Description

1,1-Binaphthalene-2,2-Dithiol, (1R)- is a chiral, sulfur-containing binaphthyl derivative that serves as a versatile and highly valuable ligand and building block in asymmetric synthesis. Its core value lies in its ability to coordinate with various metals to form chiral catalysts, enabling the production of enantiomerically pure compounds critical to modern pharmaceuticals and advanced materials. This product is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity chiral auxiliaries for stereoselective transformations.

Application

• As a chiral ligand for transition metal catalysis (e.g., palladium, rhodium, copper) in asymmetric C–C and C–heteroatom bond-forming reactions.
• Building block for the synthesis of complex chiral phosphine and phosphoramidite ligands used in industrial-scale asymmetric hydrogenation.
• Precursor in the development of chiral stationary phases (CSPs) for analytical and preparative chromatographic separation of enantiomers.
• Key intermediate in the research and production of enantiopure active pharmaceutical ingredients (APIs) and agrochemicals.
• Utilized in material science for the synthesis of chiral polymers and molecular devices with specific optical properties.
• Acts as a chelating agent in organometallic chemistry and catalysis research.

Basic Information

Item	Detail
Product Name	1,1-Binaphthalene-2,2-Dithiol, (1R)-
CAS No.	124414-37-5
Molecular Formula	C₂₀H₁₄S₂
Molecular Weight	318.45 g/mol
Synonyms	(R)-1,1'-Binaphthalene-2,2'-dithiol; (R)-2,2'-Dimercapto-1,1'-binaphthyl; (R)-BINOL-Dithiol; (R)-BINASH; (R)-2,2'-Dithio-1,1'-binaphthyl; (1R)-[1,1'-Binaphthalene]-2,2'-dithiol; (R)-(-)-1,1'-Binaphthalene-2,2'-dithiol
EINECS	Contact for details

Quality Control

Our 1,1-Binaphthalene-2,2-Dithiol, (1R)- is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chiral purity determination by HPLC, to ensure it meets the high standards required for advanced synthetic applications. A Certificate of Analysis (COA) detailing identity, purity, and chiral excess is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) at a controlled room temperature (15-25°C) in a cool, dry, and well-ventilated area. Due to its sensitivity to oxidation and light, prolonged exposure to air or light should be avoided.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Chiral Purity (HPLC)	≥ 99.0% ee
Melting Point	Contact for details
Heavy Metals	< 20 ppm
Residual Solvents	Complies with ICH guidelines

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.