Dimethylaminoalkylchalcogenolate complexes of palladium(II): Synthesis, structures, and their catalytic activity in Suzuki C-C cross-coupling reactions

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• 作者：Dilip K. Paluru ; Sandip Dey ; ^{dsandip@barc.gov.in} ; Amey Wadawale ; Vimal K. Jain ; ^{jainvk@barc.gov.in}
• 关键词：Palladium ; Chalcogenolate ; X-ray ; Suzuki coupling
• 出版年：2013
• 出版时间：15 March, 2013
• 年：2013
• 卷：728
• 期：Complete
• 页码：52-56
• 全文大小：425 K

文摘

The reaction of [PdCl(E^¡ÉN)]_n with AgOAc in methanol afforded the corresponding acetato complexes, [Pd(OAc)(E^¡ÉN)]_n (E^¡ÉN/n?=?ECH₂CH₂NMe₂/3; ECH₂CH₂CH₂NMe₂/2 (E?=?S or Se)). The molecular structures of [Pd(OAc)(ECH₂CH₂NMe₂)]₃ were established by single crystal X-ray diffraction analyses. The trimeric structures comprise of three palladium atoms bridged through chalcogen atoms of the chelating chalcogenolate ligand forming a twisted six-membered Pd₃E₃ ring. The acetato-ligand acts in a monodentate fashion. The catalytic activity of [PdCl(E^¡ÉN)]_n and [Pd(OAc)(E^¡ÉN)]_n in Suzuki C-C cross coupling reactions has been investigated. The dimeric acetato complexes showed the best activity in dioxane.