928-60-9Relevant articles and documents
α,ω-Dialkyl-Substituted Polyenes by Palladium-Catalyzed Coupling Reactions of Vinyltin Compounds with Vinyl Halides
Kiehl, Alfried,Eberhardt, Anke,Muellen, Klaus
, p. 223 - 230 (2007/10/02)
α,ω-Dialkyl-substituted linear polyenes are synthesized in good yields by the palldium-catalyzed coupling reaction of trialkyltin- and iodo-substituted olefinic precursors.Central building blocks are the distannylated butadiene 8 and vinyl iodide 3.Our synthetic strategy was successfully applied to the preparation of the tert-butyl polyenes 13, 14, and 15 as well as polyenes 25 and 26 with longer α,ω-dialkyl chains. - Key Words: Polyenes, linear/ Vinyl tin compounds/ Vinyl halides/ Palladium catalysis
REGIOSPECIFIC AND STEREOSPECIFIC SUBSTITUTION OF HYDROXYL IN ALIPHATIC ALCOHOLS BY HALOGEN
Matveeva, E. D.,Kurts, A. L.,Yalovskaya, A. I.,Nikishova, N. G.,Bundel', Yu. G.
, p. 642 - 646 (2007/10/02)
A new system containing triphenylphosphine and trichloro- and tribromoacetic ester makes it possible to substitute the hydroxyl group in alcohols by halogen.Regiospecific and stereospecific substitution of the hydroxyl by the halogen takes place as a result of the reaction of primary and secondary aliphatic alcohols and of 2-alkenols, susceptible to isomerization processes, with this system.