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Tang Y, Pan W, Yang Y. Silver-Catalyzed Chlorocyclization for the Synthesis of 3-Chloro-2 H-chromenes. J Org Chem 2023. [PMID: 37410887 DOI: 10.1021/acs.joc.2c02864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
A silver-catalyzed chlorocyclization reaction of aryl 3-aryl-2-propyn-1-yl ethers in the presence of NCS under darkness was accomplished, which provides a straightforward and efficient access to 3-chloro-2H-chromenes.
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Affiliation(s)
- Yunhao Tang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 3491 Gaohai Road, Guiyang 550014, P. R. China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, 3491 Baijin Road, Guiyang 550014, P. R. China
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, P. R. China
| | - Weidong Pan
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 3491 Gaohai Road, Guiyang 550014, P. R. China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, 3491 Baijin Road, Guiyang 550014, P. R. China
- School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, P. R. China
| | - Yuzhu Yang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 3491 Gaohai Road, Guiyang 550014, P. R. China
- The Key Laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academy of Sciences, 3491 Baijin Road, Guiyang 550014, P. R. China
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2
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Venkatesh GB, HariPrasad S, Jeevan Chakravarthy AS. One-pot synthesis of a new class of alkynyl anionic synthons: the 4-(2',2-trimethylsilylethynylphenoxymethyl)-2 H-chromen-2-ones. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2150851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- G. B. Venkatesh
- Department of Chemistry, Government Pre-University College, Chickaballapur, India
| | - S. HariPrasad
- Department of Chemistry, Central College Campus, Bengaluru Central University, Bangalore, India
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3
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Madhura MJ, Jeevan Chakravarthy AS, Hariprasad S, Gayathri V. Suzuki–Miyaura Cross Coupling Reaction Using Reusable Polymer Anchored Palladium Catalyst. Catal Letters 2022. [DOI: 10.1007/s10562-022-04055-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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4
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Čubiňák M, Bigeon J, Galář P, Ondič L, Tobrman T. The Synthesis of Tetrasubstituted Cycloalkenes Bearing π‐Conjugated Substituents and Their Optical Properties. ChemistrySelect 2021. [DOI: 10.1002/slct.202103122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Marek Čubiňák
- Department of Organic Chemistry University of Chemistry and Technology, Prague Technická 5 166 28 Prague 6 Czech Republic
| | - John Bigeon
- Institute of Physics Czech Academy of Sciences Cukrovarnická 10 Prague 6 Czech Republic
| | - Pavel Galář
- Institute of Physics Czech Academy of Sciences Cukrovarnická 10 Prague 6 Czech Republic
| | - Lukáš Ondič
- Institute of Physics Czech Academy of Sciences Cukrovarnická 10 Prague 6 Czech Republic
| | - Tomáš Tobrman
- Department of Organic Chemistry University of Chemistry and Technology, Prague Technická 5 166 28 Prague 6 Czech Republic
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5
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Structural characterization, computational, charge density studies of 2-chloro-3-(2’-methoxy)-5,5-dimethyl-2-cyclohexenone. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129116] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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A. S. JC, K. P. P, G. B. V, S. H. Synthesis of some novel chloro-/aryl-substituted-5,5-dimethyl-2-cyclohexenones. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1723108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jeevan Chakravarthy A. S.
- Department of Chemistry, Central College Campus, Bengaluru Central University, Bengaluru, India
- Department of Chemistry, Jnana Bharathi Campus, Bangalore University, Bangalore, India
| | - Pavan K. P.
- Department of Post Graduate Studies in Chemistry, SVRM College, Acharya Nagarjuna University, Nagaram, India
| | - Venkatesh G. B.
- Department of Chemistry, Government Pre-University College, Chickaballapur, India
| | - HariPrasad S.
- Department of Chemistry, Central College Campus, Bengaluru Central University, Bengaluru, India
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7
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Jeevan Chakravarthy A, Madhura M, Gayathri V, HariPrasad S. Synthesis of 1-chlorocyclohexenyl-2-aminobenzenes: A new class of cyclic vinylamines by the Buchwald-Hartwig reaction. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Weidmann N, Ketels M, Knochel P. Natriierung von Aromaten und Heteroaromaten im kontinuierlichen Durchfluss. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201803961] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Niels Weidmann
- Ludwig-Maximilians-Universität MünchenDepartment Chemie Butenandtstraße 5–13, Haus F 81377 München Deutschland
| | - Marthe Ketels
- Ludwig-Maximilians-Universität MünchenDepartment Chemie Butenandtstraße 5–13, Haus F 81377 München Deutschland
| | - Paul Knochel
- Ludwig-Maximilians-Universität MünchenDepartment Chemie Butenandtstraße 5–13, Haus F 81377 München Deutschland
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9
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Weidmann N, Ketels M, Knochel P. Sodiation of Arenes and Heteroarenes in Continuous Flow. Angew Chem Int Ed Engl 2018; 57:10748-10751. [PMID: 29873427 DOI: 10.1002/anie.201803961] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Indexed: 12/12/2022]
Abstract
The first sodiations of (hetero)arenes in continuous flow using NaDA (sodium diisopropylamide) in Me2 EtN are reported. This flow procedure enables sodiation of functionalized arenes and heteroarenes that decompose under batch-sodiation conditions. The resulting sodiated (hetero)arenes react instantly with various electrophiles, such as ketones, aldehydes, isocyanates, alkyl bromides, and disulfides, affording polyfunctionalized (hetero)arenes in high yields. Scale-up is possible without further optimization.
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Affiliation(s)
- Niels Weidmann
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Marthe Ketels
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
| | - Paul Knochel
- Ludwig-Maximilians-Universität München, Department Chemie, Butenandtstrasse 5-13, Haus F, 81377, München, Germany
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10
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Carmel Y S, Begum NS, N L P, Suresh HP. Synthesis of-4-((4-trimethylsilyl-1 H-1,2,3-triazol-1-yl)methyl)-2 H-chromen-2-ones: A novel class of heteroaryl anionic synthon. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2017.1416634] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Sowmiya Carmel Y
- Department of Post-Graduate Studies in Chemistry, Bangalore University, Bangalore, India
| | - Noor Shahina Begum
- Department of Post-Graduate Studies in Chemistry, Bangalore University, Bangalore, India
| | - Prasad N L
- Department of Post-Graduate Studies in Chemistry, Bangalore University, Bangalore, India
| | - Hari Prasad Suresh
- Department of Post-Graduate Studies in Chemistry, Bangalore University, Bangalore, India
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