Mentioned in ?
References in periodicals archive ?
This very aromatic diketone (sensory threshold: 16 ng/L) is reminiscent of the odor of prune.
The resulting dialdehyde (1) and diketone (2), both new compounds, were then subjected to Claisen-Schmidt reaction under high dilution condition when the macrocyclic bischalcone 3 was obtained in moderate yield (Scheme 1).
Morgan's findings provide strong evidence that inhaled diketone vapors can produce airway fibrotic disease and support a causal relationship between workplace exposure to high concentrations of diketones and the development of bronchiolitis obliterans, according to John Morris, a professor of pharmacology and toxicology at the University of Connecticut, Storrs.
pyrone type, chromene, diketone, or quinone groups) and delocalised [pi]-electrons of the basal planes are assumed to have a basic nature (Contescu et al.
2-Bromo-benzaldelhyde was reacted with diketone 8 to form an imidazole.
The switch between diphenol (or hydroquinone) and diketone (or quinone) occurs easily through oxidation and reduction reactions.
1 dietary fibre 2 dead reckoning 3 cold turkey 4 needle in a haystack 5 second thoughts 6 bogeyman 7 hang-up 8 doesn't add up 9 double helix 10 miscarriage of justice 11 accessories 12 break in 13 jump the gun 14 helpless 15 beef jerky 16 chicken wire 17 go at it tooth and nail 18 drop in the ocean 19 chromatic scale 20 diketone 21 butcher 22 just in time 23 childbearing 24 stick 25 press charges 26 down under 27 biophysics 28 make a fool of 29 audio frequency 30 battering ram 31 chairperson 32 laughing stock 33 split second 34 beta decay 35 wee hours of the morning 36 naked as a jaybird
Another component identified from the Singha extract was a substituted diketone.
Greg Casey, of Anheuser-Busch's corporate research and development, used Cadoe to determine the influence of wort amino acid levels on vicinal diketone (VDK) production in lager fermentations.
In chemical terms, it showed an R group attached to a b diketone.
Accordingly, in presence of acetic acid, indole adds to diketone ester A to form indolylcarbinols 3 through the Friedel-Crafts reaction.