69366-51-4Relevant academic research and scientific papers
Heck coupling with nonactivated alkenyl tosylates and phosphates: Examples of effective 1,2-migrations of the alkenyl palladium(II) intermediates
Hansen, Anders L.,Ebran, Jean-Philippe,Ahlquist, Marten,Norrby, Per-Ola,Skrydstrup, Troels
, p. 3349 - 3353 (2006)
(Chemical Equation Presented) What the Heck! A catalytic system composed of a Pd complex with a basic, hindered alkyl phosphine ligand is capable of promoting Heck coupling of nonactivated vinyl tosylates and phosphates with electron-deficient olefins. An unexpected 1,2-migration of the alkenyl Pd II intermediates (see Scheme) leads to the isomerized Heck coupling product.
Studies on the heck reaction with alkenyl phosphates: Can the 1,2-migration be controlled? Scope and limitations
Ebran, Jean-Philippe,Hansen, Anders L.,Gogsig, Thomas M.,Skrydstrup, Troels
, p. 6931 - 6942 (2008/02/08)
A catalyst system was identified which promotes the Heck coupling of nonactivated vinyl phosphates with electron deficient alkenes providing a new entry to diene products from simple and readily accessible starting materials. In contrast to our earlier wo
Synthesis of Isomerically Pure (E)- and (Z)-1,3-Disubstituted 1,3-Dienes
Mulzer, Johann,Bruentrup, Gisela,Kuehl, Uwe,Hartz, Georg
, p. 3453 - 3469 (2007/10/02)
The (E)-dienes 1a - p were prepared in >98percent purity by dehydrative decarboxylation of the corresponding 4,5-unsaturated 3-hydroxycarboxylic acids 3 with dimethylformamide dimethylacetal (11).The (Z)-isomers 6a - m were obtained by stereouncontrolled
