کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1327928 | 977517 | 2005 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: 1′-Carbopalladated-4-ferrocenyl-1,3-oxazolines as catalysts for Heck reactions: Further evidence in support of the Pd(0)/Pd(II) mechanism 1′-Carbopalladated-4-ferrocenyl-1,3-oxazolines as catalysts for Heck reactions: Further evidence in support of the Pd(0)/Pd(II) mechanism](/preview/png/1327928.png)
1′-Carbopalladated complexes derived from 4-ferrocenyl-1,3-oxazolines are reported in this paper as efficient catalysts for the Heck coupling of iodo- and bromoarenes with alkenes. Experimental evidence points out strongly towards the involvement of a Pd(0)/Pd(II) catalytic cycle in the mechanism of the reaction. For the first time, the disassembly of the carbopalladated complex via coupling with the olefin in a non-catalytic Heck reaction has been demonstrated to be the origin of the release of Pd(0) from the palladacycle carrier.
1′-Carbopalladated complexes derived from 4-ferrocenyl-1,3-oxazolines behave as pre-catalysts for the Heck coupling of iodo- and bromoarenes with alkenes. The reaction proceeds through a Pd(0)/Pd(II) catalytic cycle. The release of Pd(0) from the palladacycle takes place by coupling with the olefin in a non-catalytic Heck reaction.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 690, Issue 9, 29 April 2005, Pages 2291–2296