Ullmann's Encyclopedia of Industrial Chemistry 2001
DOI: 10.1002/14356007.a15_063
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Ketenes

Abstract: The article contains sections titled: 1. Introduction 2. Ketene … Show more

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Cited by 13 publications
(10 citation statements)
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“…Moreover, ketenes are important intermediates in many name reactions, e.g. the Arndt Eistert reaction [4] or Staudinger synthesis [5] and in industrial processes such as for the production of sorbic acid or alkyl ketene dimers used in paper industry [6] . Over the years, various synthetic methods have been developed to access ketenes, including the pyrolysis of carbonyl compounds, the carbonylation of carbenes or metal carbenes or the Wolff rearrangement of diazoketones [7] .…”
Section: Figurementioning
confidence: 99%
“…Moreover, ketenes are important intermediates in many name reactions, e.g. the Arndt Eistert reaction [4] or Staudinger synthesis [5] and in industrial processes such as for the production of sorbic acid or alkyl ketene dimers used in paper industry [6] . Over the years, various synthetic methods have been developed to access ketenes, including the pyrolysis of carbonyl compounds, the carbonylation of carbenes or metal carbenes or the Wolff rearrangement of diazoketones [7] .…”
Section: Figurementioning
confidence: 99%
“…Because of their very high reactivity, ketenes are key intermediates in synthetic organic chemistry, and have even found industrial applications. [5][6][7] Despite the isolation of diphenylketene as early as the beginning of the 20th century, [8] most ketenes are intrinsically unstable and cannot be isolated. [5] Calculations have predicted that s-electron-withdrawing substituents, as well as p-donor groups destabilize ketenes.…”
mentioning
confidence: 99%
“…The process generates ketene that, in turn, reacts with acetone in the presence of acid catalysts. 166,167 Manufacturers of iPAc are some of the top players among world chemical companies, including Eastman, Dow, Wacker Chemie, and Hebei Ascend Chemical Co, and the overall synthesis is likely to attract more and more attention in the future through sustainable approaches based on acetic acid obtained by the catalytic reforming of biomass waste streams and acetone prepared by the ABE fermentation of sugars. 168 However, the high toxicity and poisoning effects of ketene pose restrictions and safety precautions.…”
Section: Isopropenyl Acetate For the Conversion Of Renewablesmentioning
confidence: 99%