One such example is the preparation of ketenes which may employ a tube furnace in the'ketene lamp '.
22.
When heated above, acetic acid decomposes to produce carbon dioxide and methane, or to produce ketene and water:
23.
Mechanistically, the ?-diazoketone undergoes a Wolff rearrangement to form a ketene in a 1, 2-rearrangement.
24.
"' Alkyl ketene dimers "'( AKDs ) are a family of organic compounds that are used in papermaking.
25.
The ketene formation during the deprotonation process for substrates possessing Evans'oxazolidinone is also a main side reaction for the related alkylation reactions.
26.
At high temperatures, Meldrum's acid undergoes a pericyclic reaction that releases acetone and carbon dioxide and produces a highly reactive ketene compound.
27.
Alt = Reaction of the pyrolysis-product ketene with amines, hydroxyl compounds, or water gives amides, esters, or carboxylic acids respectively
28.
Although nitrile anions are functionally similar to enolates, the extra multiple bond in nitrile anions provides them with a unique ketene-like geometry.
29.
Unlike the Staudinger ?-lactam synthesis, the Umpolung ketene in the Lectka ?-lactam synthesis behaves as the nucleophile rather than the electrophile.
30.
Deuterium stabilization can be accomplished through hydrolysis of a ketene precursor in the presence of a slight stoichiometric excess of heavy water ( D 2 O ).
