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295817

Sigma-Aldrich

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

97%

Synonym(s):

(R)-(+)-(1,1′-Binaphthalene-2,2′-diyl)bis(diphenylphosphine), (R)-(+)-BINAP

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About This Item

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

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.)

functional group

phosphine

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

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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.

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

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Certificates of Analysis (COA)

Lot/Batch Number
SHBP5770
WXBC1838V
SHBC9904V
SHBC6872V
22996JM

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Masanori Kawasaki et al.
Journal of the American Chemical Society, 128(51), 16482-16483 (2006-12-21)
This communication describes studies in which an azo hetero-Diels-Alder adduct was furnished in high regio- and enantioselectivity using azopyridine as a reagent and silver as a catalyst. The obtained hetero-Diels-Alder adduct was easily converted to the corresponding chiral 1,4-diamino alcohol.
Tetrahedron, 50, 335-335 (1994)
Journal of Organometallic Chemistry, 692, 550-550 (2007)
2,2'-bis (diphenylphosphino)-1, 1'-binaphthyl (binap): A new atropisomeric bis (triaryl) phosphine. synthesis and its use in the Rh (l)-catalyzed asymmetric hydrogenation of a-(acylamino) acrylic acids.
Miyashita A, et al.
Tetrahedron, 40(8), 1245-1253 (1984)
Sci. Synth., 1, 113-264 (2002)
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BINAP/SEGPHOS® Ligands and Complexes

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