18545-28-3Relevant articles and documents
Asymmetric hydroformylation of vinyl acetate with BINAP-rhodium(I) complexes
Hoegaerts, Dirk,Jacobs, Pierre A.
, p. 3039 - 3043 (1999)
Complexes of (R)-BINAP (BINAP=2,2'-bis(diphenylphosphino)-1,1'-binaphthyl) derived from the available rhodium precursors Rh(acac)(CO)2 and [Rh(μ-OMe)(cod)]2 are used for the asymmetric hydroformylation of vinyl acetate. Enantiomeric excesses of up to 60% are achieved with regioselectivities of up to 99%. Only a BINAP/Rh ratio of 2 is required. Effects of pressure and temperature on catalyst stability, enantio- and chemoselectivity are discussed.
New diphosphite ligands for enantioselective asymmetric hydroformylation
Zou, Yaping,Yan, Yongjun,Zhang, Xumu
, p. 4781 - 4784 (2007)
A series of new diphosphite ligands have been easily prepared from BINOL derivatives; moderate enantioselectivities (up to 80% ee) and excellent regioselectivities (b/l up to 98/2) have been achieved in the Rh-catalyzed asymmetric hydroformylation of vinyl acetate.
Ferrocene-based bidentate phosphonite ligands for rhodium(I)-catalyzed enantioselective hydroformylation
Peng, Xingao,Wang, Zheng,Xia, Chungu,Ding, Kuiling
, p. 4862 - 4864 (2008)
A new class of chiral modular bidentate phosphonite ligands has been synthesized in good overall yields by using cheap trans-1,2-diaminocyclohexane and ferrocene as starting materials, and applied in the Rh(I)-catalyzed asymmetric hydroformylation of vinyl acetate and styrene to afford the corresponding optically active aldehydes with good regioselectivity (up to 16.9 b/l ratio) and moderate to good enantioselectivity (up to 83% ee). The substituents on the backbone of the ligands are found to exhibit a remarkable effect on both the regio- and enantioselectivity of the catalysis.
Regioselective and rapid hydroformylation of vinyl acetate catalyzed by rhodium complex modified bulky phosphite ligand
Dabbawala, Aasif A.,Jasra, Raksh V.,Bajaj, Hari C.
, p. 616 - 619 (2010)
The regioselective hydroformylation of vinyl acetate catalyzed by rhodium complex of monodentate phosphite ligand, tri-1-naphthylphosphite P(ONp)3, was investigated. The P(ONp)3 ligand exhibited a considerable impact on the rate and selectivity of hydroformylation of vinyl acetate, notably high turnover frequency (up to 11,520 h-1) with excellent regioselectivity (99%) to the preferred branched aldehyde and high selectivity to aldehyde (93%). Significant results with the substrate having less reactive character toward hydroformylation and practically easy accessibility of the ligand (synthesized from inexpensive compound, 1-naphthol) make this system very attractive.
Tetradentate nitrogen phosphine ligand and preparation method and application thereof
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Paragraph 0057; 0060-0061, (2021/04/07)
The invention provides a novel tetradentate nitrogen phosphine ligand as well as a preparation method and an application thereof in an unsaturated olefin hydroformylation reaction. The tetradentate nitrogen phosphine ligand is used for the hydroformylation reaction of olefin, so that the catalyst is more stable in the reaction, is not easy to inactivate at high temperature (more than 200 DEG C), the pressure of synthesis gas required by the reaction is lower, the reaction positive-to-negative ratio is improved, and the selectivity of a main product can be effectively improved.
Phosphine ligand compound and preparation method thereof, catalyst composition and application thereof, and vinyl acetate hydroformylation method
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Paragraph 0103-0120, (2020/07/13)
The invention relates to the field of vinyl acetate hydroformylation, and discloses a phosphine ligand compound and a preparation method thereof, a catalyst composition and application thereof, and avinyl acetate hydroformylation method. The phosphine ligand compound has a structure shown as a formula (1); wherein A is selected from a substituted or unsubstituted C1-C20 alkylene group; B1 and B2are each independently selected from a substituted or unsubstituted biphenyl group; substituent groups optionally existing in A, B1 and B2 are respectively and independently selected from at least oneof C1-C20 alkyl, halogen, C1-C10 alkoxyl, hydroxyl, carboxyl and aldehyde group; and the provided phosphine ligand compound can effectively improve the conversion rate of vinyl acetate and the selectivity of 2-acetoxy propionaldehyde.
Phosphine ligand compound and preparation method thereof, catalyst composition and application thereof and vinyl acetate hydroformylation method (by machine translation)
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Paragraph 0106-0127, (2020/07/13)
The invention relates to the field of vinyl acetate hydroformylation, and discloses a phosphine ligand compound and a preparation method thereof, a catalyst composition and application of the phosphine ligand compound and vinyl acetate hydroformylation. The phosphine ligand compound has the structure shown in the formula (1); and A and B1 And B2 C is each independently selected from substituted or unsubstituted C1 - C20 Alkylene; and A, B1 And B2 The optionally present substituents are each independently selected from C. 1 - C20 Alkyl, halogen and C1 - C10 The phosphorus ligand compound provided by the invention can effectively improve the vinyl acetate conversion rate and 2 - acetoxy propionaldehyde selectivity. (by machine translation)
Phosphine ligand compound and preparation method thereof, catalyst composition and application thereof, and vinyl acetate hydroformylation method
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Paragraph 0116-0117; 0132-0133; 0137, (2020/07/13)
The invention relates to the field of vinyl acetate hydroformylation, and discloses a phosphine ligand compound and a preparation method thereof, a catalyst composition and application thereof, and avinyl acetate hydroformylation method. The phosphine ligand compound has a structure shown as a formula (1); wherein A is selected from substituted or unsubstituted phenyl and substituted or unsubstituted biphenyl; B1 and B2 are each independently selected from a substituted or unsubstituted biphenyl group; substituent groups optionally existing in A, B1 and B2 are respectively and independently selected from at least one of C1-C20 alkyl, halogen, C1-C10 alkoxyl, hydroxyl, carboxyl and aldehyde group; and the provided phosphine ligand compound can effectively improve the conversion rate of vinyl acetate and the selectivity of 2-acetoxy propionaldehyde.
Phosphine ligand compound and preparation method thereof, catalyst composition and application thereof and vinyl acetate hydroformylation method (by machine translation)
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Paragraph 0094-0095; 0106-0107; 0111, (2020/07/13)
The invention relates to the field of vinyl acetate hydroformylation, and discloses a phosphine ligand compound and a preparation method thereof, a catalyst composition and application of the phosphine ligand compound and vinyl acetate hydroformylation. The phosphine ligand compound has the structure shown in the formula (1); wherein A is selected from substituted or unsubstituted phenyl; B1 And B2 C is each independently selected from substituted or unsubstituted C1 - C20 Alkylene; A, B1 And B2 The optionally present substituents are each independently selected from C. 1 - C20 Alkyl, halogen and C1 - C10 The phosphorus ligand compound provided by the invention can effectively improve the vinyl acetate conversion rate and 2 - acetoxy propionaldehyde selectivity. (by machine translation)
Phosphine ligand compound and preparation method thereof, catalyst composition and application thereof and vinyl acetate hydroformylation method (by machine translation)
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Paragraph 0112-0117, (2020/07/13)
The invention relates to the field of vinyl acetate hydroformylation, and discloses a phosphine ligand compound and a preparation method thereof, a catalyst composition and application of the phosphine ligand compound and vinyl acetate hydroformylation. The phosphine ligand compound has the structure shown in formula (1); wherein A is selected from substituted or unsubstituted phenyl; R1 , R2 , R3 And R4 C is each independently selected from substituted or unsubstituted C1 - C20 Alkyl, substituted or unsubstituted phenyl; A, R1 , R2 , R3 And R4 The optionally present substituents are each independently selected from C. 1 - C20 Alkyl, halogen and C1 - C10 The phosphorus ligand compound provided by the invention can effectively improve the vinyl acetate conversion rate and 2 - acetoxy propionaldehyde selectivity. (by machine translation)
