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Xie F, Sun Y, Song H, Dong S, Zhao Q, Liu J, Miao Y. Ligand- and Substrate-Controlled Chemodivergent Pd-Catalyzed Annulations of Cyclic β-Keto Esters with 3-Aryl-2 H-azirines. Org Lett 2021; 24:268-273. [PMID: 34889615 DOI: 10.1021/acs.orglett.1c03933] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemodivergent Pd-catalyzed annulations of cyclic β-keto esters with 3-aryl-2H-azirines have been developed to provide rapid access to eight-membered ring lactams, bicyclic 3,4-dihydro-2H-pyrrole derivatives, and (E)-methyl [2-(2-oxocyclohexylidene)-2-phenylethyl]carbamates with high efficiency. The chemoselectivity can be determined by tuning the mono- or bisphosphine ligands as well as the substrate structure of cyclic β-keto esters.
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Affiliation(s)
- Fang Xie
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Yajun Sun
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Hanghang Song
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Shijie Dong
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Qin Zhao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Jiayi Liu
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
| | - Yu Miao
- School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, China
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Tsurugi H, Mashima K. Renaissance of Homogeneous Cerium Catalysts with Unique Ce(IV/III) Couple: Redox-Mediated Organic Transformations Involving Homolysis of Ce(IV)-Ligand Covalent Bonds. J Am Chem Soc 2021; 143:7879-7890. [PMID: 33904711 DOI: 10.1021/jacs.1c02889] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Recent advances in the catalytic application of cerium complexes were achieved through controlling the Ce(IV/III) redox couple. Although Ce(IV) complexes have been extensively investigated as stoichiometric oxidants in organic synthesis on the basis of their highly positive redox potentials, these complexes can be used as catalysts, not only by introducing supporting ligands around the coordination sphere of cerium, but also by taking advantage of the photoresponsive properties of Ce(IV) and Ce(III) species. Cerium is highly abundant, comparable to that of some first-row transition metals such as copper, nickel, and zinc. Cerium complexes are new and promising homogeneous catalyst candidates for a variety of organic transformations under mild reaction conditions. They are typically used to activate dioxygen to oxidize organic compounds and applied for organic radical generation using the photoresponsive character of Ce(IV) carboxylates and alkoxides as well as electronic transition of Ce(III), in which homolysis of Ce(IV)-ligand covalent bonds is an important step for the overall catalytic cycle. In this Perspective, we first review the early discovery of Ce(OAc)4-mediated oxidative transformations to emphasize the importance of Ce(IV)-OAc bond homolysis in various C-C bond-forming reactions and its relation to recent developments. We then focus on the fundamental importance of Ce(IV) reactivity involving thermal and photoassisted homolysis of the Ce(IV)-ligand covalent bond and the developments regarding Ce(IV/III) redox changes in catalytic reactions together with our recent findings on cerium-based catalysis.
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Affiliation(s)
- Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Speldrich J, Christoffers J. Mechanistic Insights into the Formation of δ‐Lactones by Cerium‐Catalyzed Aerobic Coupling of β‐Oxoesters with Enol Acetates. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001532] [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)
- Jean‐Marico Speldrich
- Institut für Chemie Carl von Ossietzky Universität Oldenburg 26111 Oldenburg Germany
| | - Jens Christoffers
- Institut für Chemie Carl von Ossietzky Universität Oldenburg 26111 Oldenburg Germany
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Geibel I, Dierks A, Müller T, Christoffers J. Formation of δ-Lactones with anti-Baeyer-Villiger Regiochemistry: Investigations into the Mechanism of the Cerium-Catalyzed Aerobic Coupling of β-Oxoesters with Enol Acetates. Chemistry 2017; 23:7245-7254. [PMID: 28230284 DOI: 10.1002/chem.201605468] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 02/03/2017] [Indexed: 11/06/2022]
Abstract
The cerium-catalyzed, aerobic coupling of β-oxoesters with enol acetates and dioxygen yields δ-lactones with a 1,4-diketone moiety. In contrast to the Baeyer-Villiger oxidation (BVO), where the higher substituted residue migrates; in the case of this oxidative C-C coupling reaction, the less substituted alkyl residue undergoes a 1,2-shift. An endoperoxidic oxycarbenium ion comparable to the Criegee intermediate in the BVO is proposed as a reaction intermediate and submitted to conformational analysis by computational methods. As a result, the inverse regiochemistry is explained by a primary stereoelectronic effect. A Hammett analysis using different donor- and acceptor-substituted enol esters provides support for the oxycarbenium ion being the crucial intermediate in the rate determining step of the conversion. An overall mechanism is suggested with a radical chain reaction for the formation of endoperoxides from β-oxoesters, enol acetates and dioxygen with a cerium(IV) species as initiating reagent.
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Affiliation(s)
- Irina Geibel
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111, Oldenburg, Germany
| | - Anna Dierks
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111, Oldenburg, Germany
| | - Thomas Müller
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111, Oldenburg, Germany
| | - Jens Christoffers
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111, Oldenburg, Germany
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Shabalin DA, Dvorko MY, Schmidt EY, Ushakov IA, Trofimov BA. Synthesis of 5-hydroxy-Δ1-pyrrolines from sec-alkyl aryl ketoximes and acetylene. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.088] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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6
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Geibel I, Dierks A, Schmidtmann M, Christoffers J. Formation of δ-Lactones by Cerium-Catalyzed, Baeyer-Villiger-Type Coupling of β-Oxoesters, Enol Acetates, and Dioxygen. J Org Chem 2016; 81:7790-8. [PMID: 27494288 DOI: 10.1021/acs.joc.6b01441] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Formation of δ-lactones is observed when cyclopentanone-2-carboxylates are converted in a cerium-catalyzed reaction with α-aryl vinyl acetates under oxidative conditions. The products of this transformation possess a 1,4-dicarbonyl constitution together with a quaternary carbon center. Atmospheric oxygen is the oxidant in this process, which can be regarded as ideal from economic and ecological points of view. Further advantages of this new C-C coupling and oxidation reaction are its operational simplicity and the application of nontoxic and inexpensive CeCl3·7 H2O as precatalyst. This so far unprecedented reaction is proposed to proceed via 1,2-dioxane derivatives, which decompose under formation of an oxycarbenium cation in a Baeyer-Villiger-type pathway. This mechanistic picture is supported by the observation that electron-rich (donor substituted or heteroaromatic) enol esters give higher yields than electron deficient congeners. Apart from 1,4-diketones and α-hydroxylated β-oxoesters formed as byproducts, the yields of δ-lactones range from moderate to good (up to 74%).
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Affiliation(s)
- Irina Geibel
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg , 26111 Oldenburg, Germany
| | - Anna Dierks
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg , 26111 Oldenburg, Germany
| | - Marc Schmidtmann
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg , 26111 Oldenburg, Germany
| | - Jens Christoffers
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg , 26111 Oldenburg, Germany
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7
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Geibel I, Christoffers J. Synthesis of 1,4-Diketones from β-Oxo Esters and Enol Acetates by Cerium-Catalyzed Oxidative Umpolung Reaction. European J Org Chem 2016. [PMCID: PMC4762319 DOI: 10.1002/ejoc.201600057] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Cyclic β‐oxo esters are converted with enol acetates in a cerium‐catalyzed, oxidative Umpolung reaction to furnish 1,4‐diketones with up to 95 % yield. Atmospheric oxygen is the oxidant in this process, which can be regarded as ideal from economic and ecological points of view. Further advantages of this new C–C coupling reaction are its operational simplicity and the application of nontoxic and inexpensive CeCl3·7H2O as precatalyst.
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Affiliation(s)
- Irina Geibel
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany, http://www.christoffers.chemie.uni‐oldenburg.de
| | - Jens Christoffers
- Institut für Chemie, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany, http://www.christoffers.chemie.uni‐oldenburg.de
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Wang H, Tang P, Zhou Q, Zhang D, Chen Z, Huang H, Qin Y. One-Pot Synthesis of Multisubstituted Butyrolactonimidates: Total Synthesis of (−)-Nephrosteranic Acid. J Org Chem 2015; 80:2494-502. [PMID: 25671631 DOI: 10.1021/jo5029166] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Huijing Wang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Pei Tang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Qilong Zhou
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Dan Zhang
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Zhitao Chen
- Innovative
Drug Research Centre and Bioengineering College, Chongqing University, Chongqing 401331, China
| | - Hongxiu Huang
- Key
Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry
of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yong Qin
- Key
Laboratory of Drug Targeting and Drug Delivery Systems of the Ministry
of Education, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
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Moloney MP, Causse J, Loubat C, Grandjean A. Sodium “Activation” of Silano-Phosphonate Modified Mesoporous TiO2Leading to Improved Rare-Earth Element Extraction. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201400027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Bubrin D, Niemeyer M. Formation of Novel T-Shaped NNN Ligands via Rare-Earth Metal-Mediated Si–H Activation. Inorg Chem 2014; 53:1269-71. [DOI: 10.1021/ic402941z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Denis Bubrin
- Institut
für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring
55, D-70569 Stuttgart, Germany
| | - Mark Niemeyer
- Institut für Anorganische und Analytische
Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10−14, D-55128 Mainz, Germany
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Terent'ev AO, Borisov DA, Vil’ VA, Dembitsky VM. Synthesis of five- and six-membered cyclic organic peroxides: Key transformations into peroxide ring-retaining products. Beilstein J Org Chem 2014; 10:34-114. [PMID: 24454562 PMCID: PMC3896255 DOI: 10.3762/bjoc.10.6] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Accepted: 11/16/2013] [Indexed: 12/16/2022] Open
Abstract
The present review describes the current status of synthetic five and six-membered cyclic peroxides such as 1,2-dioxolanes, 1,2,4-trioxolanes (ozonides), 1,2-dioxanes, 1,2-dioxenes, 1,2,4-trioxanes, and 1,2,4,5-tetraoxanes. The literature from 2000 onwards is surveyed to provide an update on synthesis of cyclic peroxides. The indicated period of time is, on the whole, characterized by the development of new efficient and scale-up methods for the preparation of these cyclic compounds. It was shown that cyclic peroxides remain unchanged throughout the course of a wide range of fundamental organic reactions. Due to these properties, the molecular structures can be greatly modified to give peroxide ring-retaining products. The chemistry of cyclic peroxides has attracted considerable attention, because these compounds are used in medicine for the design of antimalarial, antihelminthic, and antitumor agents.
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Key Words
- 1,2,4,5-tetraoxanes
- 1,2,4-trioxanes
- 1,2,4-trioxolanes
- 1,2-dioxanes
- 1,2-dioxenes
- 1,2-dioxolanes
- cyclic peroxides
- ozonides
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Affiliation(s)
- Alexander O Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Dmitry A Borisov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Vera A Vil’
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Valery M Dembitsky
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
- Institute for Drug Research, P.O. Box 12065, Hebrew University, Jerusalem 91120, Israel
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Polyethylene Glycols as Efficient Media for Decarboxylative Nitration of α,β-Unsaturated Aromatic Carboxylic Acids by Ceric Ammonium Nitrate in Acetonitrile Medium: A Kinetic and Mechanistic Study. ADVANCES IN CHEMICAL PHYSICS 2013. [DOI: 10.1155/2013/146585] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Polyethylene glycols (PEGs) were found to be efficient media for decarboxylative nitration of α,β-unsaturated aromatic carboxylic acids by ceric ammonium nitrate (CAN) in acetonitrile to give β-nitrostyrene derivatives. Kinetics of the reaction exhibited second order kinetics with a first order dependence on [CAN] and [substrate]. Reactions were too sluggish to be studied in the absence of PEG; therefore detailed kinetics were not taken up. Reaction times were reduced from 24 hrs to few hours. The catalytic activity was found to be in the increasing order PEG-300 > PEG-400 > PEG-600 > PEG-200. Mechanism of PEG-mediated reactions was explained by Menger-Portnoy's scheme as applied in micellar kinetics.
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Xia L, Lee YR. A novel and efficient synthesis of diverse dihydronaphtho[1,2-b]furans using the ceric ammonium nitrate-catalyzed formal [3 + 2] cycloaddition of 1,4-naphthoquinones to olefins and its application to furomollugin. Org Biomol Chem 2013; 11:6097-107. [DOI: 10.1039/c3ob40977e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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14
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Miyamura H, Kobayashi S. α-Hydroxylation of 1,3-Dicarbonyl Compounds Catalyzed by Polymer-incarcerated Gold Nanoclusters with Molecular Oxygen. CHEM LETT 2012. [DOI: 10.1246/cl.2012.976] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Shū Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo
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Palframan MJ, Kociok-Köhn G, Lewis SE. Photooxygenation of a Microbial Arene Oxidation Product and Regioselective Kornblum-DeLaMare Rearrangement: Total Synthesis of Zeylenols and Zeylenones. Chemistry 2012; 18:4766-74. [DOI: 10.1002/chem.201104035] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Indexed: 11/11/2022]
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Chen GY, Huang H, Ye JL, Wang AE, Huang HY, Zhang HK, Huang PQ. Enantioselective Syntheses of Rigidiusculamides A and B: Revision of the Relative Stereochemistry of Rigidiusculamide A. Chem Asian J 2012; 7:504-18. [DOI: 10.1002/asia.201100809] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Indexed: 12/12/2022]
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Abstract
Through a biomimetic pathway, hyperolactone D, 4-hydroxyhyperolactone D, and hyperolactone C were synthesized from methyl acetoacetate via Weiler's dianion method, asymmetric allylic alkylation, biomimetic lactonization, oxidation, and cyclization. The stereochemistry of the quaternary carbon was controlled efficiently by Palladium-catalyzed asymmetric allylic alkylation. This strategy was also used for the synthesis of hyperolactone B.
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Affiliation(s)
- Yingying Wu
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, 222 Tianshui South Road, Lanzhou, Gansu 730000, China
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Rössle M, Christoffers J. The source of oxygen in cerium-catalyzed α-hydroxylation of β-dicarbonyl compounds. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.09.024] [Citation(s) in RCA: 15] [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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Deleersnyder K, Schaltin S, Fransaer J, Binnemans K, Parac-Vogt TN. Ceric ammonium nitrate (CAN) as oxidizing or nitrating reagent for organic reactions in ionic liquids. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.05.093] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Pflantz R, Tielmann P, Rössle M, Hoenke C, Christoffers J. Eight-Membered-Ring Lactams – New Scaffolds for Combinatorial Chemistry Prepared by Ring-Expansion of 1,4-Diketones with Primary Amines. European J Org Chem 2007. [DOI: 10.1002/ejoc.200700263] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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