191427-03-9Relevant articles and documents
C1-Symmetric Binap Derivative Featuring Single Diferrocenylphosphino-Donor Moiety
Enomoto, Yuuki,Ichiryu, Hiroki,Hu, Hao,Ura, Yasuyuki,Ogasawara, Masamichi
supporting information, p. 1020 - 1024 (2021/05/07)
A C1-symmetric chiral bisphosphine, FcPh-Binap (1), which possesses a single diferrocenylphosphino moiety together with a conventional Ph2P-substituent, was prepared in enantiomerically pure forms. Ligand 1 is sterically less demanding than Fc-Segphos (A)
Palladium complexes with chiral imidazole ligands as potential catalysts for asymmetric C[sbnd]C coupling reactions
Zawartka, Wojciech,Gniewek, Andrzej,Trzeciak, Anna M.
, p. 595 - 599 (2016/11/30)
Two palladium complexes of the type [Pd(im)2Cl2] containing chiral imidazole ligands (im?=?1-bornyloxymethylene imidazole, 1-fenchyloxymethylyne imidazole) were synthesized and structurally characterized. The square planar structure of one of the complexes was confirmed by the X-ray analysis. The new palladium complexes were tested as catalysts in various C[sbnd]C bond forming reactions, namely Suzuki–Miyaura, carbonylative Suzuki–Miyaura, asymmetric Heck-type coupling reactions and asymmetric conjugate addition of phenylboronic acid to heterocyclic acceptors. In all the reactions the cross-coupling products were obtained with high yield and selectivity under mild conditions. In case of coupling of 2,3-dihydrofuran with phenylboronic acid ee value ca. 10 was observed.
Synthesis, characterization and first application of chiral C2-symmetric bis(phosphinite)-Pd(II) complexes as catalysts in asymmetric intermolecular Heck reactions
Karaka?, Duygu Elma,Durap, Feyyaz,Aydemir, Murat,Baysal, Akin
, p. 193 - 198 (2016/04/05)
A series of new chiral C2-symmetric bis(phosphinite) ligands and their palladium(II) complexes have been synthesized and for the first time used as catalysts in the palladium-catalysed asymmetric intermolecular Heck coupling reactions of 2,3-dihydrofuran with iodobenzene or aryl triflate. Under optimized conditions, products were obtained with high conversions and moderate to good enantioselectivities. The new C2-symmetric bis(phosphinite) ligands and their palladium(II) complexes were characterized using multinuclear NMR and Fourier transform infrared spectroscopies and elemental analysis.