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Canote CA, Kilyanek SM. Reactivity of metal dioxo complexes. Dalton Trans 2024; 53:4874-4889. [PMID: 38379444 DOI: 10.1039/d3dt04390h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Metal dioxo chemistry and its diverse reactivity are presented with an emphasis on the mechanisms of reactivity. Work from approximately the last decade is surveyed and organized by metal. In particular, the chemistry of cis-dioxo metal complexes is discussed at length. Reactions are grouped by generic type, including addition across a metal oxo bond, oxygen atom transfer, and radical atom transfer reactions. Attention is given to advances in deoxygenation chemistry, oxidation chemistry, and reductive transformations.
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Affiliation(s)
- Cody A Canote
- Department of Chemistry and Biochemistry, 1 University of Arkansas, Fayetteville, AR 72701, USA.
| | - Stefan M Kilyanek
- Department of Chemistry and Biochemistry, 1 University of Arkansas, Fayetteville, AR 72701, USA.
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Zha Q, Wu Y. Enantioselective Total Synthesis of 10-Desoxy Analogue of a Previously Reported Natural Peroxyguaidiol. J Org Chem 2022; 87:10114-10137. [PMID: 35796860 DOI: 10.1021/acs.joc.2c01082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Described herein is an enantioselective synthesis of an analogue of a previously reported guaiane endoperoxide isolated from aerial parts of Croton arboreous. The polycyclic framework of the target structure was constructed with the C-7 stereogenic center derived from L-(-)-carvone and other stereogenic centers installed via substrate chirality-induced asymmetric reactions, starting with the synthesis of the seven-membered ring through regioselective enolization of carvone, ring-expansion, and installation of a conjugated C═C bond. Further functionalization was then achieved through regioselective enolization, triflation, and installation of an isopropenyl group. During the synthesis, some exceptions to the well-known rules of "thermodynamic control" and "kinetic control" in enolization of asymmetric cyclic ketones were observed. In construction of the bridged five-membered and endoperoxy rings, a peroxycarbenium [3 + 2] cycloaddition reaction with alkenes was carried out with several alkenes-silyl-gem-dihydroperoxides of different relative configurations. However, no expected [3 + 2] products were observed. Finally, the five-membered ring was smoothly installed through an intramolecular Darzens reaction, and the peroxy functionality was introduced via a carbon-centered radical-mediated reaction with triplet oxygen, followed by an intramolecular etherification under acidic conditions. Comparison of the 1H and 13C NMR spectra of the synthetic analogue and the natural product revealed that the latter was definitely not an endoperoxide.
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Affiliation(s)
- Qinghong Zha
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yikang Wu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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Zha Q, An X, Xu ZJ, Han WB, Wu Y. A Low-Cost and Scalable Synthesis of a Cyclohexanone-Related Bifunctional Building Block. ACS OMEGA 2021; 6:30811-30817. [PMID: 34805709 PMCID: PMC8600635 DOI: 10.1021/acsomega.1c05159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
A practical route to 2-(2-(2-methyl-1,3-dioxolan-2-yl)ethyl)cyclohexan-1-one was developed, featuring the use of inexpensive starting materials/reagents and readily attainable reaction conditions. The overall transformation was achieved in 53% yield with one chromatographic purification via NaOH-mediated aldol condensation, ethylene glycol protection of the ketone group in the presence of HC(OEt)3/concd HCl, saturation of the C=C bond and the benzene ring with Al-Ni alloy in aqueous KOH, and oxidation of the intermediate cyclohexanol with aqueous NaClO/TEMPO/KBr.
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Chen C, Tang LH, Zhou WY, Jia AQ, Zhang QF. Photocatalytic Properties and Electronic Effects of Incorporation Bis(acetylacetonato) Ruthenium(II/III) Complexes with Bidentate Nitrogen and Sulfur Ancillaries. ChemistrySelect 2021. [DOI: 10.1002/slct.202102846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Chong Chen
- Institute of Molecular Engineering and Applied Chemistry Anhui University of Technology Ma'anshan Anhui 243002 P. R. China
| | - Li H. Tang
- Institute of Molecular Engineering and Applied Chemistry Anhui University of Technology Ma'anshan Anhui 243002 P. R. China
| | - Wen Y. Zhou
- Institute of Molecular Engineering and Applied Chemistry Anhui University of Technology Ma'anshan Anhui 243002 P. R. China
| | - Ai Q. Jia
- Institute of Molecular Engineering and Applied Chemistry Anhui University of Technology Ma'anshan Anhui 243002 P. R. China
| | - Qian F. Zhang
- Institute of Molecular Engineering and Applied Chemistry Anhui University of Technology Ma'anshan Anhui 243002 P. R. China
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Bordier C, Escande V, Darcel C. Past and current routes to β-hydroperoxy alcohols: A functional group with high potential in organic synthesis. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Louvel D, De Dios Miguel T, Duc Vu N, Duguet N. The Chemistry of β‐Hydroxy Hydroperoxides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100343] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Dan Louvel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Thomas De Dios Miguel
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Nam Duc Vu
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
| | - Nicolas Duguet
- Univ Lyon, Université Claude Bernard Lyon1, CNRS, INSA, CPE-Lyon Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, ICBMS UMR 5246, Equipe CAtalyse, SYnthèse et ENvironnement (CASYEN), Bâtiment Lederer 1 rue Victor Grignard 69100 Villeurbanne cedex France
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Hubbell AK, Coates GW. Nucleophilic Transformations of Lewis Acid-Activated Disubstituted Epoxides with Catalyst-Controlled Regioselectivity. J Org Chem 2020; 85:13391-13414. [PMID: 33076663 DOI: 10.1021/acs.joc.0c01691] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Due to their inherent ring strain and electrophilicity, epoxides are highly attractive building blocks for fundamental organic reactions. However, controlling the regioselectivity of disubstituted epoxide transformations is often particularly challenging. Most Lewis acid-mediated processes take advantage of intrinsic steric or electronic substrate bias to influence the site of nucleophilic attack. Therefore, the scope of many of these systems is frequently quite limited. Recent efforts to generate catalysts that can overcome substrate bias have expanded the synthetic utility of these well-known reactions. In this Perspective, we highlight various regioselective transformations of disubstituted epoxides, emphasizing those that have inspired the production of challenging, catalyst-controlled processes.
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Affiliation(s)
- Aran K Hubbell
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
| | - Geoffrey W Coates
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301, United States
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Wang XT, Han WB, Chen HJ, Zha Q, Wu Y. Regio- and Stereoselective Addition of HO/OOH to Allylic Alcohols. J Org Chem 2020; 85:10007-10021. [PMID: 32790359 DOI: 10.1021/acs.joc.0c01280] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A range of allylic alcohols are shown to readily react with ethereal H2O2 in the presence of catalytic amounts of Na2MoO4-gly or MoO2(acac)2, affording the C═C trans hydroxylation-hydroperoxylation products in good yields with high regio- and stereoselectivity. Use of enantiomers of cyclic substrates resulted in corresponding enantiopure diol-tert-hydroperoxides. The possibility of further conversion of the diol-tert-hydroperoxides into triols or linear building blocks with an isolated tert-peroxy group containing a quaternary center is also exemplified.
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Affiliation(s)
- Xiao-Tao Wang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry and the University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 China
| | - Wei-Bo Han
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry and the University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 China
| | - Hui-Jun Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry and the University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 China
| | - Qinghong Zha
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry and the University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 China
| | - Yikang Wu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry and the University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032 China
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