1092386-92-9Relevant academic research and scientific papers
An efficient synthesis of functional stilbenes in Hiyama coupling reaction catalysed by H-spirophosphorane palladium complex
Skaryńska, Anna,Majchrzak, Mariusz,Trzeciak, Anna M.,Marciniec, Bogdan
, p. 128 - 135 (2011)
An efficient Hiyama cross-coupling reaction of functionalised styrylsilanes with iodo- and bromobenzene has been performed using complex [PdCl 2P(OCH2CMe2NH) OCH2CMe 2NH2] as precatalyst. The styrylsilanes underwent cross-coupling reactions with excellent selectivity and yield, up to 99%, of the corresponding E-stilbenes. When (E)-[1-(4-bromophenyl)-2-(1,1,3,3,3- pentamethyldisiloxy)]ethene was used as a source of the silane, a homocoupling reaction took place and polymeric compound containing 0.77% of palladium in the form of Pd(0) nanoparticles was obtained. This material used as a catalyst made it possible to obtain 40% and 38% of the Hiyama cross-coupling product in two subsequent runs.
A convenient one-pot synthesis of bis[(E)-4-halostyryl]arene derivatives
Prukala, Wieslaw,Majchrzak, Mariusz,Posala, Krystian,Marciniec, Bogdan
experimental part, p. 3047 - 3052 (2009/04/06)
A new convenient synthetic protocol for the one-pot stereoselective synthesis of bis[(E)-4-bromo(or chloro)styryl]arene derivatives via the sequential reaction of silylative-coupling of 4-halostyrenes with vinylsilanes followed by palladium-catalyzed cross-coupling 4-halostyrylsilanes with diiodoarenes, is described. The reaction leads to symmetrical bis[(E)-4-halostyryl]arene derivatives obtained in a stereocontrolled manner with high efficiency. Georg Thieme Verlag Stuttgart.
