rac-[1,1’-Binaphthalene]-2,2’-diol

• CAT Number: R014388
• CAS Number: 602-09-5
• Molecular Formula: C20H14O2
• Molecular Weight: 286.33
• Purity: ≥95%
• Synonyms: 1,1’-Bi-2-naphthol; (RS)-1,1’-Bi-2,2’-naphthol; (RS)-1,1’-Bi-2-naphthol; (±)-1,1’-Bi-2-naphthol; (±)-1,1’-Binaphthalene-2,2’-diol
• Storage: -20°C
• IUPAC Name: 1-(2-hydroxynaphthalen-1-yl)naphthalen-2-ol
• InChI: 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
• InChIKey: PPTXVXKCQZKFBN-UHFFFAOYSA-N
• SMILES: C1=CC=C2C(=C1)C=CC(=C2C3=C(C=CC4=CC=CC=C43)O)O

rac-[1,1’-Binaphthalene]-2,2’-diol（Cat No.:R014388）, commonly known as rac-BINOL, is the racemic form of BINOL, a chiral diol consisting of two naphthalene rings connected at the 1-position, each bearing a hydroxyl group at the 2-position. It is a key compound in asymmetric synthesis and chiral ligand design, particularly for enantioselective catalysis. While the enantiopure forms (R or S) are widely used in enantioselective transformations, the racemic mixture is useful in resolving enantiomers or in non-stereospecific applications. BINOL’s rigid, axially chiral structure supports stable complexation with metals, aiding stereocontrol in catalytic processes.