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HomeProduct name list1,1'-Bi-2-naphthol

1,1'-Bi-2-naphthol

Synonym(s):BINOL;(±)-1,1′-Binaphthalene-2,2′-diol;(±)-2,2′-Dihydroxy-1,1′-dinaphthyl;2,2′-Dihydroxybinaphthalene;2,2′-Dihydroxydinaphthyl

  • CAS NO.:602-09-5
  • Empirical Formula: C20H14O2
  • Molecular Weight: 286.32
  • MDL number: MFCD00004068
  • EINECS: 210-014-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-12-18 13:37:16
1,1'-Bi-2-naphthol Structural

What is 1,1'-Bi-2-naphthol?

Chemical properties

1,1′-Bi-2-naphthol is a white to yellowish gray crystalline powder. It is known to be soluble in methanol. Store in a cool and dark place at ambient temperatures for best keeping.

The Uses of 1,1'-Bi-2-naphthol

1,1'-Bi-2-naphthol is used as a chiral ligand in alkynylation, Diels-Alder and assymmetric Michael addition reactions.

The Uses of 1,1'-Bi-2-naphthol

(+/-)-1,1'-Bi(2-naphthol) acts as chiral separation agents. It is widely used in chiral liquid crystal,medicines,spices etc,.

The Uses of 1,1'-Bi-2-naphthol

Chiral ligand and auxiliary for asymmetric Michael addition reaction; enantioselective Diels-Alder reaction; alkynylation.

Definition

ChEBI: (S)-(-)-1,1'-Bi-2-naphthol is a member of naphthols.

Synthesis Reference(s)

Tetrahedron, 48, p. 9483, 1992 DOI: 10.1016/S0040-4020(01)88316-2
Tetrahedron Letters, 24, p. 3261, 1983 DOI: 10.1016/S0040-4039(00)88151-4

Safety Profile

1,1'-Bi-2-naphthol is incompatible with oxidizing agents and should not be stored or handled near them. Poison by ingestion and causes skin irritation along with serious eye irritation. When heated to decomposition it emits acrid smoke and irritatingvapors.

Purification Methods

Crystallise the binaphthol from toluene or *benzene (10mL/g). When crystallised from chlorobenzene it has m 238o. Its solubility in dioxane is 5%. [Beilstein 6 IV 7020.]

Properties of 1,1'-Bi-2-naphthol

Melting point: 215-218 °C
Boiling point: 388.69°C (rough estimate)
Density  1g/cm
refractive index  1.7580 (estimate)
storage temp.  Inert atmosphere,Room Temperature
solubility  Soluble in dioxane (50 mg/mL).
solubility  dioxane: 50 mg/mL, clear
pka 8.29±0.50(Predicted)
form  Powder
color  White to beige
Water Solubility  insoluble
Merck  14,1226
BRN  997518
CAS DataBase Reference 602-09-5(CAS DataBase Reference)
NIST Chemistry Reference 1,1'-Bi-2-naphthol(602-09-5)
EPA Substance Registry System [1,1'-Binaphthalene]-2,2'-diol (602-09-5)

Safety information for 1,1'-Bi-2-naphthol

Signal word Danger
Pictogram(s)
ghs
Skull and Crossbones
Acute Toxicity
GHS06
GHS Hazard Statements H301:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
Precautionary Statement Codes P302+P352:IF ON SKIN: wash with plenty of soap and water.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for 1,1'-Bi-2-naphthol

InChIKey PPTXVXKCQZKFBN-UHFFFAOYSA-N

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