Találati lista | Tudóstér

001-es BibID:	BIBFORM113238
035-os BibID:	(cikkazonosító)122723 (Scopus)85154548415 (WoS)000991079500001
Első szerző:	Farkas Gergely
Cím:	Application of alkane-diyl based chiral phosphine-aminophosphine (P-NP) and thioether-aminophosphine (S-NP) ligands in Rh-catalyzed asymmetric hydrogenation / Gergely Farkas, Zsófia Császár, Evelin Tóth-Farsang, Attila C. Bényei, József Bakos
Dátum:	2023
ISSN:	0022-328X
Megjegyzések:	Rhodium(I)-complexes of five new alkane-diyl based phosphine-aminophosphine (P,NP) type chiral ligands (Ph2PCH(CH3)(CH2)nCH(CH3)N(R1)PR2 2 (n = 0-2, R1 = Me, Et, iPr, R2 = Ph, Cy)) and a thioetheraminophosphine type compound ((S,S)-PhSCH(CH3)(CH2)CH(CH3)N(iPr)PPh2) have been synthesized. The investigation of the coordination chemistry of structurally analogous systems by NMR and IR spectroscopy and in one case by X-ray crystallography enabled the comparison of the effect of (i) the ligand backbone length, (ii) the N-substituent, (iii) the type of the coordinating functionality and (iv) the P-substituent in aminophosphine moiety on the stereo-electronic properties of the complexes. The novel Rh-compounds were tested in the asymmetric hydrogenation of a broad range of prochiral substrates including dimethyl itaconate, dehydroaminoacid derivatives and ?,?-unsaturated enol ester phosphonates. Catalysts modified by the pentane-2,4-diyl based phosphine-aminophosphine ligands provided superior catalytic performance compared to the analogous butane- and hexane-diyl based systems and thioether containing compound. Most importantly, by the proper choice of the N-substituent outstanding enantioselectivities could be obtained in the asymmetric hydrogenation of acetamidocinnamic acid derivatives (up to 98% ee) and enol ester phosphonates (up to 97% ee).
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal Of Organometallic Chemistry. - 994 (2023), p. 1-8. -
További szerzők:	Császár Zsófia Tóth-Farsang Evelin Bényei Attila (1962-) (vegyész) Bakos József (gyógyszerész)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: