- Radical carbonylation with [11C]carbon monoxide promoted by oxygen-centered radicals: Experimental and DFT studies of the mechanism
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Photoinitiated carbonylation of alkyl iodides with [11C]carbon monoxide (11C t1/2 = 20.4 min) is enhanced by ketones that have lowest-lying excited triplet state of nπ* character. For example, adding 5 mol % of acetophenon
- Itsenko, Oleksiy,Norberg, Daniel,Rasmussen, Torben,Langstroem, Bengt,Chatgilialoglu, Chryssostomos
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- Ni-Catalyzed Reductive Carbonylation of Alkyl Halides to Form Dialkyl Ketones Using Diphenyl Oxalate as CO Surrogate
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In this work, we disclosed that diphenyl oxalate serves as a CO surrogate to enable a Ni-catalyzed carbonylation of alkyl bromides/tosylates to afford dialkyl ketones. The reaction shows broad substrate scope and good functional group tolerance.
- Sun, Yuren,Su, Lei,Tong, Weiqi,Yao, Ken,Gong, Hegui
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supporting information
p. 1762 - 1766
(2021/08/13)
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- From Alkyl Halides to Ketones: Nickel-Catalyzed Reductive Carbonylation Utilizing Ethyl Chloroformate as the Carbonyl Source
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Ketones are an important class of molecules in synthetic and medicinal chemistry. Rapid and modular synthesis of ketones remains in high demand. Described here is a nickel-catalyzed three-component reductive carbonylation method for the synthesis of dialkyl ketones. A wide range of both symmetric and asymmetric dialkyl ketones can be accessed from alkyl halides and a safe CO source, ethyl chloroformate. The approach offers complementary substrate scope to existing carbonylation methods while avoiding the use of either toxic CO or metal carbonyl reagents.
- Shi, Renyi,Hu, Xile
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supporting information
p. 7454 - 7458
(2019/04/30)
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- S,S-dimethyl dithiocarbonate: A novel carbonyl dication synthon in the synthesis of ketones
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We report herein the use of DMDTC as an effective carbonyl dication equivalent in ketone synthesis. According to our strategy, we also successfully devised a synthetic pathway for S-methyl (trimethylsilyl)thioacetate which may be a potentially useful synthetic reagent in organic synthesis.
- Chen, Chiar-Dy,Huang, Jui-Wen,Leung, Man-Kit,Li, Huei-Hsu
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p. 9067 - 9078
(2007/10/03)
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- Diphenyl derivatives of polyamine compounds having a piperidine moiety
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Novel diphenyl and loweralkyl substituted diphenyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful because of their low toxicity, and as such are advantageously included as the active agent in surgical scrubs, antibacterial soaps, as preservatives in cosmetic preparations, and the like. They also can be used for topical treatment of dermatological conditions having a bacterial origin or implication such as Acne vulgaris.
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- Diphenyl polyamides having a cyclohexylene moiety
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Novel diphenyl and loweralkyl substituted diphenyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful because of their low toxicity, and as such are advantageously included as the active agent in surgical scrubs, antibacterial soaps, as preservatives in cosmetic preparations, and the like. They also can be used for topical treatment of dermatological conditions having a bacterial origin or implication such as Acne vulgaris.
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- Polyamine compounds as antibacterial agents
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Novel diphenyl and loweralkyl substituted diphenyl polyamines are useful antimicrobial agents, as well as algae inhibitors. They are especially useful because of their low toxicity, and as such are advantageously included as the active agent in surgical scrubs, antibacterial soaps, as preservatives in cosmetic preparations, and the like. They also can be used for topical treatment of dermatological conditions having a bacterial origin or implication such as Acne vulgaris.
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- Broad spectrum antibacterial compositions containing tris (hydroxymethyl)-aminomethane and diphenyl and loweralkyl substituted diphenyl polyamines
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A composition comprising tris-(hydroxymethyl)aminomethane and diphenyl and loweralkyl substituted diphenyl polyamines, their acid addition salts, and mixtures thereof are useful as antibacterial agents. The composition is particularly useful because of the synergistic improvement obtained against strains of the genus Pseudomonas, as well as other genera.
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