[Pd(IPr*OMe)(acac)Cl]: Tuning the N-Heterocyclic Carbene in Catalytic C鈥揘 Bond Formation

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• 作者：Sebastien Meiries ; Klaus Speck ; David B. Cordes ; Alexandra M. Z. Slawin ; Steven P. Nolan
• 刊名：Organometallics
• 出版年：2013
• 出版时间：January 14, 2013
• 年：2013
• 卷：32
• 期：1
• 页码：330-339
• 全文大小：558K
• 年卷期：v.32,no.1(January 14, 2013)
• ISSN：1520-6041

文摘

A new N-heterocyclic ligand IPr*^OMe [N,N鈥?bis(2,6-bis(diphenylmethyl)-4-methoxyphenyl)imidazol-2-ylidene] has been synthesized and compared with its earlier methyl-substituted congener IPr* [N,N鈥?bis(2,6-bis(diphenylmethyl)-4-methylphenyl)imidazol-2-ylidene]. IPr*^OMe was successfully bound to palladium, and the catalytic activity of the resulting complex [Pd(IPr*^OMe)(acac)Cl] was investigated in Buchwald鈥揌artwig arylamination. Catalytic activity was compared to that of [Pd(IPr*)(acac)Cl].