Rhodium(I) complexes with phosphinooxathiane (POT) and phophinooxazolidine (POZ) ligands: the crystal structures of [(POT)Rh(CO)Cl] and [(POZ)Rh(CO)Cl]
摘要:
The reactions of two equivalents of the ligands POT or POZ with one equivalent of the rhodium complex [Rh(mut-Cl)(CO)(2)](2) afford the complexes [(POT)Rh(CO)Cl] (1) and [(POZ)Rh(CO)Cl] (2), respectively. The crystal structures of both complexes have been determined showing the rhodium centers to be into slightly distorted square planar environments. Preliminary screening of the catalytic systems POT/Rh and POZ/Rh in the asymmetric hydroformylation of styrene has been carried out. (C) 2004 Elsevier B.V. All rights reserved.
New chiral phosphinooxathiane ligands for palladium-catalyzed asymmetric allylic substitution reactions
作者:Hiroto Nakano、Yuko Okuyama、Hiroshi Hongo
DOI:10.1016/s0040-4039(00)00674-2
日期:2000.6
New chiralligands, phosphinooxathianes 3 and 6, were synthesized easily and their ability as ligands were examined in Pd-catalyzed asymmetricallylic alkylation of 1,3-diphenyl-2-propenyl acetate with dimethyl malonate to give an allylation product. Enantiomeric excess of up to 94% has been obtained using 1 mol% of [PdCl(η3-C3H5)]2 and 2 mol% of 3.
可以轻松合成新的手性配体膦氧杂蒽3和6,并在Pd催化的1,3-二苯基-2-丙烯基乙酸丙二酯与丙二酸二甲酯的钯催化不对称烯丙基烷基化反应中检测了它们作为配体的能力,从而得到了烯丙基化产物。使用1摩尔%的[的PdCl(η已获得对映体过量达到94%的3 -C 3 H ^ 5)] 2和2%(摩尔)的3。
Rhodium(I) complexes with phosphinooxathiane (POT) and phophinooxazolidine (POZ) ligands: the crystal structures of [(POT)Rh(CO)Cl] and [(POZ)Rh(CO)Cl]
作者:Gustavo Rı́os-Moreno、Rubén A. Toscano、Rocío Redón、Hiroto Nakano、Yuko Okuyama、David Morales-Morales
DOI:10.1016/j.ica.2004.09.006
日期:2005.1
The reactions of two equivalents of the ligands POT or POZ with one equivalent of the rhodium complex [Rh(mut-Cl)(CO)(2)](2) afford the complexes [(POT)Rh(CO)Cl] (1) and [(POZ)Rh(CO)Cl] (2), respectively. The crystal structures of both complexes have been determined showing the rhodium centers to be into slightly distorted square planar environments. Preliminary screening of the catalytic systems POT/Rh and POZ/Rh in the asymmetric hydroformylation of styrene has been carried out. (C) 2004 Elsevier B.V. All rights reserved.
Palladium-Catalyzed Asymmetric Allylic Substitution Reactions Using New Chiral Phosphinooxathiane Ligands