16868-32-9Relevant academic research and scientific papers
Efficient functionalization of olefins by arylsilanes catalyzed by palladium anionic complexes
Silarska,Majchrzak,Marciniec,Trzeciak
, p. 458 - 464 (2016/12/16)
The coupling of organosilanes and different olefins was performed efficiently in the presence of anionic complexes, [CA]2[PdX4] and [CA]2[Pd2X6], where CA?=?imidazolium or pyridinium cation. The reaction proceeds according to a Pd(II)-mediated pathway, and Cu(OAc)2 acts as the re-oxidant of Pd(0) formed during the catalytic process. High product yields were obtained for differently substituted olefins at 80?°C in 4?h. Styrylsilanes reacted in the same conditions giving unsymmetrical 1,3-dienes.
Pd(II)-catalyzed dehydrogenative olefination of vinylic C-H bonds with allylic esters: General and selective access to linear 1,3-butadienes
Zhang, Yuexia,Cui, Zili,Li, Zejiang,Liu, Zhong-Quan
supporting information; experimental part, p. 1838 - 1841 (2012/06/18)
This work demonstrates a general and efficient method to prepare conjugated dienes by Pd(II)-catalyzed direct olefination of unactivated alkenes with allylic esters and acrylates via vinylic C-H activation. Various aryl and heteroaryl alkenes as well as a
Palladium-catalyzed intermolecular three-component coupling of organic halides with alkynes and alkenes: Efficient synthesis of oligoene compounds
Shibata, Kana,Satoh, Tetsuya,Miura, Masahiro
, p. 2317 - 2325 (2008/09/19)
The intermolecular three-component coupling of aryl or vinyl halides, diarylacetylenes, and monosubstituted alkenes effectively proceeds in the presence of palladium acetate, lithium chloride, and sodium bicarbonate as catalyst, promoter, and base, respectively, in aqueous DMF or DMSO to produce the corresponding 1,3-butadiene or 1,3,5-hexatriene derivatives. Use of dienyl bromides allows the coupling to afford 1,3,5,7-octatetraenes. Under the present catalytic conditions, fulvene derivatives are also formed efficiently by the 1:2 coupling of vinyl bromides and diarylacetylenes without adding the alkenes.
