Description

1R,5R,6R-(+)-1,6-Bis(Diphenylphosphinoxy)Spiro[4.4]Nonane is a high-value, chiral organophosphorus compound with a unique spirocyclic backbone. This compound matters as a sophisticated ligand and chiral auxiliary, enabling precise stereocontrol in asymmetric synthesis and catalysis. It is primarily needed by research and development teams in the pharmaceutical and fine chemical industries for the development of novel active pharmaceutical ingredients (APIs) and advanced materials.

Application

• As a chiral ligand in transition metal-catalyzed asymmetric hydrogenation and cross-coupling reactions.
• As a key building block or chiral auxiliary in the stereoselective synthesis of complex pharmaceutical intermediates.
• In the development of novel catalysts for the production of enantiomerically pure compounds.
• For research applications in asymmetric organocatalysis and the study of stereoselective reaction mechanisms.
• In the fine chemical industry for the synthesis of specialty chemicals requiring high enantiomeric excess.

Basic Information

Product Name	1R,5R,6R-(+)-1,6-Bis(Diphenylphosphinoxy)Spiro[4.4]Nonane
CAS No.	197159-86-7
Molecular Formula	C33H32O2P2
Molecular Weight	522.55 g/mol
Synonyms	(+)-1,6-Bis(Diphenylphosphinoxy)Spiro[4.4]Nonane; (1R,5R,6R)-1,6-Bis(Diphenylphosphinoxy)Spiro[4.4]Nonane; Spiro[4.4]nonane-1,6-diyl bis(diphenylphosphinite); (R,R,R)-SKP Ligand; Chiral Spiro Diphosphinite Ligand; (1R,5R,6R)-1,6-Bis(diphenylphosphanyloxy)spiro[4.4]nonane
EINECS	Contact for details

Quality Control

Our 1R,5R,6R-(+)-1,6-Bis(Diphenylphosphinoxy)Spiro[4.4]Nonane is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is characterized by advanced analytical techniques including NMR, HPLC, and chiral analysis. A comprehensive Certificate of Analysis (COA) detailing purity, enantiomeric excess, and identity is provided with every shipment to support your R&D and quality assurance requirements.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store the product under an inert atmosphere (e.g., nitrogen or argon) at a controlled room temperature (15-25°C) in a cool, dry place. Due to its sensitivity to oxidation, containers should be flushed with inert gas after each opening.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0%
Melting Point	Contact for details
Specific Rotation	Contact for details

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