(R)-(−)-1,1′- Bi-2-naphthyl ditosylate

CAS 137568-37-7C34H26O6S2Chemical Synthesis

(R)-(−)-1,1′- Bi-2-naphthyl ditosylate (CAS: 137568-37-7) is a chiral organic compound with the molecular formula C34H26O6S2 and a molecular weight of 594.70 g/mol. This optically active substance, exhibiting specific rotation [α]20/D -29°, is primarily utilized as a chiral ligand and reagent in asymmetric synthesis. Its high enantiomeric excess (ee: 97%) makes it valuable for creating stereoselective chemical transformations.

Synonyms: C34H26O6S2

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(R)-(−)-1,1′- Bi-2-naphthyl ditosylate (C34H26O6S2) — chemical structure, CAS 137568-37-7; Chemistry, fine chemical supplied by Tech Serve Solutions

Asymmetric SynthesisBINOLsChemical SynthesisChiral CatalystsLigandsand Reagents

01 /Applications

Chiral Ligand in Asymmetric Catalysis

This compound serves as a crucial chiral ligand in various asymmetric catalytic reactions. Its BINOL-derived structure facilitates high stereoselectivity in the formation of chiral molecules.

Reagent for Stereoselective Synthesis

It is employed as a key reagent in synthesizing enantiomerically pure compounds, essential for pharmaceuticals and fine chemicals. The ditosylate moiety offers specific reactivity profiles.

Building Block for Chiral Auxiliaries

The BINOL backbone makes it a suitable precursor for developing advanced chiral auxiliaries. These auxiliaries can be used to control stereochemistry in complex organic syntheses.

02 /Properties

Molecular weight	594.70
Empirical formula	C34H26O6S2
Assay	98%
Optical activity	[α]20/D -29°, c = 1% in chloroform
Optical purity	ee: 97% (HPLC)
Melting point	176-180 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xi
Risk statements (R)	36/37/38
Safety statements (S)	26-36

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

137568-37-7

MDL number

MFCD02683044

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is (R)-(−)-1,1′- Bi-2-naphthyl ditosylate used for?

(R)-(−)-1,1′- Bi-2-naphthyl ditosylate is primarily used as a chiral ligand and reagent in asymmetric synthesis, facilitating stereoselective chemical transformations.

What are the CAS number and formula for (R)-(−)-1,1′- Bi-2-naphthyl ditosylate?

The CAS number is 137568-37-7, and its empirical formula (Hill notation) is C34H26O6S2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies this compound with an assay of 98% and optical purity of 97% ee (HPLC). TSS does not represent this product as USP, BP, or EP grade.

How should (R)-(−)-1,1′- Bi-2-naphthyl ditosylate be handled?

Handle with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, and gloves. Avoid dust formation and inhalation; ensure adequate ventilation. This compound is classified with hazards H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation).