‐free Deoxygenative 2‐Amidation of Quinoline
N
‐oxides with Nitriles via a Radical Activation Pathway. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800918] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Long‐Yong Xie
- Hunan Provincial Engineering Research Center for Ginkgo bilobaHunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Sha Peng
- Hunan Provincial Engineering Research Center for Ginkgo bilobaHunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Fang Liu
- Hunan Provincial Engineering Research Center for Ginkgo bilobaHunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Jin‐Yu Yi
- Hunan Provincial Engineering Research Center for Ginkgo bilobaHunan University of Science and Engineering Yongzhou 425100 People's Republic of China
| | - Ming Wang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of EducationHunan University of Science and Technology Xiangtan 411201 People's Republic of China
| | - Zilong Tang
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of EducationHunan University of Science and Technology Xiangtan 411201 People's Republic of China
| | - Xinhua Xu
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University, Changsha 410082, People's Republic of China
| | - Wei‐Min He
- Hunan Provincial Engineering Research Center for Ginkgo bilobaHunan University of Science and Engineering Yongzhou 425100 People's Republic of China
- State Key Laboratory of Chemo/Biosensing and ChemometricsHunan University, Changsha 410082, People's Republic of China
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19
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Zhang D, Qiao K, Yuan X, Zheng M, Fang Z, Wan L, Guo K. Dehydrogenative etherification homocoupling of heterocyclic N-oxides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Liman M, Türkmen YE. Development of one-pot benzylic amination reactions of azine N-oxides. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.062] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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21
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Bertuzzi G, Pecorari D, Bernardi L, Fochi M. An organocatalytic enantioselective direct α-heteroarylation of aldehydes with isoquinoline N-oxides. Chem Commun (Camb) 2018; 54:3977-3980. [PMID: 29610810 DOI: 10.1039/c8cc01735b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A new protocol for the enantioselective direct α-heteroarylation of aldehydes with isoquinoline N-oxides, via chiral enamine catalysis, has been successfully developed. High enantiomeric excesses and moderate to good yields were achieved for a variety of α-heteroarylated aldehydes.
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Affiliation(s)
- Giulio Bertuzzi
- Department of Industrial Chemistry "Toso Montanari" & INSTM RU Bologna, Alma Mater Studiorum University of Bologna, V. Risorgimento 4, 40136 Bologna, Italy.
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22
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Taylor AP, Robinson RP, Fobian YM, Blakemore DC, Jones LH, Fadeyi O. Modern advances in heterocyclic chemistry in drug discovery. Org Biomol Chem 2018; 14:6611-37. [PMID: 27282396 DOI: 10.1039/c6ob00936k] [Citation(s) in RCA: 437] [Impact Index Per Article: 72.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
New advances in synthetic methodologies that allow rapid access to a wide variety of functionalized heterocyclic compounds are of critical importance to the medicinal chemist as it provides the ability to expand the available drug-like chemical space and drive more efficient delivery of drug discovery programs. Furthermore, the development of robust synthetic routes that can readily generate bulk quantities of a desired compound help to accelerate the drug development process. While established synthetic methodologies are commonly utilized during the course of a drug discovery program, the development of innovative heterocyclic syntheses that allow for different bond forming strategies are having a significant impact in the pharmaceutical industry. This review will focus on recent applications of new methodologies in C-H activation, photoredox chemistry, borrowing hydrogen catalysis, multicomponent reactions, regio- and stereoselective syntheses, as well as other new, innovative general syntheses for the formation and functionalization of heterocycles that have helped drive project delivery. Additionally, the importance and value of collaborations between industry and academia in shaping the development of innovative synthetic approaches to functionalized heterocycles that are of greatest interest to the pharmaceutical industry will be highlighted.
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Affiliation(s)
- Alexandria P Taylor
- Worldwide Medicinal Chemistry, Pfizer, Eastern Point Road, Groton, CT 06340, USA.
| | - Ralph P Robinson
- Worldwide Medicinal Chemistry, Pfizer, Eastern Point Road, Groton, CT 06340, USA.
| | - Yvette M Fobian
- Worldwide Medicinal Chemistry, Pfizer, Eastern Point Road, Groton, CT 06340, USA.
| | - David C Blakemore
- Worldwide Medicinal Chemistry, Pfizer, Eastern Point Road, Groton, CT 06340, USA.
| | - Lyn H Jones
- Worldwide Medicinal Chemistry, Pfizer, 610 Main Street, Cambridge, MA 02139, USA
| | - Olugbeminiyi Fadeyi
- Worldwide Medicinal Chemistry, Pfizer, Eastern Point Road, Groton, CT 06340, USA.
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23
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Xie LY, Peng S, Liu F, Chen GR, Xia W, Yu X, Li WF, Cao Z, He WM. Metal-free deoxygenative sulfonylation of quinoline N-oxides with sodium sulfinates via a dual radical coupling process. Org Chem Front 2018. [DOI: 10.1039/c8qo00661j] [Citation(s) in RCA: 119] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first example of a metal- and reductant-free deoxygenative sulfonylation of quinoline N-oxides with sodium sulfinates via a dual radical coupling process is reported.
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Affiliation(s)
- Long-Yong Xie
- Hunan Provincial Engineering Research Center for Ginkgo biloba
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
| | - Sha Peng
- Hunan Provincial Engineering Research Center for Ginkgo biloba
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
| | - Fang Liu
- Hunan Provincial Engineering Research Center for Ginkgo biloba
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
| | - Guan-Rong Chen
- Hunan Provincial Engineering Research Center for Ginkgo biloba
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
| | - Wen Xia
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education
- Hunan University of Science and Technology
- Xiangtan 411201
- China
| | - Xianyong Yu
- Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education
- Hunan University of Science and Technology
- Xiangtan 411201
- China
| | - Wen-Feng Li
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
- Changsha University of Science and Technology
- Changsha
- China
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
- Changsha University of Science and Technology
- Changsha
- China
| | - Wei-Min He
- Hunan Provincial Engineering Research Center for Ginkgo biloba
- Hunan University of Science and Engineering
- Yongzhou 425100
- China
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24
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González-Bobes F, Hickey MR, Cohen B, Bultman M, Chen K, Fanfair D, Rosso VW, Strotman NA, Mudryk B, Murugesan S, Schild RL, Ivy S, Eastgate MD, Sweeney JT, Conlon DA. Preparation of the HIV Attachment Inhibitor BMS-663068. Part 5. Selective C-7 Bromination of the 6-Azaindole Core. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00132] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francisco González-Bobes
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Matthew R. Hickey
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Benjamin Cohen
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Michael Bultman
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Ke Chen
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Dayne Fanfair
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Victor W. Rosso
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Neil A. Strotman
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Boguslaw Mudryk
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Saravanababu Murugesan
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Richard L. Schild
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Sabrina Ivy
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Martin D. Eastgate
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - Jason T. Sweeney
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
| | - David A. Conlon
- Chemical and Synthetic Development, Bristol-Myers Squibb Company, One Squibb
Drive, New Brunswick, New
Jersey 08903-0191, United States
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25
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Hattori H, Yokoshima S, Fukuyama T. Total Syntheses of Aurachins A and B. Angew Chem Int Ed Engl 2017; 56:6980-6983. [DOI: 10.1002/anie.201702204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Haruhiko Hattori
- Graduate School of Pharmaceutical Sciences; Nagoya University, Furo-cho, Chikusa-ku; Nagoya 464-8601 Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences; Nagoya University, Furo-cho, Chikusa-ku; Nagoya 464-8601 Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences; Nagoya University, Furo-cho, Chikusa-ku; Nagoya 464-8601 Japan
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26
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Affiliation(s)
- Haruhiko Hattori
- Graduate School of Pharmaceutical Sciences; Nagoya University, Furo-cho, Chikusa-ku; Nagoya 464-8601 Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences; Nagoya University, Furo-cho, Chikusa-ku; Nagoya 464-8601 Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences; Nagoya University, Furo-cho, Chikusa-ku; Nagoya 464-8601 Japan
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27
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Abstract
Azines, which are six-membered aromatic compounds containing one or more nitrogen atoms, serve as ubiquitous structural cores of aromatic species with important applications in biological and materials sciences. Among a variety of synthetic approaches toward azines, C-H functionalization represents the most rapid and atom-economical transformation, and it is advantageous for the late-stage functionalization of azine-containing functional molecules. Since azines have several C-H bonds with different reactivities, the development of new reactions that allow for the functionalization of azines in a regioselective fashion has comprised a central issue. This review describes recent advances in the C-H functionalization of azines categorized as follows: (1) SNAr reactions, (2) radical reactions, (3) deprotonation/functionalization, and (4) metal-catalyzed reactions.
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Affiliation(s)
- Kei Murakami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, and ‡JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University , Chikusa, Nagoya 464-8602, Japan
| | - Shuya Yamada
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, and ‡JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University , Chikusa, Nagoya 464-8602, Japan
| | - Takeshi Kaneda
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, and ‡JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University , Chikusa, Nagoya 464-8602, Japan
| | - Kenichiro Itami
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, and ‡JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University , Chikusa, Nagoya 464-8602, Japan
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28
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Bugaenko DI, Yurovskaya MA, Karchava AV. Quaternary N-(2-Pyridyl)-DABCO Salts: One-Pot in Situ Formation from Pyridine-N-oxides and Reactions with Nucleophiles: A Mild and Selective Route to Substituted N-(2-Pyridyl)-N′-ethylpiperazines. J Org Chem 2017; 82:2136-2149. [DOI: 10.1021/acs.joc.6b02952] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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29
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Bi WZ, Sun K, Qu C, Chen XL, Qu LB, Zhu SH, Li X, Wu HT, Duan LK, Zhao YF. A direct metal-free C2–H functionalization of quinoline N-oxides: a highly selective amination and alkylation strategy towards 2-substituted quinolines. Org Chem Front 2017. [DOI: 10.1039/c7qo00311k] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An efficient one-pot methodology for C2-selective amination and alkylation of quinoline N-oxides was developed in the presence of diethyl H-phosphonate.
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Affiliation(s)
- Wen-Zhu Bi
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Kai Sun
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Chen Qu
- Department of Chemical and Biomolecular Engineering
- University of Notre Dame
- Notre Dame
- USA
| | - Xiao-Lan Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
- Luoyang Institute of Science and Technology
| | - Shao-Hua Zhu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Xu Li
- Institute of Chemistry Co. Ltd
- Henan Academy of Sciences
- Zhengzhou
- China
| | - Hai-Tao Wu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Li-Kun Duan
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Yu-Fen Zhao
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
- Department of Chemistry
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30
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Chen MT, You X, Bai LG, Luo QL. Metal-free phosphonation of heteroarene N-oxides with trialkyl phosphite at room temperature. Org Biomol Chem 2017; 15:3165-3169. [DOI: 10.1039/c7ob00402h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heteroarene N-oxides were successfully converted to heteroarylphosphonates in a very short time under mild conditions through in situ activation with CBrCl3.
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Affiliation(s)
- Ming-Tao Chen
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Xia You
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Li-Gang Bai
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Qun-Li Luo
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
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31
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Wang D, Zhao J, Wang Y, Hu J, Li L, Miao L, Feng H, Désaubry L, Yu P. A General and Efficient Synthesis of 2-Pyridones, 2-Quinolinones, and 1-Isoquinolinones from Azine N
-Oxides. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600430] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Dong Wang
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Junjie Zhao
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Yuxi Wang
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Jianyong Hu
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Linna Li
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Longfei Miao
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Hairong Feng
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
| | - Laurent Désaubry
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
- Laboratory of Therapeutic Innovation (UMR 7200); Faculty of Pharmacy; University of Strasbourg-CNRS; Illkirch France
| | - Peng Yu
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry; Key Laboratory of Industrial Fermentation Microbiology of Ministry of Education; Tianjin Key Laboratory of Industry Microbiology; College of Biotechnology; Tianjin University of Science and Technology; No. 29, 13th Avenue, TEDA Tianjin 300457 China
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32
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Moon PJ, Yin S, Lundgren RJ. Ambient Decarboxylative Arylation of Malonate Half-Esters via Oxidative Catalysis. J Am Chem Soc 2016; 138:13826-13829. [DOI: 10.1021/jacs.6b08906] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Patrick J. Moon
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Shengkang Yin
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | - Rylan J. Lundgren
- Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
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33
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Johnson TC, Marsden SP. Precious-Metal-Free Heteroarylation of Azlactones: Direct Synthesis of α-Pyridyl, α-Substituted Amino Acid Derivatives. Org Lett 2016; 18:5364-5367. [DOI: 10.1021/acs.orglett.6b02731] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Tarn C. Johnson
- School of Chemistry and Institute
of Process Research and Development, University of Leeds, Leeds, LS2 9JT, U.K
| | - Stephen P. Marsden
- School of Chemistry and Institute
of Process Research and Development, University of Leeds, Leeds, LS2 9JT, U.K
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34
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Du B, Qian P, Wang Y, Mei H, Han J, Pan Y. Cu-Catalyzed Deoxygenative C2-Sulfonylation Reaction of Quinoline N-Oxides with Sodium Sulfinate. Org Lett 2016; 18:4144-7. [DOI: 10.1021/acs.orglett.6b02289] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bingnan Du
- School of Chemistry and Chemical
Engineering, State Key laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China
| | - Ping Qian
- School of Chemistry and Chemical
Engineering, State Key laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China
| | - Yang Wang
- School of Chemistry and Chemical
Engineering, State Key laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China
| | - Haibo Mei
- School of Chemistry and Chemical
Engineering, State Key laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China
| | - Jianlin Han
- School of Chemistry and Chemical
Engineering, State Key laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China
| | - Yi Pan
- School of Chemistry and Chemical
Engineering, State Key laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, China
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35
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Aithagani SK, Kumar M, Yadav M, Vishwakarma RA, Singh PP. Metal-Free, Phosphonium Salt-Mediated Sulfoximination of Azine N-Oxides: Approach for the Synthesis of N-Azine Sulfoximines. J Org Chem 2016; 81:5886-94. [PMID: 27304317 DOI: 10.1021/acs.joc.6b00593] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report a simple and metal-free method for the synthesis of N-azine sulfoximines by the nucleophilic substitution of azine N-oxides with NH-sulfoximines. The present method works at room temperature with wide functional group compatibility and gives several unprecedented N-azine sulfoximines. The reaction conditions were also found suitable with enantiopure substrates and furnished products without any racemization. It also finds an application in the sulfoximination of azine-based functional molecules such as 2,2'-bipyridine, 1,10-phenanthroline, and quinine.
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Affiliation(s)
- Sravan Kumar Aithagani
- 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
| | - Mahipal Yadav
- 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
| | - 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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36
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Su Y, Zhou X, He C, Zhang W, Ling X, Xiao X. In Situ Generated HypoIodite Activator for the C2 Sulfonylation of Heteroaromatic N-oxides. J Org Chem 2016; 81:4981-7. [PMID: 27267071 DOI: 10.1021/acs.joc.6b00475] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A mild approach for direct C2 sulfonylation of heteroaromatic N-oxides with sulfonyl hydrazides affording 2-sulfonyl quinolines/pyridines has been developed. A variety of heteroaromatic N-oxides and sulfonyl hydrazides participate effectively in this transformation which uses hypoiodites (generated in situ from NaI and TBHP) as a means of substrate activators. In this reaction, the N-oxide plays a dual role, acting as a traceless directing group as well as a source of oxygen atom.
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Affiliation(s)
- Yuan Su
- Medical College, Hunan Normal University , Changsha 410081, China
| | - Xuejun Zhou
- Medical College, Hunan Normal University , Changsha 410081, China
| | - Chunlian He
- Medical College, Hunan Normal University , Changsha 410081, China
| | - Wei Zhang
- Medical College, Hunan Normal University , Changsha 410081, China
| | - Xiao Ling
- Medical College, Hunan Normal University , Changsha 410081, China
| | - Xia Xiao
- Medical College, Hunan Normal University , Changsha 410081, China
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37
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Lian Y, Coffey SB, Li Q, Londregan AT. Preparation of Heteroaryl Ethers from Azine N-Oxides and Alcohols. Org Lett 2016; 18:1362-5. [DOI: 10.1021/acs.orglett.6b00295] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yajing Lian
- Pfizer Worldwide Medicinal Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
| | - Steven B. Coffey
- Pfizer Worldwide Medicinal Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
| | - Qifang Li
- Pfizer Worldwide Medicinal Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
| | - Allyn T. Londregan
- Pfizer Worldwide Medicinal Chemistry, Eastern Point
Road, Groton, Connecticut 06340, United States
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38
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Johnson TC, Marsden SP. A convergent, umpoled synthesis of 2-(1-amidoalkyl)pyridines. Beilstein J Org Chem 2016; 12:1-4. [PMID: 26877802 PMCID: PMC4734400 DOI: 10.3762/bjoc.12.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 12/21/2015] [Indexed: 11/23/2022] Open
Abstract
A convenient, one-pot, two-component synthesis of 2-(1-amidoalkyl)pyridines is reported, based upon the substitution of suitably-activated pyridine N-oxides by azlactone nucleophiles, followed by decarboxylative azlactone ring-opening. The synthesis obviates the need for precious metal catalysts to achieve a formal enolate arylation reaction, and constitutes a formally ‘umpoled’ approach to this valuable class of bioactive structures.
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Affiliation(s)
- Tarn C Johnson
- Institute of Process Research and Development, School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
| | - Stephen P Marsden
- Institute of Process Research and Development, School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
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39
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Jang HL, Kim HT, Cho EJ, Joo JM. Electronically Matching C−H Alkylation Strategies for the Synthesis of α-Heteroaryl Acetic Acid Derivatives. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500388] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ha-Lim Jang
- Department of Chemistry; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Hyun Tae Kim
- Department of Chemistry; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry; Chung-Ang University; Seoul 06974 Republic of Korea
| | - Jung Min Joo
- Department of Chemistry; Chemistry Institute of Functional Materials; Pusan National University; Busan 46241 Republic of Korea
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40
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Zhu J, Chen Y, Lin F, Wang B, Chen Z, Liu L. NiSO4-catalyzed C–H activation/C–S cross-coupling of 1,2,3-triazole N-oxides with thiols. Org Biomol Chem 2015; 13:3711-20. [DOI: 10.1039/c4ob02586e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
An efficient nickel-catalyzed protocol for C–S cross-coupling through the direct functionalization of 2-aryl-1,2,3-triazole N-oxide C–H bonds with aryl or alkyl thiols, or diphenyl disulfide has been developed.
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Affiliation(s)
- Jiayi Zhu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- PR China
| | - Yu Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- PR China
| | - Feng Lin
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- PR China
| | - Baoshuang Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- PR China
| | - Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- PR China
| | - Liangxian Liu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- PR China
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41
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Overcoming Electronics with Strategy. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/b978-0-08-100023-6.00007-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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