1
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Wang Q, Su B, Zhang H. Total Synthesis of the Proposed Structure of Tyloindane and Its Diastereoisomer. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0037-1610789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractIt is intriguing that tyloindane, which was isolated together with phenanthroindolizidine alkaloids, contains no nitrogen atom. Attracted by its unique structure and uncovered biological activity, we synthesized the proposed structure of tyloindane and its diastereoisomer. To achieve this goal, several strategies that include an aryl/alkene oxidative coupling, radical cyclization, and intramolecular Parham alkylation, were explored. The 1H NMR data of the synthesized compounds do not match those of the isolated sample (tyloindane), indicating that the structure of tyloindane should be reassigned.
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Affiliation(s)
- Qingmin Wang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University
| | - Bo Su
- College of Pharmacy, Nankai University
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University
| | - Hui Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Research Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University
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2
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Qi Z, Wang S. Copper-Catalyzed β-Lactam Formation Initiated by 1,3-Azaprotio Transfer of Oximes and Methyl Propiolate. Org Lett 2021; 23:5777-5781. [PMID: 34240879 DOI: 10.1021/acs.orglett.1c01937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A copper(II)-catalyzed protocol to construct trans-configured β-lactams and spirocyclic β-lactams from oximes and methyl propiolate has been developed, which features excellent substrate flexibility and diastereoselectivity (up to >99:1 dr). In situ FT-IR mechanistic experiments support that ketene species might be involved in the formation of β-lactams.
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Affiliation(s)
- Zhenjie Qi
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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3
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Yao X, Qi L, Li R, Zhen Q, Liu J, Zhao Z, Shao Y, Hu M, Chen J. Palladium-Catalyzed Cascade Reactions of δ-Ketonitriles with Arylboronic Acids: Synthesis of Pyridines. ACS COMBINATORIAL SCIENCE 2020; 22:114-119. [PMID: 32049476 DOI: 10.1021/acscombsci.9b00198] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This study presents the first example of the Pd-catalyzed cascade reactions of 5-oxohexanenitrile with arylboronic acids, affording important synthon 2-methylpyridines that can be further translated through C(sp3)-H functionalization to construct pyridine derivatives. Furthermore, this chemistry allows 5-oxo-5-arylpentanenitrile to react with arylboronic acids to provide unsymmetrical 2,6-diarylpyridines. This protocol paves the way for the practical and atom economical syntheses of valuable pyridines with broad functional groups in moderate to excellent yields under mild conditions.
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Affiliation(s)
- Xinrong Yao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Linjun Qi
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Renhao Li
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, P. R. China
| | - Qianqian Zhen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Jichao Liu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Zhiwei Zhao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Yinlin Shao
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Maolin Hu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Jiuxi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China
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4
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Zhang M, Liu S, Li H, Guo Y, Li N, Guan M, Mehfooz H, Zhao J, Zhang Q. Copper‐Catalyzed Cope‐Type Hydroamination of Nonactivated Olefins toward Cyclic Nitrones: Scope, Mechanism, and Enantioselective Process Development. Chemistry 2019; 25:12620-12627. [DOI: 10.1002/chem.201902683] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/19/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Mengru Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Shuang Liu
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Hexin Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Yajing Guo
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Na Li
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Meihui Guan
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Haroon Mehfooz
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Key Laboratory of Functional Molecule Synthesis of Jilin ProvinceDepartment of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Road Shanghai 200032 P. R. China
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5
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Wang C, Cui Q, Zhang Z, Yao ZJ, Wang S, Yu ZX. Divergent Synthesis of Oxa-Cyclic Nitrones through Gold(I)-Catalyzed 1,3-Azaprotio Transfer of Propargylic α-Ketocarboxylate Oximes: Experimental and DFT Studies. Chemistry 2019; 25:9821-9826. [PMID: 31090114 DOI: 10.1002/chem.201901522] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 05/12/2019] [Indexed: 11/09/2022]
Abstract
1,3-Azaprotio transfer of propargylic α-ketocarboxylate oximes, a new type of alkynyl oximes featuring an ester tether, has been explored by taking advantage of gold catalysis. The incorporation of an oxygen atom to the chain of alkynyl oximes led to the formation of two different oxa-cyclic nitrones. It was found that internal alkynyl oximes with an E-configuration deliver five-membered nitrones, whereas terminal alkynyl oximes with an E-configuration afford six-membered nitrones. DFT calculations on four possible pathways supported a stepwise formation of C-N and C-H bonds, in which a 1,3-acyloxy-migration competes with the 1,3-azaprotio-transfer, especially in the case of internal alkynyl oximes. The relative nucleophilic properties of oxygen in the carbonyl group and the nitrogen in the oxime, the electronic effects of alkynes, and the influence of the ring system have been investigated computationally.
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Affiliation(s)
- Chunhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Qi Cui
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular, Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
| | - Zhixin Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhu-Jun Yao
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular, Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, China
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6
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Liu M, Zhou T, Zhang M, Zhao J, Zhang Q. Palladium(II)‐Catalyzed Cope‐Type Hydroamination: Efficient Access to Five and Six‐Membered Cyclic Nitrones. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900367] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Mingzhu Liu
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Tingting Zhou
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Mengru Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Jinbo Zhao
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
| | - Qian Zhang
- Department of ChemistryNortheast Normal University 5268 Renmin Street Changchun Jilin 130024 P. R. China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, CAS Shanghai 200032 P. R. China
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7
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Kelgokmen Y, Zora M. A new strategy for the synthesis of pyridines from N-propargylic β-enaminothiones. Org Biomol Chem 2019; 17:2529-2541. [DOI: 10.1039/c8ob03180k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A new robust method for the synthesis of 2,4,5-trisubstituted pyridines with high efficiency and broad functional group tolerance is described.
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Affiliation(s)
- Yilmaz Kelgokmen
- Department of Chemistry
- Middle East Technical University
- 06800 Ankara
- Turkey
| | - Metin Zora
- Department of Chemistry
- Middle East Technical University
- 06800 Ankara
- Turkey
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8
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Liu W, Zeng R, Han Y, Wang Y, Tao H, Chen Y, Liu F, Liang Y. Computational and experimental investigation on the BCl3 promoted intramolecular amination of alkenes and alkynes. Org Biomol Chem 2019; 17:2776-2783. [DOI: 10.1039/c9ob00264b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The BCl3 promoted aminoboration of alkenes and alkynes was investigated both computationally and experimentally, leading to the discovery of a metal-free hydroamination of alkynes.
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Affiliation(s)
- Wei Liu
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Ruxin Zeng
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yingbin Han
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yajun Wang
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Huimin Tao
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Yu Chen
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
| | - Fang Liu
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
- China
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210023
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9
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Yerri J, Baati R. Sonogashira Reaction of Bromofluoropyridinaldoxime Nuclei: Convergent Synthesis of Functionalized 2- and 3-Fluoropyridine Scaffolds. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jagadeesh Yerri
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, ICPEES, UMR CNRS 7515; 25 rue Becquerel 67087 Strasbourg France
| | - Rachid Baati
- Institut de Chimie et Procédés pour l'Energie, l'Environnement et la Santé, ICPEES, UMR CNRS 7515; 25 rue Becquerel 67087 Strasbourg France
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10
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Vankudoth K, Velisoju VK, Gutta N, Sathu NK, Aytam HP, Inkollu S, Akula V. Zn-Modified CuCr2O4 as Stable and Active Catalyst for the Synthesis of 2,6-Dimethylpyrazine: Valorization of Crude Glycerol Obtained from a Biodiesel Plant. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b02594] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Krishna Vankudoth
- Academy of Scientific
and Innovative Research, CSIR- Human Resource Development Centre, Ghaziabad, Uttar Pradesh 201 002, India
- Catalysis
Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
| | - Vijay Kumar Velisoju
- Catalysis
Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
| | - Naresh Gutta
- Catalysis
Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
| | - Naveen Kumar Sathu
- Catalysis
Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
| | - Hari Padmasri Aytam
- Department
of Chemistry, University College for Women, Osmania University, Koti,
Hyderabad, Telangana 500
095, India
| | - Sreedhar Inkollu
- Department
of Chemical Engineering, BITS Pilani Hyderabad Campus, Shameerpet (Mandal), Hyderabad, Telangana 500 078, India
| | - Venugopal Akula
- Academy of Scientific
and Innovative Research, CSIR- Human Resource Development Centre, Ghaziabad, Uttar Pradesh 201 002, India
- Catalysis
Laboratory, Inorganic and Physical Chemistry Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, Telangana 500007, India
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11
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Vankudoth K, Gutta N, Velisoju VK, Mutyala S, Aytam HP, Akula V. CuCr2O4 derived by the sol–gel method as a highly active and selective catalyst for the conversion of glycerol to 2,6-dimethylpyrazine: a benign and eco-friendly process. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00769h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A direct correlation between Cu metal surface area and surface basic sites of CuCr2O4 and the 2,6-dimethylpyrazine rate is established.
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Affiliation(s)
- Krishna Vankudoth
- Academy of Scientific and Innovative Research
- India
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
| | - Naresh Gutta
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Vijay Kumar Velisoju
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Suresh Mutyala
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Hari Padmasri Aytam
- Department of Chemistry
- University College for Women
- Osmania University
- Koti
- Hyderabad - 500 095
| | - Venugopal Akula
- Academy of Scientific and Innovative Research
- India
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
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12
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Vankudoth K, Padmasri AH, Sarkari R, Velisoju VK, Gutta N, Sathu NK, Rohita CN, Akula V. The role of Lewis acid–base pair sites in ZnO–ZnCr2O4 catalysts for cyclization via dehydrogenative condensation of crude glycerol and 1,2-propanediamine for the synthesis of 2,6-dimethylpyrazine. NEW J CHEM 2017. [DOI: 10.1039/c7nj01819c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DRIFT spectroscopic data revealed the role of surface Lewis acid sites on the synthesis of 2,6-dimethylpyrazine.
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Affiliation(s)
- Krishna Vankudoth
- Academy of Scientific and Innovative Research
- India
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
| | - A. Hari Padmasri
- Department of Chemistry
- University College for Women
- Osmania University
- Hyderabad – 500 095
- India
| | - Reema Sarkari
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Vijay Kumar Velisoju
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Naresh Gutta
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Naveen Kumar Sathu
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - C. N. Rohita
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Venugopal Akula
- Academy of Scientific and Innovative Research
- India
- Catalysis Laboratory
- Inorganic and Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
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13
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Kelgokmen Y, Zora M. Facile synthesis of heavily-substituted alkynylpyridines via a Sonogashira approach. RSC Adv 2016. [DOI: 10.1039/c5ra21701f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
A robust synthesis of highly-substituted alkynylpyridines via a Sonogashira approach is described, providing a library of functionalized pyridines for biological studies.
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Affiliation(s)
- Yilmaz Kelgokmen
- Department of Chemistry
- Middle East Technical University
- 06800 Ankara
- Turkey
| | - Metin Zora
- Department of Chemistry
- Middle East Technical University
- 06800 Ankara
- Turkey
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14
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Kwon Y, Jeon M, Park JY, Rhee YH, Park J. Synthesis of 1H-azadienes and application to one-pot organic transformations. RSC Adv 2016. [DOI: 10.1039/c5ra26230e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
1H-Azadienes were synthesized from allyl azides by ruthenium catalysis under mild and neutral conditions. Applications of the 1H-azadienes were demonstrated for the one-pot synthesis of nitrogen containing organic compounds.
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Affiliation(s)
- Yearang Kwon
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang
- Korea
| | - Mina Jeon
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang
- Korea
| | - Jin Yong Park
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang
- Korea
| | - Young Ho Rhee
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang
- Korea
| | - Jaiwook Park
- Department of Chemistry
- POSTECH (Pohang University of Science and Technology)
- Pohang
- Korea
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15
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Jha AK, Jain N. The microwave-assisted ortho-alkylation of azine N-oxides with N-tosylhydrazones catalyzed by copper(i) iodide. Chem Commun (Camb) 2016; 52:1831-4. [DOI: 10.1039/c5cc07833d] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A regioselective direct ortho-alkylation of azine N-oxides has been achieved under ligand-free conditions using copper(i) iodide and microwave conditions.
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Affiliation(s)
- Abadh Kishor Jha
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
| | - Nidhi Jain
- Department of Chemistry
- Indian Institute of Technology
- New Delhi-110016
- India
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16
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Facile synthesis of iodopyridines from N-propargylic β-enaminones via iodine-mediated electrophilic cyclization. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.070] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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17
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Würdemann M, Christoffers J. Investigations on intramolecular 1,3-dipolar cycloadditions for the synthesis of isoxazolo-annulated pyrrolidines, piperidines and azepanes. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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18
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Addla D, Kantevari S. Novel Synthesis of 6-Substituted 2-Picolines from Aryl/heteroaryl β-Enaminones and Meldrum's Acid Using CeCl 3.7H 2O/NaI. J Heterocycl Chem 2014. [DOI: 10.1002/jhet.1941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dinesh Addla
- Crop Protection Chemicals Division (Organic Chemistry Division-II); Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Srinivas Kantevari
- Crop Protection Chemicals Division (Organic Chemistry Division-II); Indian Institute of Chemical Technology; Hyderabad 500007 India
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19
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Attanasi OA, Favi G, Giorgi G, Majer R, Perrulli FR, Santeusanio S. Access to novel imidazo[1,5-a]pyrazine scaffolds by the combined use of a three-component reaction and a base-assisted intramolecular cyclization. Org Biomol Chem 2014; 12:4610-9. [PMID: 24848196 DOI: 10.1039/c4ob00676c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A novel and practical two-step approach to an intriguing class of imidazo[1,5-a]pyrazines with exocyclic C=X (X = CH2, O) bonds is described. The process utilizes a sequential three-component reaction of propargyl amine or aminoester, 1,2-diaza-1,3-dienes and isothiocyanates to furnish functionalized 2-thiohydantoins which are transformed into thiohydantoin-fused tetrahydropyrazines by subsequent regioselective base-promoted cyclization.
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Affiliation(s)
- Orazio A Attanasi
- Department of Biomolecular Sciences, Section of Organic Chemistry and Organic Natural Compounds, University of Urbino "Carlo Bo", Via I Maggetti 24, 61029 Urbino, Italy.
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20
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Beauchemin AM. Recent developments in Cope-type hydroamination reactions of hydroxylamine and hydrazine derivatives. Org Biomol Chem 2014; 11:7039-50. [PMID: 24056974 DOI: 10.1039/c3ob41172a] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Cope-type hydroaminations are versatile for the direct amination of alkenes, alkynes and allenes using hydroxylamines and hydrazine derivatives. These reactions occur via a concerted, 5-membered cyclic transition state that is the microscopic reverse of the Cope elimination. This article focuses on recent developments, including intermolecular variants, directed reactions, and asymmetric variants using aldehydes as tethering catalysts, and their applications in target-oriented synthesis.
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Affiliation(s)
- André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada. andre.beauchemin@uottawa
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21
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Margrey KA, Hazzard AD, Scheerer JR. Synthesis of 2-Pyridones by Cycloreversion of [2.2.2]- Bicycloalkene Diketopiperazines. Org Lett 2014; 16:904-7. [DOI: 10.1021/ol403632t] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Kaila A. Margrey
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Amy D. Hazzard
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Jonathan R. Scheerer
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
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22
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Peng X, Tong BMK, Hirao H, Chiba S. Inorganic-Base-Mediated Hydroamination of Alkenyl Oximes for the Synthesis of Cyclic Nitrones. Angew Chem Int Ed Engl 2014; 53:1959-62. [DOI: 10.1002/anie.201308617] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Indexed: 11/09/2022]
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23
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Peng X, Tong BMK, Hirao H, Chiba S. Inorganic-Base-Mediated Hydroamination of Alkenyl Oximes for the Synthesis of Cyclic Nitrones. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201308617] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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M. Beauchemin A, Das Neves N, Raymond M. Expedient Synthesis of 2-Oxopiperazines Using a SN2 / Cope-Type Hydroamination Sequence. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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25
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Gagnon A, Petiot P. Palladium-Catalyzed Cross-Coupling Reaction of Trialkylbismuthines with 2-Haloazines and Diazines. HETEROCYCLES 2014. [DOI: 10.3987/com-13-s(s)114] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Longstreet AR, Campbell BS, Gupton BF, McQuade DT. Improved synthesis of mono- and disubstituted 2-halonicotinonitriles from alkylidene malononitriles. Org Lett 2013; 15:5298-301. [PMID: 24093933 DOI: 10.1021/ol4025265] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pyridines with 2,3,4 and/or 5 substitution remain challenging to prepare. Existing strategies to form multisubstituted 2-halonicotinonitriles via enamines suffer from dimerization of the starting alkylidene malononitriles resulting in low yields. Through alteration of reaction conditions, a new high yielding method into enamines was realized by condensing DMF-DMA and alkylidene malononitriles in the presence of substoichiometric acetic anhydride. Cyclization of the resulting enamines under Pinner conditions provided 2-halonicotinonitriles in high overall yields.
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Affiliation(s)
- Ashley R Longstreet
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States , and Department of Chemistry, Department of Chemical and Life Science Engineering, Virginia Commonwealth University , Richmond, Virginia 23284, United States
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27
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Goh KKK, Kim S, Zard SZ. Free-Radical Variant for the Synthesis of Functionalized 1,5-Diketones. Org Lett 2013; 15:4818-21. [DOI: 10.1021/ol402213k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Kelvin Kau Kiat Goh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore, and Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Sunggak Kim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore, and Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
| | - Samir Z. Zard
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore, and Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique, 91128 Palaiseau Cedex, France
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28
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Hunt AD, Dion I, Das Neves N, Taing S, Beauchemin AM. Synthesis of Azomethine Imines Using an Intramolecular Alkyne Hydrohydrazination Approach. J Org Chem 2013; 78:8847-52. [DOI: 10.1021/jo4011409] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ashley D. Hunt
- Centre for
Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON, K1N
6N5, Canada
| | - Isabelle Dion
- Centre for
Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON, K1N
6N5, Canada
| | - Nicolas Das Neves
- Centre for
Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON, K1N
6N5, Canada
| | - Sandrine Taing
- Centre for
Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON, K1N
6N5, Canada
| | - André M. Beauchemin
- Centre for
Catalysis Research and Innovation, Department of Chemistry, University of Ottawa, 10 Marie-Curie, Ottawa, ON, K1N
6N5, Canada
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29
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Kim DS, Park JW, Jun CH. Pyridine synthesis by reactions of allyl amines and alkynes proceeding through a Cu(OAc)2 oxidation and Rh(III)-catalyzed N-annulation sequence. Chem Commun (Camb) 2013; 48:11334-6. [PMID: 23069867 DOI: 10.1039/c2cc36699a] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A new methodology has been developed for the synthesis of pyridines from allyl amines and alkynes, which involves sequential Cu(II)-promoted dehydrogenation of the allylamine and Rh(III)-catalyzed N-annulation of the resulting α,β-unsaturated imine and alkyne.
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Affiliation(s)
- Dong-Su Kim
- Department of Chemistry, Yonsei University, 50 Yonseiro, Seodaemun-gu, Seoul 120-749, Korea
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30
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Wei Y, Yoshikai N. Modular Pyridine Synthesis from Oximes and Enals through Synergistic Copper/Iminium Catalysis. J Am Chem Soc 2013; 135:3756-9. [DOI: 10.1021/ja312346s] [Citation(s) in RCA: 250] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Ye Wei
- Division of Chemistry
and Biological Chemistry, School
of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry
and Biological Chemistry, School
of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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31
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Zhang M, Cui X, Chen X, Wang L, Li J, Wu Y, Hou L, Wu Y. Facile synthesis of aryl(het)cyclopropane catalyzed by palladacycle. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.11.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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32
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Hemming K, Khan MN, Kondakal VVR, Pitard A, Qamar MI, Rice CR. Pyridines from Azabicyclo[3.2.0]hept-2-en-4-ones through a Proposed Azacyclopentadienone. Org Lett 2011; 14:126-9. [PMID: 22188404 DOI: 10.1021/ol202924s] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Karl Hemming
- Institute for Materials, Medicines and Molecular Sciences, Division of Chemistry, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, United Kingdom
| | - Musharraf N. Khan
- Institute for Materials, Medicines and Molecular Sciences, Division of Chemistry, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, United Kingdom
| | - Vishnu V. R. Kondakal
- Institute for Materials, Medicines and Molecular Sciences, Division of Chemistry, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, United Kingdom
| | - Arnaud Pitard
- Institute for Materials, Medicines and Molecular Sciences, Division of Chemistry, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, United Kingdom
| | - M. Ilyas Qamar
- Institute for Materials, Medicines and Molecular Sciences, Division of Chemistry, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, United Kingdom
| | - Craig R. Rice
- Institute for Materials, Medicines and Molecular Sciences, Division of Chemistry, School of Applied Sciences, University of Huddersfield, Queensgate, Huddersfield, West Yorkshire, HD1 3DH, United Kingdom
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33
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Chun YS, Lee JH, Kim JH, Ko YO, Lee SG. Tandem One-Pot Synthesis of Polysubstituted Pyridines Using the Blaise Reaction Intermediate and 1,3-Enynes. Org Lett 2011; 13:6390-3. [DOI: 10.1021/ol202691b] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yu Sung Chun
- Department of Chemistry and Nano Science (BK21), Ewha Womans University, Seoul 120-750, Korea
| | - Jun Hee Lee
- Department of Chemistry and Nano Science (BK21), Ewha Womans University, Seoul 120-750, Korea
| | - Ju Hyun Kim
- Department of Chemistry and Nano Science (BK21), Ewha Womans University, Seoul 120-750, Korea
| | - Young Ok Ko
- Department of Chemistry and Nano Science (BK21), Ewha Womans University, Seoul 120-750, Korea
| | - Sang-gi Lee
- Department of Chemistry and Nano Science (BK21), Ewha Womans University, Seoul 120-750, Korea
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34
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Sridharan V, Suryavanshi PA, Menéndez JC. Advances in the chemistry of tetrahydroquinolines. Chem Rev 2011; 111:7157-259. [PMID: 21830756 DOI: 10.1021/cr100307m] [Citation(s) in RCA: 773] [Impact Index Per Article: 59.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Vellaisamy Sridharan
- Departamento de Química Orgánica y Farmacéutica, Facultad de Farmacia, Universidad Complutense, Madrid, Spain
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35
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Basabe P, Blanco A, Marcos I, Díez D, Bodero O, Martín M, Urones J. Synthesis of spongidines A and D: marine metabolites phospholipase A2 inhibitors. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.084] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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36
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Xu H, Zhang Y, Huang J, Chen W. Copper-catalyzed synthesis of N-fused heterocycles through regioselective 1,2-aminothiolation of 1,1-dibromoalkenes. Org Lett 2010; 12:3704-7. [PMID: 20669979 DOI: 10.1021/ol101563f] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first aminothiolation of 1,1-dibromoalkene is described using an inexpensive copper/N,N-dimethylethylenediamine catalyst. The method provides a powerful means of using easily available 1,1-dihaloalkenes as precursors to fused heterocycles.
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Affiliation(s)
- Hui Xu
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, Peoples Republic of China
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37
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Rao W, Kothandaraman P, Koh CB, Chan PWH. Copper(II) Triflate-Catalyzed Intramolecular Hydroamination of Homoallylic Amino Alcohols as an Expedient Route to trans-2,5-Dihydro-1H-pyrroles and 1,2-Dihydroquinolines. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000450] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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39
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Lechel T, Dash J, Eidamshaus C, Brüdgam I, Lentz D, Reissig HU. A three-component synthesis of β-alkoxy-β-keto-enamides—flexible precursors for 4-hydroxypyridine derivatives and their palladium-catalysed reactions. Org Biomol Chem 2010; 8:3007-14. [PMID: 20473437 DOI: 10.1039/b925468d] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Tilman Lechel
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195, Berlin, Germany
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