diketone


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di·ke·tone

(dī-kē'tōn),
A molecule containing two carbonyl groups, for example, acetylacetone (CH3COCH2COCH3).

di·ke·tone

(dī-kē'tōn)
A molecule containing two carbonyl groups; e.g., acetylacetone.
References in periodicals archive ?
Because diacetyl and 2,3-pentanedione, both diketones, are chemically very similar, Morgan suspected that inhaled 2,3-pentanedione may be toxic to the respiratory tract as well.
Caption: Engineering controls such as ventilated mixing vessels with hinged lids or access ports are the first line of protection against worker exposures to diketones in flavorings.
Looking back at the slide, I thought, 'What if I just took that small molecule from the literature that binds these integrins, and put a diketone on it.
It was inferred that the substituted [beta]-diketone underwent photolysis during exposure and the diketone structure was broken down.
Content of Molar ratio Reaction Content of diketone MA Acrylate (acrylate/ time acryloyloxy structure oligomer monomer acac) (min) group (mol/g) (mol/g) TMDAC TMPTA 2:1 50 4.
In the case of full conversion the main products were alcohols (4a) in yield 17% and (4b) 7%, diketone (5) 11%, and enone (1) 11% (see Table 1).
This can be associated with modifications in the chemical environment of the carbonyl bonds and also to a possible formation of [Beta] enolized diketone groups.
The samples of PVOH exposed to the Phanerochaete chrysosporium enzymes during 5 days showed deterioration, which implies changes in the chemical structures (oxidation or loss of small fragments) since in the UV signals show the possible formation of enolized [Beta] diketones.
During the wort fermentation period, several reactions closely related to cytoplasmic membrane occur in yeast, among them are: nutrients uptake, metabolic by-products extrusion, respiratory activity, vicinal diketones reduction, etc.