Ketene

A ketene is a Composé organics containing the sequence:

Formation and mechanism

Starting from a Chloride acyle carrying a hydrogen in α.

A base, generally the triéthylamine, will tear off the acid proton in α Groupement carbonyl inducing the formation of the double connection carbon-carbon and the departure of the anion chloride.

Examples of uses

Synthesis of Cyclobutanone S

The cycloaddition of a ketene on a Alcène will lead to the formation of Cyclobutanone S. It is the reaction of Staudinger. In general, LUMO of ketene reacts with HOMO of the Alcène

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