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ketene
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Ketene is an organic compound of the form RR'C=C=O, where R and R' are two arbitrary monovalent chemical groups. It is highly reactive and unstable, and can form esters, anhydrides, amides, enol esters, dimers and cycloaddition products with various reagents.
Ketene | CH2=C=O or CH2=CO or C2H2O | CID 10038 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
Ketene reacts with aldehydes and ketones to form enol acetates or β- lactones. In the absence of a reactive substrate, ketene combines with itself to form diketene, a β-lactone used industrially to prepare derivatives of acetoacetic acid, such as ethyl acetoacetate and acetoacetamides. The higher ketenes are generally synthesized by elimination of hydrogen chloride from acyl chlorides. The ...
Learn about ketenes, substances with cumulated carbonyl and carbon-carbon double bonds, and their methods of preparation and reactions. Find out how ketene and diketene are used for acylation and cycloaddition, and their unusual properties and stability.
Ketene is a colorless, toxic gas that can be used to make esters, amides, and other compounds. Learn about its history, synthesis, and reactions from CAS, the authoritative source for chemical information.
A presentation by Xuan Zhou on the history, types, preparation and reactions of ketenes, as well as their applications in synthesis. Learn about the first reported ketene, the Wolff rearrangement, the [2+2] cycloaddition, the β-lactam formation and more.
Ketenes are carbonyl compounds containing the CO group connected by a double bond to a carbon atom. Learn about their synthesis, properties, reactions, and applications from various chapters and articles on ScienceDirect Topics.
Ketene is an organic compound with the formula R′R′′C=C=O and two arbitrary monovalent chemical groups. Learn how ketene is made, its structure, its reactions, and its applications in organic synthesis.
The existence of ketenes was established 100 years ago, and in recent years the pace of discovery in the study of these reactive intermediates has accelerated — extremely unstable ketenes such as dif...
Learn about ketene, a valuable organic reagent with sp carbon atoms and high reactivity. Find out how to prepare ketene by different methods and how to use it in organic synthesis with alkenes, imines, aldehydes, ketones and more.