Description

(S)-2,2'-Diethynyl-1,1'-Binaphthalene CAS NO 426210-82-4 is a high-purity, enantiomerically pure binaphthyl derivative featuring terminal alkyne functional groups. This compound is a critical chiral building block and ligand precursor for asymmetric synthesis and advanced materials research. It is primarily utilized by research chemists and process development scientists in the pharmaceutical, agrochemical, and specialty chemical industries. Its rigid, axially chiral structure makes it invaluable for constructing complex molecular architectures and catalytic systems.

Application

• As a chiral ligand precursor for transition metal catalysis in asymmetric synthesis.
• As a key monomer for the synthesis of chiral conjugated polymers and organic electronic materials.
• In the development of novel Metal-Organic Frameworks (MOFs) and porous materials with chiral selectivity.
• As a building block for molecular machines, switches, and other advanced functional molecules.
• For the preparation of chiral stationary phases used in chromatographic separation techniques.
• In academic and industrial research for exploring new reaction methodologies and catalytic cycles.

Basic Information

Product Name	(S)-2,2'-Diethynyl-1,1'-Binaphthalene
CAS No.	426210-82-4
Molecular Formula	C24H14
Molecular Weight	302.37 g/mol
Synonyms	(S)-2,2'-Diethynyl-1,1'-binaphthyl; (S)-1,1'-Binaphthalene-2,2'-diethyne; (S)-DEBN; (S)-BINOL-diethynyl; (S)-2,2'-Diethynyl-[1,1'-binaphthalene]; (S)-Diethynylbinaphthyl; (Sa)-2,2'-Diethynyl-1,1'-binaphthalene
EINECS	Contact for details

Quality Control

Our (S)-2,2'-Diethynyl-1,1'-Binaphthalene is produced under strict quality management protocols to ensure batch-to-batch consistency and high enantiomeric purity. Each lot undergoes comprehensive analytical characterization, including chiral HPLC for enantiomeric excess (ee) determination, NMR for structural confirmation, and purity assessment. A Certificate of Analysis (COA) detailing all specifications is provided with every shipment to guarantee compliance with your research and development requirements.

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) to prevent oxidation and degradation. Keep the container in a cool, dry, and well-ventilated area.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0% ee
Melting Point	Contact for details
Heavy Metals	< 10 ppm

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