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246948

Sigma-Aldrich

(R)-(+)-1,1′-Bi(2-naphthol)

99%

Synonym(s):

(+)-2,2′-Dihydroxy-1,1′-dinaphthyl, (R)-(+)-1,1′-Binaphthalene-2,2′-diol, (R)-BINOL

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About This Item

Linear Formula:
HOC10H6C10H6OH
CAS Number:
18531-94-7
Molecular Weight:
286.32
Beilstein:
3616837
MDL number:
MFCD00004068
UNSPSC Code:
12352104
PubChem Substance ID:
24854837
EC Index Number:
606-048-4
NACRES:
NA.22

Assay

99%

form

solid

optical activity

[α]21/D +34°, c = 1 in THF

optical purity

ee: 99% (HPLC)

mp

208-210 °C (lit.)

SMILES string

Oc1ccc2ccccc2c1-c3c(O)ccc4ccccc34

InChI

1S/C20H14O2/c21-17-11-9-13-5-1-3-7-15(13)19(17)20-16-8-4-2-6-14(16)10-12-18(20)22/h1-12,21-22H

InChI key

PPTXVXKCQZKFBN-UHFFFAOYSA-N

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Application

A chiral auxiliary used in the catalytic asymmetric oxidation of sulfides to sulfoxides. Chiral lanthanide triflates formed from binaphthol serve as catalysts for asymmetric Diels-Alder reactions. Derivatives of binaphthol have recently found use in asymmetric Claisen rearrangements and asymmetric epoxidations. The lithium aluminum hydride derivative of these diols (BINAP-H) has been used extensively for the reduction of ketones.
Chiral binapthol imminium salt precursor. Salts were used for an asymmetric epoxidation of olefins.

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H315,H319

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

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
MKCQ1892
MKCQ2475
MKCN9308
MKCM5928
MKCM3746

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(S)-(−)-1,1′-Binaphthyl-2,2′-diamine 99%

Sigma-Aldrich

382434

(S)-(−)-1,1′-Binaphthyl-2,2′-diamine

Asymmetric aza-Diels-Alder reaction catalyzed by boron reagent: Effect of biphenol and binaphthol ligand.
Hattori, K. Yamamoto, H.
Synlett, 1993(02), 129-129 (1993)
Asymmetric Diels-Alder reactions catalyzed by chiral lanthanide (III) trifluoromethanesulfonates. Unique structure of the triflate and stereoselective synthesis of both enantiomers using a single chiral source and a choice of achiral ligands.
S. Kobayashi et al.
Tetrahedron, 50(40), 11623-11623 (1994)
Catalytic asymmetric oxidation of sulfides to sulfoxides with tert-butyl hydroperoxide using binaphthol as a chiral auxiliary.
Komatsu N, et al.
The Journal of Organic Chemistry, 58, 4529-4529 (1993)
Catalytic asymmetric epoxidation with (Salen) manganese (III) complex bearing binaphthyl groups of axial chirality.
Sasaki, H. et al.
Synlett, 1993(04), 300-300 (1993)
Philip C Bulman Page et al.
The Journal of organic chemistry, 72(12), 4424-4430 (2007-05-18)
A series of binaphthalene-fused azepinium salts has been generated and used as organocatalysts in the asymmetric epoxidation of unfunctionalized alkenes, giving rise to ees of up to 84%.
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