295817

(R)-(+)-2,2′-Bis(diphenylphosphino)-1,1′-binaphthalene

97%

• Synonym(s): (R)-(+)-(1,1′-Binaphthalene-2,2′-diyl)bis(diphenylphosphine), (R)-(+)-BINAP
• Linear Formula: [(C₆H₅)₂PC₁₀H₆-]₂
• CAS Number: 76189-55-4
• Molecular Weight: 622.67
• MDL number: MFCD00010805
• UNSPSC Code: 12352005
• PubChem Substance ID: 24857814
• NACRES: NA.22

Properties

• Assay: 97%
• form: solid
• optical activity: [α]19/D +233°, c = 0.3 in toluene
• optical purity: ee: 99% (HPLC)
• mp: 239-241 °C (lit.)
• SMILES string: c1ccc(cc1)P(c2ccccc2)c3ccc4ccccc4c3-c5c(ccc6ccccc56)P(c7ccccc7)c8ccccc8
• InChI: 1S/C44H32P2/c1-5-19-35(20-6-1)45(36-21-7-2-8-22-36)41-31-29-33-17-13-15-27-39(33)43(41)44-40-28-16-14-18-34(40)30-32-42(44)46(37-23-9-3-10-24-37)38-25-11-4-12-26-38/h1-32H
• InChI key: MUALRAIOVNYAIW-UHFFFAOYSA-N

Description

General description

(R)-(+)-BINAP is a chiral diphosphine ligand that exhibits high enantioselectivity and reactivity in various organic reactions.

(R)-(+)-2,2′-Bis(diphenylphosphino)-1,1′-binaphthalene is an axially dissymmetric bis(triaryl)phosphine ligand for asymmetric reactions.

Application

Useful ligand for transition metal catalyzed asymmetric reactions, including hydrogenation and disilylation. 2,2′-Bis(diphenylphosphino)-1,1′-binaphthyl and its rhodium and ruthenium derivatives are highly selective homogeneous catalysts used for the reduction of aryl ketones, β-keto esters, and α-amino ketones. They have also been used for asymmetric hydrogenation and hydroformylation of olefins, asymmetric Heck reactions, and asymmetric isomerizations of allyls.
Complex with Ag(I) used to catalyze an asymmetric aldol reaction between alkenyl trichloroacetates and aldehydes. Also used with Ag(I) to catalyze an enantioselective hetero-Diels-Alder reaction of azo compounds.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves