19866-51-4Relevant articles and documents
Two-carbon homologation of ketones via sily ketene acetals: Synthesis of α,β-unsaturated acids and α-trimethylsilyl δ-ketoacids
Bellassoued, Moncef,Mouelhi, Sinda,Fromentin, Pierre,Gonzalez, Aurélien
, p. 2172 - 2179 (2007/10/03)
The reaction of C,O,O-tris(trimethylsilyl)ketene acetal 1 with saturated, cyclic and aromatic ketones 2 proceeds smoothly in the presence of titanium chloride to give (E)-α,β-unsaturated carboxylic acids 3 with fairly good stereoselectivity. With α,β-unsa
Stereospecific synthesis of (Z) or (E)-3-methylalk-2-enoic acids
Abarbri,Parrain,Duchene
, p. 2469 - 2472 (2007/10/02)
The palladium catalysed coupling of organozinc or organotin reagents with 3-iodobut-2(or 3)-enoic acid is stereoselective and affords Z (or E)-3-methylalk-2-enoic acids. The method was applied to the synthesis of the E and Z stereoisomers of ocimenones and pseudo-tagetones.
Synthesis of the Enantiomers of (E)-1-Ethyl-5-methyl-4-heptenyl Acetate (Quadrilure), the Aggregation Pheromone of Cathartus quadricollis
Mori, Kenji,Puapoomchareon, Prapai
, p. 159 - 162 (2007/10/02)
The synthesis of (R)- and (S)-quadrilure (1) was achieved starting from (R)- and (S)-methyl 3-hydroxypentanoate (2) in 8 steps (34-35percent yield).
