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Fressancourt-Collinet M, Hong B, Leclercq L, Alsters PL, Aubry JM, Nardello-Rataj V. Acidic Three-Liquid-Phase Microemulsion Systems Based on Balanced Catalytic Surfactant for Epoxidation and Sulfide Oxidation under Mild Conditions. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200514] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hang J, Ghorai P, Finkenstaedt-Quinn SA, Findik I, Sliz E, Kuwata KT, Dussault PH. Generation of singlet oxygen from fragmentation of monoactivated 1,1-dihydroperoxides. J Org Chem 2012; 77:1233-43. [PMID: 22283731 DOI: 10.1021/jo202265j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first singlet excited state of molecular oxygen ((1)O(2)) is an important oxidant in chemistry, biology, and medicine. (1)O(2) is most often generated through photosensitized excitation of ground-state oxygen. (1)O(2) can also be generated chemically through the decomposition of hydrogen peroxide and other peroxides. However, most of these "dark oxygenations" require water-rich media associated with short (1)O(2) lifetimes, and there is a need for oxygenations able to be conducted in organic solvents. We now report that monoactivated derivatives of 1,1-dihydroperoxides undergo a previously unobserved fragmentation to generate high yields of singlet molecular oxygen ((1)O(2)). The fragmentations, which can be conducted in a variety of organic solvents, require a geminal relationship between a peroxyanion and a peroxide activated toward heterolytic cleavage. The reaction is general for a range of skeletal frameworks and activating groups and, via in situ activation, can be applied directly to 1,1-dihydroperoxides. Our investigation suggests the fragmentation involves rate-limiting formation of a peroxyanion that decomposes via a Grob-like process.
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Affiliation(s)
- Jiliang Hang
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, USA
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Ghorai P, Dussault PH. A new peroxide fragmentation: efficient chemical generation of (1O2) in organic media. Org Lett 2009; 11:4572-5. [PMID: 19772310 DOI: 10.1021/ol9018216] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Monoactivated derivatives of 1,1-dihydroperoxides undergo an unprecedented base-promoted fragmentation to efficiently generate singlet oxygen (1O2) in anhydrous organic solvents.
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Affiliation(s)
- Prasanta Ghorai
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588-0304, USA
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Alsters PL, Jary W, Nardello-Rataj V, Aubry JM. “Dark” Singlet Oxygenation of β-Citronellol: A Key Step in the Manufacture of Rose Oxide. Org Process Res Dev 2009. [DOI: 10.1021/op900076g] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Paul L. Alsters
- DSM Pharmaceutical Products, Innovative Synthesis and Catalysis, P.O. Box 16, 6160 MD Geleen, The Netherlands, DSM Fine Chemicals Austria, P.O. Box 296, 4021 Linz, Austria, and Université Lille 1, Sciences et Technologie, LCOM, Equipe “Oxydation et Physico-chimie de la Formulation”, CNRS UMR 8009, Bât. C6, 59655 Villeneuve d’Ascq Cedex, France
| | - Walther Jary
- DSM Pharmaceutical Products, Innovative Synthesis and Catalysis, P.O. Box 16, 6160 MD Geleen, The Netherlands, DSM Fine Chemicals Austria, P.O. Box 296, 4021 Linz, Austria, and Université Lille 1, Sciences et Technologie, LCOM, Equipe “Oxydation et Physico-chimie de la Formulation”, CNRS UMR 8009, Bât. C6, 59655 Villeneuve d’Ascq Cedex, France
| | - Véronique Nardello-Rataj
- DSM Pharmaceutical Products, Innovative Synthesis and Catalysis, P.O. Box 16, 6160 MD Geleen, The Netherlands, DSM Fine Chemicals Austria, P.O. Box 296, 4021 Linz, Austria, and Université Lille 1, Sciences et Technologie, LCOM, Equipe “Oxydation et Physico-chimie de la Formulation”, CNRS UMR 8009, Bât. C6, 59655 Villeneuve d’Ascq Cedex, France
| | - Jean-Marie Aubry
- DSM Pharmaceutical Products, Innovative Synthesis and Catalysis, P.O. Box 16, 6160 MD Geleen, The Netherlands, DSM Fine Chemicals Austria, P.O. Box 296, 4021 Linz, Austria, and Université Lille 1, Sciences et Technologie, LCOM, Equipe “Oxydation et Physico-chimie de la Formulation”, CNRS UMR 8009, Bât. C6, 59655 Villeneuve d’Ascq Cedex, France
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Borde C, Nardello V, Wattebled L, Laschewsky A, Aubry JM. A gemini amphiphilic phase transfer catalyst for dark singlet oxygenation. J PHYS ORG CHEM 2008. [DOI: 10.1002/poc.1344] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Jiang JZ, Wei YA, Cai C. Copper- and ligand-free Sonogashira reaction catalyzed by palladium in microemulsion: Effects of surfactant and alcohol. J Colloid Interface Sci 2007; 312:439-43. [PMID: 17451733 DOI: 10.1016/j.jcis.2007.03.017] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2007] [Revised: 03/04/2007] [Accepted: 03/09/2007] [Indexed: 11/19/2022]
Abstract
A rapid copper- and ligand-free Sonogashira reaction was performed in an oil-in-water microemulsion. Palladium nanoparticles can be in situ formed in the microemulsion without other reductants. The microemulsion containing in situ-formed nano-Pd is an efficient system for the Sonogashira reaction. The reactions were faster in the microemulsion than in micelles. The effects of surfactant, alcohol, and temperature are discussed. Excellent yield of the Sonogashira reaction catalyzed by 0.5 mol% palladium could be achieved at 80 degrees C within 2 min.
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Affiliation(s)
- Jian-Zhong Jiang
- School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaoling Wei, Nanjing 210094, PR China
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Jiang JZ, Cai C. Copper- and ligand-free Sonogashira reaction catalyzed by palladium in microemulsion. J Colloid Interface Sci 2007; 307:300-3. [PMID: 17141262 DOI: 10.1016/j.jcis.2006.10.087] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2006] [Revised: 10/28/2006] [Accepted: 10/30/2006] [Indexed: 11/20/2022]
Abstract
An oil-in-water microemulsion containing PdCl2 and NaOH can be used as an effective catalyst system for rapid copper- and ligand-free Sonogashira reaction of aryl halides and phenylacetylene. Excellent yield of the Sonogashira reaction catalyzed by 0.5 mol% palladium could be achieved within 5 min. The types of base have an intense influence on the reaction. The reaction rate was increased with increased aqueous content in the microemulsions, and dispersed palladium nanoparticles can be in situ formed without other reductants.
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Affiliation(s)
- Jian-Zhong Jiang
- School of Chemical Engineering, Nanjing University of Science and Technology, 200 Xiaoling Wei, Nanjing, 210094, China
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