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Viesser RV, Donald CP, May JA, Wu JI. Can Twisted Double Bonds Facilitate Stepwise [2 + 2] Cycloadditions? Org Lett 2024; 26:3778-3783. [PMID: 38684005 DOI: 10.1021/acs.orglett.4c00879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Computational studies for a series of low to high strain anti-Bredt alkenes suggest that those with highly twisted bridgehead double bonds and a small singlet-triplet energy gap may undergo facile stepwise [2 + 2] cycloadditions to furnish four membered rings. A selection of reaction substrates, including ethylene, acetylene, perfluoroethylene, and cyclooctyne are considered.
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Affiliation(s)
- Renan V Viesser
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Clayton P Donald
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Jeremy A May
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - Judy I Wu
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
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2
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Wang ZQ, Deng C, Li B, Luo HQ, Hao P, Liu X, Ma JG, Cheng P. Hierarchical surface-modification of nano-Cu toward one pot H-transfer-coupling-cyclization-CO 2 fixation tandem reactions. MATERIALS HORIZONS 2024; 11:1957-1963. [PMID: 38348621 DOI: 10.1039/d3mh01921g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Fixation of CO2 into dihydroisobenzofuran derivatives has enormous applications in both production of natural products and antidepressant drugs, and reducing the green-house effect. However, the relatively complicated multi-step processes limit the further expansion of such a valuable CO2 conversion strategy. Herein, we hierarchically modify the surface of Cu nanoparticles (NPs) with Ag NPs and the robust metal-organic framework (MOF), ZIF-8, and report the presence of the Cu-Ag yolk-shell nanoalloy based heterogeneous catalysts, Cu@Ag and Cu@Ag@ZIF-8. The latter exhibits a crystalline "raisin bread" structure and specific synergic activity for catalyzing the tandem reactions of intra-molecular H-transfer, C-C and C-O coupling, cyclization, and carboxylation from CO2, leading to the first non-homogeneous preparation of dihydroisobenzofuran derivatives in high yield, selectivity, and recyclability under mild conditions. Theoretical calculations elucidate the tandem reaction pathway synergically catalyzed by Cu@Ag@ZIF-8, which offers insights for designing multiphase catalysts towards both organic synthesis and CO2 fixation through tandem processes in one pot.
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Affiliation(s)
- Zhi-Qiang Wang
- College of Basic Sciences, Shanxi Agricultural University, Jinzhong, 030800, P. R. China
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - ChengHua Deng
- Department of Chemical Sciences and Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland
| | - Bo Li
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Hai-Qiang Luo
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Peng Hao
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xiao Liu
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Jian-Gong Ma
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Peng Cheng
- Department of Chemistry and Key Laboratory of Advanced Energy Material Chemistry (MOE), College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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Dutta S, Erchinger JE, Strieth-Kalthoff F, Kleinmans R, Glorius F. Energy transfer photocatalysis: exciting modes of reactivity. Chem Soc Rev 2024; 53:1068-1089. [PMID: 38168974 DOI: 10.1039/d3cs00190c] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
Excited (triplet) states offer a myriad of attractive synthetic pathways, including cycloadditions, selective homolytic bond cleavages and strain-release chemistry, isomerizations, deracemizations, or the fusion with metal catalysis. Recent years have seen enormous advantages in enabling these reactivity modes through visible-light-mediated triplet-triplet energy transfer catalysis (TTEnT). This tutorial review provides an overview of this emerging strategy for synthesizing sought-after organic motifs in a mild, selective, and sustainable manner. Building on the photophysical foundations of energy transfer, this review also discusses catalyst design, as well as the challenges and opportunities of energy transfer catalysis.
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Affiliation(s)
- Subhabrata Dutta
- University of Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany.
| | - Johannes E Erchinger
- University of Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany.
| | - Felix Strieth-Kalthoff
- University of Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany.
| | - Roman Kleinmans
- University of Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany.
| | - Frank Glorius
- University of Münster, Organisch-Chemisches Institut, Corrensstraße 36, 48149 Münster, Germany.
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Schoch T, Wyneken H, Despain M, Weaver JD. Probing the Visible Light-Driven Geometrical Isomerization of 4-Arylbut-3-ene-2-amines. ChemCatChem 2023; 15:e202301002. [PMID: 38846965 PMCID: PMC11156259 DOI: 10.1002/cctc.202301002] [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: 08/08/2023] [Indexed: 06/09/2024]
Abstract
A series of thirteen 4-arylbut-3-ene-2-amines were prepared and subjected to photosensitization experiments to interrogate their photostationary state (PS) composition of geometrical olefin isomers (E and Z). The amine PS compositions were found to depend on arene structure and temperature, while being largely independent of nitrogen substitution, solvent, or presence of triplet-quenching oxygen. Photonic efficiency of isomerization (ζp) was found to depend on amine structure, solvent choice, and presence of quencher. With the proper choice of conditions, ζp was able to closely approach the theoretical maximum value of 0.5.
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Affiliation(s)
- Timothy Schoch
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Hannah Wyneken
- Department of Chemical Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Megan Despain
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Jimmie D Weaver
- Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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Das P, DeSpain M, Ethridge A, Weaver JD. Exploiting Visible Light Triggered Formation of trans-Cyclohexene for the Contra-thermodynamic Protection of Alcohols. Org Lett 2023; 25:7316-7321. [PMID: 37773592 DOI: 10.1021/acs.orglett.3c02666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
We report herein a method for the contra-thermodynamic protection and thermodynamic deprotection of alcohols in which all reagents are returned to their original state. This is accomplished by the use of visible light photochemical energy to drive the formation of a highly strained trans-(Z)-cyclohexene. At STP the product ethers contain more potential energy than the starting materials and, thus, can be catalytically returned to the starting materials, effectively realizing a protection-deprotection scheme paid for with an energy currency.
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Affiliation(s)
- Pritha Das
- 107 Physical Science, Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Megan DeSpain
- 107 Physical Science, Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Avery Ethridge
- 107 Physical Science, Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Jimmie D Weaver
- 107 Physical Science, Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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