1
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Del Gobbo J, Santini C, Dolmella A, Li Z, Caviglia M, Pellei M. New Copper Complexes with N,O-Donor Ligands Based on Pyrazole Moieties Supported by 3-Substituted Acetylacetone Scaffolds. Molecules 2024; 29:621. [PMID: 38338366 PMCID: PMC10856362 DOI: 10.3390/molecules29030621] [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: 12/31/2023] [Revised: 01/20/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
The new 3-monosubstituted acetylacetone ligands, 3-(phenyl(1H-pyrazol-1-yl)methyl)pentane-2,4-dione (HLacPz) and 3-((3,5-dimethyl-1H-pyrazol-1-yl)(phenyl)methyl)pentane-2,4-dione (HLacPzMe), were synthesized and used as supporting ligands for new copper(II) and copper(I) phosphane complexes of the general formulae [Cu(HLacX)2(LacX)2] and [Cu(PPh3)2(HLacX)]PF6 (X = Pz (pyrazole) or PzMe (3,5-dimethylpyrazole)), respectively. In the syntheses of the Cu(I) complexes, the triphenylphosphine coligand (PPh3) was used to stabilize copper in the +1 oxidation state, avoiding oxidation to Cu(II). All compounds were characterized by CHN analysis, 1H-NMR, 13C-NMR, FT-IR spectroscopy, and electrospray ionization mass spectrometry (ESI-MS). The ligands HLacPz (1) and HLacPzMe (2) and the copper complex [Cu(PPh3)2(HLacPz)]PF6 (3) were also characterized by X-ray crystallography. The reactivity of these new compounds was investigated and the new compounds 4-phenyl-4-(1H-pyrazol-1-yl)butan-2-one (7) and 4-(3,5-dimethyl-1H-pyrazol-1-yl)-4-phenylbutan-2-one (8) were obtained in basic conditions via the retro-Claisen reaction of related 3-monosubstituted acetylacetone, providing efficient access to synthetically useful ketone compounds. Compound 8 was also characterized by X-ray crystallography.
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Affiliation(s)
- Jo’ Del Gobbo
- School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri (ChIP), Camerino, 62032 Macerata, Italy; (J.D.G.); (C.S.); (Z.L.); (M.C.)
| | - Carlo Santini
- School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri (ChIP), Camerino, 62032 Macerata, Italy; (J.D.G.); (C.S.); (Z.L.); (M.C.)
| | - Alessandro Dolmella
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via Marzolo 5, 35131 Padova, Italy
| | - Zhenzhen Li
- School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri (ChIP), Camerino, 62032 Macerata, Italy; (J.D.G.); (C.S.); (Z.L.); (M.C.)
| | - Miriam Caviglia
- School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri (ChIP), Camerino, 62032 Macerata, Italy; (J.D.G.); (C.S.); (Z.L.); (M.C.)
| | - Maura Pellei
- School of Science and Technology, Chemistry Division, University of Camerino, Via Madonna delle Carceri (ChIP), Camerino, 62032 Macerata, Italy; (J.D.G.); (C.S.); (Z.L.); (M.C.)
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2
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Liu JH, Lv XJ, Liu YK. Asymmetric Retro-Claisen Reaction Catalyzed by Chiral Aza-Bisoxazoline-Zn(II) Complex: Enantioselective Synthesis of α-Arylated Ketones. Org Lett 2023; 25:1706-1710. [PMID: 36881495 DOI: 10.1021/acs.orglett.3c00372] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
An asymmetric retro-Claisen reaction of α-monosubstituted β-diketones and quinones (or quinone imine) has been developed under the catalysis of a chiral aza-bisoxazoline-Zn(II) complex. The reaction proceeds via a sequence of conjugate addition, arylation, hemiketal anion-initiated C-C bond cleavage, and enantioselective protonation of enolate to provide various functionalized α-arylated ketones bearing a tertiary stereogenic center with high enantioselectivities. Notably, biologically important benzofuran and γ-butyrolactone derivatives could be synthesized by application of the developed protocol.
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Affiliation(s)
- Jia-Hui Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Xue-Jiao Lv
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Yan-Kai Liu
- Molecular Synthesis Center & Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China.,Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
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3
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Ishihara R, Okamura K, Yoshimura Y, Ueno S. Diamine‐Promoted Deacylation of 2‐Alkyl‐1,3‐Diketones for the Facile Synthesis of Ketones. ChemistrySelect 2022. [DOI: 10.1002/slct.202202717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rei Ishihara
- Department of Applied Chemistry Graduate School of Engineering Tokyo University of Technology 1404-1 Katakura, Hachioji Tokyo 192–0982 Japan
| | - Kota Okamura
- Department of Applied Chemistry Graduate School of Engineering Tokyo University of Technology 1404-1 Katakura, Hachioji Tokyo 192–0982 Japan
| | - Yuki Yoshimura
- Department of Applied Chemistry Graduate School of Engineering Tokyo University of Technology 1404-1 Katakura, Hachioji Tokyo 192–0982 Japan
| | - Satoshi Ueno
- Department of Applied Chemistry Graduate School of Engineering Tokyo University of Technology 1404-1 Katakura, Hachioji Tokyo 192–0982 Japan
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4
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Su F, Zhao Q, Wang M, Zhao M, Ren Y, Zhu B, Chen H, Lai M, Zhao M. A Convenient Esterification of
N
‐Heteroarene Methanols
via
C–CN Bond Cleavage of Benzoyl Cyanides as Acylating Sources. ChemistrySelect 2022. [DOI: 10.1002/slct.202104272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fangyao Su
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Qianrui Zhao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Mengzhuo Wang
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Mingzhang Zhao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Yihe Ren
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Binghan Zhu
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Haoran Chen
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Miao Lai
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
| | - Mingqin Zhao
- Flavors and Fragrance Engineering & Technology Research Center of Henan Province College of Tobacco Science Henan Agricultural University 95 Wenhua Road Zhengzhou 450002 P. R. China
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5
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Lai M, Su F, Hu J, Wang M, Zhao M, Zhang G. Synthesis of N-Heteroarenemethyl Esters via C–C Bond Cleavage of Acyl Cyanides Under Transition Metal-Free Conditions. Front Chem 2022; 9:822625. [PMID: 35155384 PMCID: PMC8828493 DOI: 10.3389/fchem.2021.822625] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 12/15/2021] [Indexed: 01/24/2023] Open
Abstract
A practical method to synthesize N-heteroaryl esters from N-heteroaryl methanols with acyl cyanides via C–C bond cleavage without using any transition metal is demonstrated here. The use of Na2CO3/15-crown-5 couple enables access to a series of N-heteroaryl esters in high efficiency. This protocol is operationally simple and highly environmentally benign producing only cyanides as byproducts.
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6
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Rammurthy B, Peraka S, Vasu A, Krishna Sai G, Divya Rohini Y, Narender N. Metal‐free Catalytic Esterification of Aryl Alkyl Ketones with Alcohols via Free‐radical Mediated C(sp
3
)−H Bond Oxygenation. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202000691] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Banothu Rammurthy
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Swamy Peraka
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Amrutham Vasu
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Gajula Krishna Sai
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Yennamaneni Divya Rohini
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
| | - Nama Narender
- Academy of Scientific and Innovative Research, CSIR-HRDG Campus, Sector 19, Kamla Nehru Nagar Ghaziabad 201002, UP India
- C & FC Division CSIR-Indian Institute of Chemical Technology Hyderabad 500007 Telangana India
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7
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Chaudhary B, Kulkarni N, Sharma S. Rhodium(iii)-catalyzed synthesis of 3-trifluoromethylindanones from N-methoxybenzamides via C–H activation and Claisen/retro-Claisen reaction. Org Chem Front 2020. [DOI: 10.1039/d0qo00330a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient synthesis of 3-trifluoromethylindanones via C–H annulation of N-methoxybenzamides with β-trifluoromethyl-α,β-unsaturated ketones under Rh(iii)-catalysis is described.
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Affiliation(s)
- Bharatkumar Chaudhary
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Ahmedabad (NIPER-A)
- Gandhinagar
- India
| | - Neeraj Kulkarni
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Ahmedabad (NIPER-A)
- Gandhinagar
- India
| | - Satyasheel Sharma
- Department of Medicinal Chemistry
- National Institute of Pharmaceutical Education and Research
- Ahmedabad (NIPER-A)
- Gandhinagar
- India
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8
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Han Y, Zhang L, Luo S. Asymmetric Retro-Claisen Reaction by Synergistic Chiral Primary Amine/Palladium Catalysis. Org Lett 2019; 21:7258-7261. [PMID: 31487188 DOI: 10.1021/acs.orglett.9b02491] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We described herein a chiral primary amine/palladium catalyzed asymmetric retro-Claisen reaction of β-diketones with salicylic carbonates. A series of chiral α-alkylated ketones and macrolides were obtained with good yields and excellent enantioselectivities upon a sequence of decarboxylative benzylation, retro-Claisen cleavage, and enamine protonation. This strategy features broad substrate scope, mild conditions, as well as high atom economy with salicylic carbonates as the o-quinone methide precursors.
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Affiliation(s)
- Yanfang Han
- Key Laboratory of Molecular Recognition and Function , Institute of Chemistry, Chinese Academy of Sciences , Beijing 100190 , China.,School of Chemical Science , University of Chinese Academy of Sciences , Beijing 100490 , China
| | - Long Zhang
- Center of Basic Molecular Science, Department of Chemistry , Tsinghua University , Beijing , 100084 , China
| | - Sanzhong Luo
- Center of Basic Molecular Science, Department of Chemistry , Tsinghua University , Beijing , 100084 , China
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9
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Liang T, Zhao H, Gong L, Jiang H, Zhang M. Direct Access to Functionalized Indoles via Single Electron Oxidation Induced Coupling of Diarylamines with 1,3-Dicarbonyl Compounds. Org Lett 2019; 21:6736-6740. [DOI: 10.1021/acs.orglett.9b02349] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Taoyuan Liang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, P.R. China
| | - He Zhao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, P.R. China
| | - Lingzhen Gong
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, P.R. China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, P.R. China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Road 381, Guangzhou 510641, P.R. China
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10
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Meesakul P, Richardson C, Pyne SG, Laphookhieo S. α-Glucosidase Inhibitory Flavonoids and Oxepinones from the Leaf and Twig Extracts of Desmos cochinchinensis. JOURNAL OF NATURAL PRODUCTS 2019; 82:741-747. [PMID: 30835120 DOI: 10.1021/acs.jnatprod.8b00581] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Four new flavonoids (1-4), a new benzyl benzoate derivative (5), five new oxepinones (6-10), and 14 known compounds (11-24) were isolated from the leaf and twig extracts of Desmos cochinchinensis. Their structures were established by spectroscopic methods. The structure of 1 was also confirmed by X-ray diffraction data. The absolute configurations of 3, 4, and 6-10 were determined from comparisons of their ECD spectra with those of relevant reported compounds. Compounds 1, 2, 6, 8, 10, 12-15, and 17 showed α-glucosidase inhibitory activities with IC50 values ranging from 0.2 to 4.9 μM.
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Affiliation(s)
- Pornphimol Meesakul
- School of Chemistry and Molecular Biosciences , University of Wollongong , Wollongong , New South Wales 2522 , Australia
| | - Christopher Richardson
- School of Chemistry and Molecular Biosciences , University of Wollongong , Wollongong , New South Wales 2522 , Australia
| | - Stephen G Pyne
- School of Chemistry and Molecular Biosciences , University of Wollongong , Wollongong , New South Wales 2522 , Australia
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11
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Karthik S, Muthuvel K, Gandhi T. Base-Promoted Amidation and Esterification of Imidazolium Salts via Acyl C–C bond Cleavage: Access to Aromatic Amides and Esters. J Org Chem 2018; 84:738-751. [DOI: 10.1021/acs.joc.8b02567] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Shanmugam Karthik
- Department of Chemistry, School of Advanced Sciences, VIT, Vellore, Tamil Nadu 632014, India
| | - Karthick Muthuvel
- Department of Chemistry, School of Advanced Sciences, VIT, Vellore, Tamil Nadu 632014, India
| | - Thirumanavelan Gandhi
- Department of Chemistry, School of Advanced Sciences, VIT, Vellore, Tamil Nadu 632014, India
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12
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Abad Galán L, Sobolev AN, Zysman-Colman E, Ogden MI, Massi M. Lanthanoid complexes supported by retro-Claisen condensation products of β-triketonates. Dalton Trans 2018; 47:17469-17478. [PMID: 30500011 DOI: 10.1039/c8dt03585g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
β-Triketonates have been recently used as chelating ligands for lanthanoid ions, presenting unique structures varying from polynuclear assemblies to polymers. In an effort to overcome low solubility of the complexes of tribenzoylmethane, four β-triketones with higher lipophilicity were synthesised. Complexation reactions were performed for each of these molecules using different alkaline bases in alcoholic media. X-ray diffraction studies suggested that the ligands were undergoing decomposition under the reaction conditions. This is proposed to be caused by in situ retro-Claisen condensation reactions, consistent with two examples that have been reported previously. The lability of the lanthanoid cations in the presence of a varying set of potential ligands gave rise to structures where one, two, or three of the molecules involved in the retro-Claisen condensation reaction were linked to the lanthanoid centres. These results, along with measurements of ligand decomposition in the presence of base alone, suggest the solvent used will modulate the impact of the retro-Claisen condensation in these complexes.
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Affiliation(s)
- Laura Abad Galán
- School of Molecular and Life Sciences and Curtin Institute for Functional Molecules and Interfaces, Curtin University, Kent Street, Bentley 6102, WA, Australia.
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13
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Yu TY, Zheng ZJ, Dang TT, Zhang FX, Wei H. Synthesis of Acyl Azides from 1,3-Diketones via Oxidative Cleavage of Two C–C Bonds. J Org Chem 2018; 83:10589-10594. [DOI: 10.1021/acs.joc.8b01417] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tian-Yang Yu
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P.R. China
| | - Zhao-Jing Zheng
- State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P.R. China
| | - Tong-Tong Dang
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P.R. China
| | - Fang-Xia Zhang
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P.R. China
| | - Hao Wei
- Key Laboratory of Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi’an 710127, P.R. China
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14
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Hussein MA, Huynh VT, Hommelsheim R, Koenigs RM, Nguyen TV. An efficient method for retro-Claisen-type C–C bond cleavage of diketones with tropylium catalyst. Chem Commun (Camb) 2018; 54:12970-12973. [DOI: 10.1039/c8cc07329e] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report a new convenient and efficient method utilizing the tropylium ion as a mild and environmentally friendly organocatalyst to mediate retro-Claisen-type reactions.
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Affiliation(s)
- M. A. Hussein
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
| | - V. T. Huynh
- School of Chemistry
- University of Sydney
- Australia
| | - R. Hommelsheim
- Institute of Organic Chemistry
- RWTH Aachen University
- Germany
| | - R. M. Koenigs
- Institute of Organic Chemistry
- RWTH Aachen University
- Germany
| | - T. V. Nguyen
- School of Chemistry
- University of New South Wales
- Sydney
- Australia
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15
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Wang CS, Roisnel T, Dixneuf PH, Soulé JF. Synthesis of 2-Pyridinemethyl Ester Derivatives from Aldehydes and 2-Alkylheterocycle N-Oxides via Copper-Catalyzed Tandem Oxidative Coupling–Rearrangement. Org Lett 2017; 19:6720-6723. [DOI: 10.1021/acs.orglett.7b03446] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Chang-Sheng Wang
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques: Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
| | - Thierry Roisnel
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques: Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
| | - Pierre H. Dixneuf
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques: Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
| | - Jean-François Soulé
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes “Organométalliques: Matériaux et Catalyse”, Campus de Beaulieu, 35042 Rennes, France
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16
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Abstract
The first deacylative allylic C-H alkylation has been established by employing the palladium-catalyzed allylic C-H activation and decarboxylative nucleophile generation. A wide scope of nucleophiles are tolerated and densely functionalized alkylation products turn out to be furnished in moderate to good yield. More importantly, this strategy provides an alternative method for the allylic C-H alkylation with less stabilized carbon nucleophiles, and can be further expanded to the synthesis of unconjugated enynes.
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Affiliation(s)
- Xiao-Le Zhou
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei 230026, China
| | - Lei Ren
- Anhui Therapy Pharmaceutical Co., LTD , Suzhou 234000, China
| | - Pu-Sheng Wang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China , Hefei 230026, China
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17
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Häring AP, Biallas P, Kirsch SF. An Unconventional Reaction of 2,2-Diazido Acylacetates with Amines. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601625] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Andreas P. Häring
- Organic Chemistry; Bergische Universität Wuppertal; Gaußstraße 20 42119 Wuppertal Germany
| | - Phillip Biallas
- Organic Chemistry; Bergische Universität Wuppertal; Gaußstraße 20 42119 Wuppertal Germany
| | - Stefan F. Kirsch
- Organic Chemistry; Bergische Universität Wuppertal; Gaußstraße 20 42119 Wuppertal Germany
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18
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Visbal R, Laguna A, Gimeno MC. Highly Efficient Catalysis of Retro-Claisen Reactions: From a Quinone Derivative to Functionalized Imidazolium Salts. Chemistry 2016; 22:4189-95. [PMID: 26864976 DOI: 10.1002/chem.201505095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Indexed: 11/12/2022]
Abstract
A new and efficient method for the preparation of several imidazolium salts containing an ester group in the C4 position of the aromatic ring through a retro-Claisen reaction pathway between a quinone derivative and several alcohols is described. This new organic transformation proceeds in the absence of a catalyst, but it is greatly catalyzed by different Lewis acids, especially with AgOAc at a very low catalyst loading and in very short reaction times. The process takes place by the nucleophilic attack of the carbonyl groups by the alcohol functionality, thus promoting a double C-C bond cleavage and C-H and C-O bond formation. This reaction represents the first example of this type between a quinone derivative and alcohols.
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Affiliation(s)
- Renso Visbal
- Departamento of Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50005, Zaragoza, Spain.,Programa de Ingeniería Industrial, Facultad de Ingeniería, Corporación Universidad de la Costa (CUC), Calle 58, #55-66, 080001, Barranquilla, Colombia
| | - Antonio Laguna
- Departamento of Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50005, Zaragoza, Spain
| | - M Concepción Gimeno
- Departamento of Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50005, Zaragoza, Spain.
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19
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Xiong B, Zhang S, Jiang H, Zhang M. Hydrogen-Transfer-Mediated Direct β-Alkylation of Aryl-1,8-naphthyridines with Alcohols under Transition Metal Catalyst Free Conditions. Org Lett 2016; 18:724-7. [DOI: 10.1021/acs.orglett.5b03699] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Biao Xiong
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
| | - Shudi Zhang
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
| | - Huanfeng Jiang
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
| | - Min Zhang
- School of Chemistry & Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People’s Republic of China
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20
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Cai GX, Wen J, Lai TT, Xie D, Zhou CH. Sequential Michael addition/retro-Claisen condensation of aromatic β-diketones with α,β-unsaturated esters: an approach to obtain 1,5-ketoesters. Org Biomol Chem 2016; 14:2390-4. [DOI: 10.1039/c5ob02570b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A K2CO3-catalyzed one-pot protocol involving sequential C–C bond formation and cleavage of aromatic β-diketones with α,β-unsaturated esters is developed to obtain 1,5-ketoesters, proceeding smoothly under mild conditions in up to 98% isolated yield.
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Affiliation(s)
- Gui-Xin Cai
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Jing Wen
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Ting-Ting Lai
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Dan Xie
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
| | - Cheng-He Zhou
- Key Laboratory of Applied Chemistry of Chongqing Municipality
- Institute of Bioorganic & Medicinal Chemistry
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
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21
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Yue H, Yu H, Liu S, Xu C. Ag–Cu nanoparticles as efficient catalysts for transesterification of β-keto esters under acid/base-free conditions. RSC Adv 2016. [DOI: 10.1039/c6ra00467a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
For the first time transesterification of β-keto esters, conventional acid- or base-catalyzed reactions, has been catalyzed by Ag–Cu bimetallic nanoparticles with high activity.
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Affiliation(s)
- Hongmei Yue
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University)
- Ministry of Education
- Xi'an 710119
- PR China
- School of Chemistry and Chemical Engineering
| | - Hao Yu
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University)
- Ministry of Education
- Xi'an 710119
- PR China
- School of Chemistry and Chemical Engineering
| | - Sheng Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University)
- Ministry of Education
- Xi'an 710119
- PR China
- School of Chemistry and Chemical Engineering
| | - Chunli Xu
- Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University)
- Ministry of Education
- Xi'an 710119
- PR China
- School of Chemistry and Chemical Engineering
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22
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Guo R, Zhu C, Sheng Z, Li Y, Yin W, Chu C. Silica sulfuric acid mediated acylation of amines with 1,3-diketones via CC bond cleavage under solvent-free conditions. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.094] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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23
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Gao WC, Zhao JJ, Hu F, Chang HH, Li X, Wei WL. I2-mediated sulfonylation and Na2SO3-mediated deacylation: a general protocol for the synthesis of β-keto sulfones and β-dicarbonyl sulfones. RSC Adv 2015. [DOI: 10.1039/c5ra03826j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A general method for constructing both β-keto sulfones and β-dicarbonyl sulfones has been developed.
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Affiliation(s)
- Wen-Chao Gao
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan
- P. R. China
| | - Jin-Jin Zhao
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan
- P. R. China
| | - Fei Hu
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan
- P. R. China
| | - Hong-Hong Chang
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan
- P. R. China
| | - Xing Li
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan
- P. R. China
| | - Wen-Long Wei
- College of Chemistry and Chemical Engineering
- Taiyuan University of Technology
- Taiyuan
- P. R. China
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24
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Yadav DKT, Bhanage BM. Base-catalyzed synthesis of amides and imines via C–C and CC bond cleavage. RSC Adv 2015. [DOI: 10.1039/c4ra14234a] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
A simple and efficient protocol has been developed for amides and imines synthesis from 1,3-dicarbonyls and α,β-unsaturated ketones respectively with N-arylureas in the presence of inexpensive and easily available KOH base under solvent free condition.
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25
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Chen M, Zhang M, Xiong B, Tan Z, Lv W, Jiang H. A novel ruthenium-catalyzed dehydrogenative synthesis of 2-arylquinazolines from 2-aminoaryl methanols and benzonitriles. Org Lett 2014; 16:6028-31. [PMID: 25381883 DOI: 10.1021/ol503052s] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
By employing a commercially available Ru3(CO)12/Xantphos/t-BuOK catalyst system, a novel and straightforward ruthenium-catalyzed dehydrogenative synthesis of 2-arylquinazolines has been demonstrated. A series of 2-aminoaryl methanols were efficiently converted in combination with different types of benzonitriles into various desired products in moderate to good yields upon isolation. The synthetic protocol proceeds with the advantages of operational simplicity, high atom efficiency, broad substrate scope, and no need for the use of less environmentally benign halogenated reagents, offering an important basis for accessing 2-arylquinazolines.
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Affiliation(s)
- Mengmeng Chen
- School of Chemistry & Chemical Engineering, South China University of Technology , Guangzhou 510641, People's Republic of China
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26
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Lee H, Jun CH. Microwave-assisted, tetrabutylammonium hydroxide catalysed 1,4-addition of water to α,β-unsaturated ketones and α,β-ynones in aqueous solution. RSC Adv 2014. [DOI: 10.1039/c4ra09932j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Microwave-assisted, tetrabutylammonium hydroxide catalysed 1,4-addition reactions of water to α,β-unsaturated ketones and α,β-ynones take place efficiently in water.
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Affiliation(s)
- Hyejeong Lee
- Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
| | - Chul-Ho Jun
- Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
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