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- W2893744855 endingPage "4174" @default.
- W2893744855 startingPage "4158" @default.
- W2893744855 abstract "Three novel ligands have been prepared by the reactions of 1,1′‐(chlorophosphinediyl)bis(1 H ‐pyrrole) with either 2‐pyridinemethanol or 2,6‐pyridinedimethanol or the reaction of 1,1′‐biphenyl‐2,2′‐diyl phosphorochloridite with 2‐pyridinemethanol. Measurement of | 1 J P–Se | values demonstrate that the phosphite donor is less basic than the phosphoramidite donors. Coordination preferences of the ligands in octahedral cis ‐tetracarbonylmolybdenum(0) and square planar cis ‐dichloropalladium(II) complexes have been evaluated using multinuclear NMR and X‐ray crystallography. Rhodium(I) complexes of the bidentate ligands have been evaluated as catalysts for styrene hydroformylation, and their activities are nearly double those of catalysts containing traditional phosphites. The regioselectivities of the Rh I complexes of the bidentate ligands are not significantly different at 80 °C and 20 atm and are not affected by the addition of a lithium salt. In contrast, changing reaction conditions causes the % n ‐aldehyde to vary from 15 to 50 %. The regioselectivity of the catalyst containing the bidentate phosphoramidite/pyridine ligand was more sensitive to pressure than temperature with both effects being significant." @default.
- W2893744855 created "2018-10-05" @default.
- W2893744855 creator A5011662234 @default.
- W2893744855 creator A5032673421 @default.
- W2893744855 creator A5059972126 @default.
- W2893744855 creator A5083837065 @default.
- W2893744855 creator A5087536988 @default.
- W2893744855 date "2018-09-27" @default.
- W2893744855 modified "2023-10-14" @default.
- W2893744855 title "Comparative Study of Novel Phosphordiamidite and Phosphite Ligands Used in Alkene Hydroformylation; Synthesis, Characterization, Metalation, and Catalytic Evaluation" @default.
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