239448-30-7Relevant academic research and scientific papers
Selenium-ligated palladium(II) complexes as highly active catalysts for carbon-carbon coupling reactions: The Heck reaction
Yao, Qingwei,Kinney, Elizabeth P.,Zheng, Chong
, p. 2997 - 2999 (2007/10/03)
(Equation Presented) Three selenium-ligated Pd(II) complexes were readily synthesized and shown to be extremely active catalysts for the Heck reaction of various aryl bromides, including deactivated and heterocyclic ones. The catalytic activity of the selenide-based Pd(II) complexes not only rivals but vastly outperforms that of the corresponding phosphorus and sulfur analogues. Practical advantages of the selenium-based catalysts include their straightforward synthesis and high activity in the absence of any additives as well as the enhanced stability of the selenide ligands toward air oxidation.
The synthesis and reactions of 2,11-diselenametacyclophanes. An investigation of the selenoxide elimination route to metacyclophane-1,8-dienes
Mitchell, Reginald H.
, p. 1398 - 1406 (2007/10/02)
2,11-Diselenametacyclophane and its 9,18-dimethyl derivative are prepared in ca. 7percent yield from Na2Se and xylylene bromide.Wittig rearrangement and benzyne induced Stevens rearrangement gave the ring contracted metacyclophane derivative.Attempted selenoxide elimination to produce metacyclophane-diene failed.The 1Hmr spectra of the selenametacyclophane indicate that the syn-conformer is the more stable.A general synthesis of aryl-alkenes in an 80percent yiels starting from benzyl phenyl selenide, alkylation with an alkyl halide, and then selenoxide elimination is given.
