The carbonyl carbon in ketones was lost through decarbonylation where it could be retained in the CCA of aromatic isobutyrophenone.;Part 3 reports the preliminary exploration of facile CCA in diisopropyl ketone using the much economical 5,10,15,20-tetrakis(4-anisyl)porphyrinato cobalt(II) ...
The absence of the ketone function in the dihydro-iso-alpha-acids has the following consequences: • The Norrish Type I cleavage in the photochemical breakdown is no longer possible, effectively rendering the dihydro-iso-alpha-acids photostable. • The retro-aldol reaction under basic conditions...
In subject area: Neuroscience Alpha Cyclodextrin is defined as a type of cyclodextrin with a toroid cone structure composed of six glucopyranoside units, which has a hydrophobic core and a hydrophilic exterior. It is used to enhance the solubility and bioavailability of hydrophobic drug molecules thro...
The present invention is a novel process for producing β-ketoesters 1 by contacting an α-chloroketone 2 with carbon monoxide and a hydroxyl-containing compound of formula ROH in the presence of a base and a palladium carbene catalyst complex 3. The subject catalysts demonstrate superior rates ...
Aliphatic or cyclo aliphatic aldehydes or ketones containing at least 3 carbon atoms are prepared by dehydrogenating the corresponding primary or secondary alcohols in the gaseous state at a temperature between about 350 DEG C. and abou... PWG Smith,AR Tatchell 被引量: 0发表: 1955年 The pres...
;CONSTITUTION: This optically active α-hydroxyketone derivative of formula I (R is an alkyl-substituted silyl; atom labeled with * is asymmetric carbon atom), e.g. 2-trimethylsiloxy-1-indanone is produced by reacting an alkyl- substituted siloxyindene of formula II with an oxidizing ...
Noun1.alpha-linolenic acid- a polyunsaturated fatty acid with 18 carbon atoms; the only omega-3 fatty acid found in vegetable products; it is most abundant in canola oil; a fatty acid essential for nutrition omega-3,omega-3 fatty acid- a polyunsaturated fatty acid whose carbon chain has its...
申请日：20051214 公开号：EP1676830A1 公开日：20060705 专利内容由知识产权出版社提供 摘要：The present invention is a novel process for producing β-ketoesters by contacting an α-chloroketone with carbon monoxide and a hydroxyl-containing compound of formula ROH in the presence of a base and a ...
Thus, we used molecular dynamics simulation to study the adsorption of α-chymotrypsin (α-ChT) on carbon nanotube (CNT) in aqueous solution and heptane media. The results indicate that α-ChT has stronger affinity with CNT in aqueous solution than in heptane media, as confirmed by more ...
Alpha-oxidation (α-ox) is the process in which one carbon is removed from the carboxyl end of an FA-CoA to yield to an FA one carbon shorter and a formyl-CoA. This latter is catabolized into CO2 and a CoA. The α-ox does not generate ATP, but it can prepare FA for β-ox and...