Palladium(II) Complexes with N-Phosphine Oxide-Substituted Imidazolylidenes (Poxlms): Coordination Chemistry and Catalysis

被引：12

作者：

Branzi, Lorenzo ^{[1
]}

Franco, Dario ^{[1
]}

Baron, Marco ^{[1
]}

Armelao, Lidia ^{[1
,2
]}

Rancan, Marzio ^{[2
]}

Sgarbossa, Paolo ^{[3
]}

Biffis, Andrea ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Sci Chim, Via F Marzolo 1, I-35131 Padua, Italy

[2] ICMATE CNR, Via F Marzolo 1, I-35131 Padua, Italy

[3] Univ Padua, Dipartimento Ingn Ind, Via F Marzolo 9, I-35131 Padua, Italy

来源：

ORGANOMETALLICS | 2019年 / 38卷 / 10期

关键词：

HETEROCYCLIC-CARBENE COMPLEXES; TRANSITION-METAL-COMPLEXES; FRUSTRATED LEWIS PAIRS; SUZUKI-MIYAURA; (NHC)PD(ALLYL)CL NHC; LIGANDS SYNTHESIS; PHOSPHANYL; ETHYLENE; COPOLYMERIZATION; REACTIVITY;

D O I：

10.1021/acs.organomet.9b00185

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The coordination chemistry of N-phosphine oxide-substituted imidazolylidenes (PoxIms) as heteroditopic, hemilabile ligands toward palladium(II) has been investigated. Both bis-carbene and mono-carbene complexes can be prepared, but the latter are accessible only in the presence of ancillary ligands that do not easily dissociate from the metal center. The phosphanyl oxide group was found to often coordinate to palladium(II) as well, though this interaction appears to be weak as this group is indeed easily replaced by, e.g., a solvent molecule. The resulting complexes have been tested as catalysts in the low-temperature Suzuki reaction of 4-chloroanisole with phenylboronic acid and they show promise for further optimization studies.

引用

页码：2298 / 2306

页数：9

共 63 条

[1] N-Phosphanyl- and N,N′-Diphosphanyl-Substituted N-Heterocyclic Carbene Chromium Complexes: Synthesis, Structures, and Catalytic Ethylene Oligomerization [J].