Description

(R)-(+)-2,2′-Bis[di(3,5-dimethoxyphenyl)phosphino]-6,6′-dimethoxy-1,1′-biphenyl, 98% (R)-ECNU-Phos is a highly specialized chiral bisphosphine ligand with a molecular formula of C₄₆H₄₈O₁₀P₂ and CAS number 1448722-98-2. This compound, also known as (R)-ECNU-Phos, is characterized by its enantiomerically pure (R)-configuration and is widely utilized in asymmetric catalysis due to its electron-rich and sterically demanding structure. The ligand features multiple dimethoxyphenyl groups, enhancing its ability to coordinate with transition metals and facilitate stereoselective transformations. With a purity of 98%, this product is rigorously tested for quality, ensuring optimal performance in synthetic applications. Ideal for researchers in organic chemistry and catalysis, it is supplied as a fine powder or crystalline solid, stored under inert conditions to maintain stability.

Properties

• CAS Number: 1448722-98-2
• Complexity: 991
• IUPAC Name: [2-[2-bis(3,5-dimethoxyphenyl)phosphanyl-6-methoxy-phenyl]-3-methoxy-phenyl]-bis(3,5-dimethoxyphenyl)phosphane
• InChI: InChI=1S/C46H48O10P2/c1-47-29-17-30(48-2)22-37(21-29)57(38-23-31(49-3)18-32(24-38)50-4)43-15-11-13-41(55-9)45(43)46-42(56-10)14-12-16-44(46)58(39-25-33(51-5)19-34(26-39)52-6)40-27-35(53-7)20-36(28-40)54-8/h11-28H,1-10H3
• InChI Key: SWMJWTAAPZTGDO-UHFFFAOYSA-N
• Exact Mass: 822.27227172
• Molecular Formula: C46H48O10P2
• Molecular Weight: 822.8
• SMILES: COC1=C(C(=CC=C1)P(C2=CC(=CC(=C2)OC)OC)C3=CC(=CC(=C3)OC)OC)C4=C(C=CC=C4P(C5=CC(=CC(=C5)OC)OC)C6=CC(=CC(=C6)OC)OC)OC
• Topological: 92.3
• Monoisotopic Mass: 822.27227172
• Synonyms: 1448722-98-2, (R)-(+)-2,2′-Bis[di(3,5-dimethoxyphenyl)phosphino]-6,6′-dimethoxy-1,1′-biphenyl, 98% (R)-ECNU-Phos, 1448723-00-9, (S)-2,2′-Bis[di(3,5-dimethoxyphenyl)phosphino]-6,6′-dimethoxy-1,1′-biphenyl, (R)-2,2′-Bis[di(3,5-dimethoxyphenyl)phosphino]-6,6′-dimethoxy-1,1′-biphenyl, (R)-(+)-2,2′-Bis[di(3,5-dimethoxyphenyl)phosphino]-6,6′-dimethoxy-1,1′-biphenyl, (S)-ECNU-Phos/(S)-(-)-2,2′-Bis[di(3,5-dimethoxyphenyl)phosphino]-6,6′-dimethoxy-1,1′-biphenyl, G65460, G70939, (6,6′-Dimethoxy-[1,1′-biphenyl]-2,2′-diyl)bis(bis(3,5-dimethoxyphenyl)phosphane), [2-[2-bis(3,5-dimethoxyphenyl)phosphanyl-6-methoxyphenyl]-3-methoxyphenyl]-bis(3,5-dimethoxyphenyl)phosphane

Application

(R)-ECNU-Phos is a versatile chiral ligand employed in asymmetric hydrogenation, C-C bond formation, and other transition-metal-catalyzed reactions. Its electron-rich phosphine groups and rigid biphenyl backbone make it particularly effective for enantioselective synthesis of pharmaceuticals and fine chemicals. Researchers value this ligand for its high stereocontrol and compatibility with a wide range of metal catalysts, including rhodium and ruthenium complexes.

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