✦ LIBER ✦

On the catalytic cycle of the palladium-catalyzed cross-coupling reaction of alkynylstannane with aryl iodide

✍ Scribed by Eiji Shirakawa; Hiroto Yoshida; Tamejiro Hiyama

Publisher: Elsevier Science
Year: 1997
Tongue: French
Weight: 218 KB
Volume: 38
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(97)01121-0

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✦ Synopsis

The coupling reaction of phenylcthynyltributyltin with (4-trifluoromethyl)iodobenzene catalyzed by a Pd(0) complex coordinated by N-(2-diphenylphosphinobenzylidene)-2-phenylethylamine was found to start with oxidative addition of the tin reagent to the Pd(0) complex. In contrast, the use of 1,3-bis(diphenylphosphino)propane as the ligand switched the catalytic cycle to the well-accepted one initiated by oxidative addition of the aryl iodide to the Pd(0) complex.

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