Olefin Cross-Metathesis Reactions at Room Temperature Using the Nonionic Amphiphile “PTS”: Just Add Water
作者:Bruce H. Lipshutz、Grant T. Aguinaldo、Subir Ghorai、Karl Voigtritter
DOI:10.1021/ol800028x
日期:2008.4.1
cross-metathesis reactions in water, involving water-insoluble substrates, at roomtemperature and using commercially available catalysts are reported. The key to success is to include small percentages of the nonionic, vitamin E-based amphiphile "PTS". The nanometermicelles formed accommodate water-insoluble substrates, along with a readily available Ru-based metathesis catalyst. Reactions proceed
[EN] VITRONECTIN RECEPTOR ANTAGONISTS<br/>[FR] ANTAGONISTES DU RECEPTEUR DE LA VITRONECTINE
申请人:SMITHKLINE BEECHAM CORPORATION
公开号:WO1999045927A1
公开(公告)日:1999-09-16
(EN) Pharmaceutically active compounds which inhibit the vitronectin receptor and are useful for the treatment of inflammation, cancer and cardiovascular disorders, such as atherosclerosis and restenosis, and diseases wherein bone resorption is a factor, such as osteoporosis.(FR) La présente invention concerne des composés pharmaceutiquement actifs inhibiteurs du récepteur de la vitronectine. Ces composés conviennent pour le traitement de l'inflammation, du cancer, et de troubles cardio-vasculaires tels que l'athérosclérose et la resténose. Ces composés conviennent également pour le traitement de maladies où intervient une résorption osseuse, et notamment l'ostéoporose.
A Highly Selective and General Palladium Catalyst for the Oxidative Heck Reaction of Electronically Nonbiased Olefins
作者:Erik W. Werner、Matthew S. Sigman
DOI:10.1021/ja1060998
日期:2010.10.13
A general, highly selective oxidative Heck reaction is reported. The reaction is high-yielding under mild conditions without the need for base or high temperatures, and the selectivity is excellent, without the requirement for electronically biased olefins or other specific directing groups. A preliminary mechanistic investigation suggests that the unusually high selectivity may be due to the catalyst's sensitivity to C-H bond strength in the selectivity-determining beta-hydride elimination step.