PROBLEM TO BE SOLVED: To provide a method for producing an α,β-unsaturated ketone having the advantages of avoiding high-boiling point byproduct formation, scarcely forming aldehyde-aldehyde consecutive product, scarcely forming ketone-ketone consecutive product, high space time yield, and a small-...
Various other more complex α,β-unsaturated ketone compounds (198)–(200) have been prepared either from [Fe(CO)5] with UV photolysis255 or from [Fe2(CO)9].256 Isomers of (198) with the Fe(CO)3 group on opposite faces of the ligand are obtained, but the iron seems to be bound ...
for reducing an .alpha.,.beta.-unsaturated ketone of the present invention includes the step of treating the .alpha.,.beta.-unsaturated ketone with a silyl compound in the presence of a Lewis acid and alcohol to selectively reduce the carbonyl group of the .alpha.,.beta.-unsaturated ketone....
In order to study the single electron transfer between the superoxide ion and an ..cap alpha..,..beta..-unsaturated ketone, cis-2,2,6,6-tetramethylhept-4-en-3-one was chosen as a molecule with appropriate reactivity criteria and without acidic protons. The stereochemistry of recovered starti...
Various other more complex α,β-unsaturated ketone compounds (198)–(200) have been prepared either from [Fe(CO)5] with UV photolysis255 or from [Fe2(CO)9].256 Isomers of (198) with the Fe(CO)3 group on opposite faces of the ligand are obtained, but the iron seems to be bound ...
Alpha-beta unsaturated ketone derivatives useful as herbicides Herbicidal compounds of the formula (I): wherein A is oxygen or sulphur; X is a 1-(1,2,4- triazolyl) or 1-imidazolyl radical; R' is an aliphatic or cycloaliphatic radical substituted by one or more of the following: halogen,...
Anionic ring-opening copolymerization of 2 with glycidyl phenyl ether (GPE) using PPh(3) as an initiator proceeded in a 1:1 alternating manner to give the corresponding polyester 3 bearing alpha,beta-unsaturated ketone groups in the side chains. Prolongation of polymerization time resulted in the...
I have a doubt...If I add LiAlH4 to a α-β unsaturated ester what will I get?LiAlH4 + -C=C-C=OORLiAlH4 will reduce only the C=OOr will reduce before C=C and then C=O ?I've seen an example with an unsaturated ketone and LiAlH4 has reduced only the C=O.But here I ...
German Patent DE19848305 Kind Code: C1 Abstract: Process for converting propargyl alcohol derivatives (I) into alpha , beta -unsaturated ketones (II) or alpha , beta -unsaturated alkynes (III) comprises contacting (I) at 20-140 deg C with an acidic cation-exchange resin in an organic solvent...
The present invention is directed to a process of making α-aminooxyketone and α-hydroxyketone compounds. The synthetic pathway generally involves reacting an aldehyde or ketone subs