844658-92-0Relevant articles and documents
Chiral, bridged bis(imidazolin-2-ylidene) complexes of palladium
Schneider, Sabine K.,Schwarz, Jürgen,Frey, Guido D.,Herdtweck, Eberhardt,Herrmann, Wolfgang A.
, p. 4560 - 4568 (2007)
Varieties of chiral, bridged bisimidazolium salts as well as the synthesis of palladium complexes of general formula [bridge {over(NC(H) {double bond, long} C(H)N (R*) C, -)}2 PdBr2] with the corresponding chelating N-heterocyclic carbene ligands is reported. This is the first systematic study of chiral bis(imidazolin-2-ylidene)palladium(II) complexes bearing chiral groups on the endocyclic nitrogens. Structural proof of such a chiral palladium(II) complex is presented by way of an X-ray diffraction study of complex 3a.
Imidazolium-based chiral ionic liquids: Synthesis and application
Suzuki, Yumiko,Wakatsuki, Junichiro,Tsubaki, Mariko,Sato, Masayuki
, p. 9690 - 9700 (2013/10/22)
Synthesis of chiral ionic liquids containing an imidazole nucleus and chiral centers on N-substituents is reported. [(2S,3S)-2,3-Dihydroxybutane-1,4- bis(3-butylimidazolium)]-[bis(trifluoromethanesulfonyl)amide]2 and [(4S,5S)-2-phenyl-1,3-dioxo
Bridged imidazolium salts used as precursors for chelating carbene complexes of palladium in the Mizoroki-Heck reaction
Scherg, Tobias,Schneider, Sabine K.,Frey, Guido D.,Schwarz, Jürgen,Herdtweck, Eberhardt,Herrmann, Wolfgang A.
, p. 2894 - 2907 (2008/03/13)
A variety of chiral and achiral imidazolium salts is synthesized. Methylene-, ethylene-, propylene- and pyridinyl-bridged bis(imidazolium) halides are used to generate the respective free chelating carbenes. The synthesis of palladium complexes of general formula [cis-CH2{NC(H)=C(H)N(R)C} 2PdX2] with these chelating N-heterocyclic carbene ligands is reported. Structural proofs of complexes 28 and 46 are represented by X-ray diffraction studies. Catalytic applications in the Mizoroki-Heck reaction are presented. Georg Thieme Verlag Stuttgart.