1
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Facile synthesis of 1-substituted 4-H phthalazine, a versatile scaffold for chemically diverse phthalazines. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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2
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Chen Q, Zheng X, Guo F, Liang K, Zhou F. Transition-Metal-Free Addition of Dialkyl Phosphites to Phthalazin-2-ium Bromide: Synthesis of α-Aminophosphonate Analogues. J Org Chem 2021; 86:18278-18286. [PMID: 34870429 DOI: 10.1021/acs.joc.1c02024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
α-Aminophosphonate analogues containing a phthalazine skeleton were efficiently obtained by a new transition-metal-free addition of dialkyl phosphites to phthalazin-2-ium bromide under mild conditions. A mechanistic study using isotope labeling and radical inhibition experiment revealed that the present transformation passes through a nucleophilic addition of dialkyl phosphates, rather than an insertion of P-H to carbenes.
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Affiliation(s)
- Qian Chen
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China.,School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
| | - Xuanming Zheng
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
| | - Fang Guo
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, China
| | - Kun Liang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
| | - Fanrui Zhou
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical Engineering, Southwest Forestry University, Kunming 650224, China
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3
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Le ST, Asahara H, Nishiwaki N. Synthesis of Nitroaromatic Compounds via Three-Component Ring Transformations. Molecules 2021; 26:molecules26030639. [PMID: 33530612 PMCID: PMC7865560 DOI: 10.3390/molecules26030639] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 01/23/2021] [Accepted: 01/24/2021] [Indexed: 11/30/2022] Open
Abstract
1-Methyl-3,5-dinitro-2-pyridone serves as an excellent substrate for nucleophilic-type ring transformation because of the electron deficiency and presence of a good leaving group. In this review, we focus on the three-component ring transformation (TCRT) of dinitropyridone involving a ketone and a nitrogen source. When dinitropyridone is allowed to react with a ketone in the presence of ammonia, TCRT proceeds to afford nitropyridines that are not easily produced by alternative procedures. Ammonium acetate can be used as a nitrogen source instead of ammonia to undergo the TCRT, leading to nitroanilines in addition to nitropyridines. In these reactions, dinitropyridone serves as a safe synthetic equivalent of unstable nitromalonaldehyde.
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Affiliation(s)
- Song Thi Le
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan; (S.T.L.); (H.A.)
- Center for Equipment and Labour Safety, Vietnam Institute for Building Materials (VIBM), Ministry of Construction, 235 Nguyen Trai, Thanh Xuan, Hanoi 100000, Vietnam
| | - Haruyasu Asahara
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan; (S.T.L.); (H.A.)
- Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka 565-0871, Japan
| | - Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan; (S.T.L.); (H.A.)
- Research Center for Molecular Design, Kochi University of Technology, Tosayamada, Kami, Kochi 782-8502, Japan
- Correspondence: ; Tel.: +81-887-57-2517
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4
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Zhu G, Zhang G. Access to a Phthalazine Derivative Through an Angular cis-Quinacridone. J Org Chem 2021; 86:1198-1203. [PMID: 33284013 DOI: 10.1021/acs.joc.0c02344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Intramolecular electrophilic cyclization of a bisanthranilate afforded an angular cis-quinacridone compound, which condensed with hydrazine to give a phthalazine derivative. A [2+2+2] cyclization reaction occurred at the C-N double bond position of phthalazine when reacted with dimethyl acetylenedicarboxylate. The structures of these novel compounds were confirmed by crystallographic analysis. The phthalazine derivative decomposes back to quinacridone at ambient condition in the dark and as a solid with a half lifetime of about 22 months.
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Affiliation(s)
- Guanxing Zhu
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing, 210037, People's Republic of China
| | - Gang Zhang
- Jiangsu Co-Innovation Center for Efficient Processing and Utilization of Forest Products, College of Chemical Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing, 210037, People's Republic of China
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5
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Chen Q, Luo M, Guo F, Liang K, Zhou F, Gao G. An Addition of Terminal Alkynes to Phthalazin‐2‐Ium Bromide Catalyzed by Copper. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Qian Chen
- Key Laboratory of Forest Resources Conservation and Utilization in the Southwest Mountains of China Ministry of Education, College of Chemical EngineeringSouthwest Forestry University Kunming 650224 People's Republic of China
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical EngineeringSouthwest Forestry University Kunming 650224 People's Republic of China
| | - Mingjian Luo
- School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150080 People's Republic of China
| | - Fang Guo
- School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150080 People's Republic of China
| | - Kun Liang
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical EngineeringSouthwest Forestry University Kunming 650224 People's Republic of China
| | - Fanrui Zhou
- Key Laboratory of State Forestry and Grassland Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China, College of Chemical EngineeringSouthwest Forestry University Kunming 650224 People's Republic of China
| | - Guolin Gao
- School of Chemistry and Chemical EngineeringHarbin Institute of Technology Harbin 150080 People's Republic of China
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6
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Yun YL, Yang J, Miao YH, Sun J, Wang XJ. Recent advances in Palladium(II)-catalyzed activation of aromatic ring C–H bonds. JOURNAL OF SAUDI CHEMICAL SOCIETY 2020. [DOI: 10.1016/j.jscs.2020.01.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Hinkle RJ, Speer DJ, Carnell BB, Kanter BL, Pike RD. Mild, Modular, and Convergent Synthesis of Helical Naphtho[2,1- c]chromenes via a Multistep Cyclization/Aromatization Cascade Sequence. J Org Chem 2019; 84:15633-15641. [PMID: 31684728 DOI: 10.1021/acs.joc.9b02058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Tetracyclic 6H-naphtho[2,1-c]chromenes are expeditiously synthesized through a BF3·OEt2-mediated, three-step cascade reaction, creating new central pyran and aromatic rings. The cascade involves the addition of phenol-derived alkynyl substrates to BF3-activated aldehydes followed by alkyne-Prins cyclization, Friedel-Crafts reaction, and final elimination. Aliphatic and electron-deficient aromatic aldehydes afford the products in 50-74% isolated yields, but benzaldehyde and tolualdehyde resulted in lower yields. X-ray analysis of a p-bromophenyl derivative (5aA) shows the two aromatic moieties are twisted by 28° to create a helical backbone.
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Affiliation(s)
- Robert J Hinkle
- Department of Chemistry , William & Mary , P.O. Box 8795, Williamsburg , Virginia 23187-8795 , United States
| | - Daniel J Speer
- Department of Chemistry , William & Mary , P.O. Box 8795, Williamsburg , Virginia 23187-8795 , United States
| | - Brendon B Carnell
- Department of Chemistry , William & Mary , P.O. Box 8795, Williamsburg , Virginia 23187-8795 , United States
| | - Bethany L Kanter
- Department of Chemistry , William & Mary , P.O. Box 8795, Williamsburg , Virginia 23187-8795 , United States
| | - Robert D Pike
- Department of Chemistry , William & Mary , P.O. Box 8795, Williamsburg , Virginia 23187-8795 , United States
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Affiliation(s)
- Shanshan Gao
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Xing Xu
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Hao Tang
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
| | - Jia‐Qiang Wu
- School of Biotechnology and Health SciencesWuyi University, Jiangmen, P. R. China 529020
| | - Junfei Luo
- Materials Science and Chemical EngineeringNingbo University, Ningbo, P. R. China 315211
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Yasui K, Chatani N, Tobisu M. Rhodium-Catalyzed C–O Bond Alkynylation of Aryl Carbamates with Propargyl Alcohols. Org Lett 2018; 20:2108-2111. [DOI: 10.1021/acs.orglett.8b00674] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kosuke Yasui
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Mamoru Tobisu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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10
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Lukeman M, Simon H, Wan P, Wang YH. Photocyclization and Photoaddition Reactions of Arylphenols via Intermediate Quinone Methides. J Org Chem 2015; 80:11281-93. [PMID: 26496171 DOI: 10.1021/acs.joc.5b01580] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A series of five benzannelated derivatives of 2-phenylphenol were prepared, and their photochemistry was investigated. Two of these (3-phenyl-2-naphthol, 10, and 1-phenyl-2-naphthol, 11) were photoinert. For 2-(1-naphthyl)phenol (12) and 1-(1-naphthyl)-2-naphthol (13), ESPT took place to either the 2'-position or the 7'-position of the naphthalene ring to give quinone methides (QMs) that underwent either reverse proton transfer (RPT) or electrocyclic ring closure to give dihydrobenzoxanthenes. The intermediate QMs for 12 and 13 were detected and characterized by laser flash photolysis. For 2-(9-phenanthryl)phenol (14), ESPT took place either to the 5'-position to give a QM that underwent quantitative electrocyclic ring closure to give the corresponding benzoxanthene or to the 10'-position to give a QM that underwent RPT. If the solution contained methanol, the QM produced on ESPT to the 10'-position in 14 could be trapped as the photoaddition product. The compounds studied in this work demonstrate three possible reactions of QMs produced following ESPT to aromatic carbon atoms: (1) reverse proton transfer (RPT) to regenerate starting material; (2) addition of hydroxylic solvents to give the photoaddition product; and (3) electrocyclic ring closure to give benzoxanthene derivatives.
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Affiliation(s)
- Matthew Lukeman
- Department of Chemistry, Acadia University , 6 University Ave., Wolfville, NS, B4P 2R6, Canada
| | - Hilary Simon
- Department of Chemistry, Acadia University , 6 University Ave., Wolfville, NS, B4P 2R6, Canada
| | - Peter Wan
- Department of Chemistry, University of Victoria , Box 3065 Stn CSC, Victoria, BC, V8W 3V6, Canada
| | - Yu-Hsuan Wang
- Department of Chemistry, University of Victoria , Box 3065 Stn CSC, Victoria, BC, V8W 3V6, Canada
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Batchu H, Bhattacharyya S, Kant R, Batra S. Palladium-Catalyzed Chelation-Assisted Regioselective Oxidative Dehydrogenative Homocoupling/Ortho-Hydroxylation in N-Phenylpyrazoles. J Org Chem 2015; 80:7360-74. [DOI: 10.1021/acs.joc.5b00733] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | | | | | - Sanjay Batra
- Academy of Scientific and Innovative Research, New Delhi, 110025, India
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12
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Yamaguchi T, Yamaguchi E, Tada N, Itoh A. Directortho-Hydroxylation of 2-Phenylpyridines using Palladium(II) Chloride and Hydrogen Peroxide. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500061] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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13
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Ryan JH, Smith JA, Hyland C, Meyer AG, Williams CC, Bissember AC, Just J. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/b978-0-08-100024-3.00016-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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Sumaria CS, Türkmen YE, Rawal VH. Non-precious metals catalyze formal [4 + 2] cycloaddition reactions of 1,2-diazines and siloxyalkynes under ambient conditions. Org Lett 2014; 16:3236-9. [PMID: 24911346 PMCID: PMC4076001 DOI: 10.1021/ol501254h] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
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Copper(I)
and nickel(0) complexes catalyze the formal [4 + 2] cycloaddition
reactions of 1,2-diazines and siloxyalkynes, a reaction hitherto best
catalyzed by silver salts. These catalysts based on earth abundant
metals are not only competent, but the copper catalyst, in particular,
promotes cycloadditions of pyrido[2,3-d]pyridazine
and pyrido[3,4-d]pyridazine, enabling a new synthesis
of quinoline and isoquinoline derivatives, as well as the formal [2
+ 2] cycloaddition reaction of cyclohexenone with a siloxyalkyne.
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Affiliation(s)
- Chintan S Sumaria
- Department of Chemistry, The University of Chicago , 5735 South Ellis Avenue, Chicago, Illinois 60637, United States
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