Description

(4R)-2-[2-[Bis[4-(Trifluoromethyl)Phenyl]Phosphino]-5-(Trifluoromethyl)Phenyl]-4-tert-Butyl-4,5-Dihydrooxazole is a high-value, chiral phosphine-oxazoline (PHOX) ligand, a critical component in asymmetric catalysis. Its precise stereochemistry and electron-deficient trifluoromethyl groups make it exceptionally effective for inducing high enantioselectivity in transition metal-catalyzed reactions. This ligand is indispensable for R&D and production chemists in the pharmaceutical and fine chemical industries seeking to synthesize single-enantiomer intermediates and active pharmaceutical ingredients (APIs).

Application

• Asymmetric Hydrogenation: A premier ligand for the enantioselective reduction of prochiral olefins, enamines, and ketones, crucial for producing chiral amines, alcohols, and amino acid derivatives.
• Asymmetric C-C Bond Formation: Catalyzes key reactions like Heck, Suzuki-Miyaura, and allylic alkylation with high enantiomeric excess (ee) for constructing complex molecular architectures.
• Pharmaceutical Intermediate Synthesis: Enables the efficient, scalable production of chiral building blocks for cardiovascular, central nervous system (CNS), and oncology drug candidates.
• Agrochemical & Flavor/Fragrance Manufacturing: Used to create enantiomerically pure compounds that exhibit superior biological activity or specific sensory properties.
• Academic & Industrial R&D: A vital tool for methodology development in organic synthesis and process chemistry within university and corporate laboratories.
• Catalyst Screening Libraries: Serves as a key component in high-throughput screening kits for identifying optimal catalytic systems for challenging transformations.

Basic Information

Product Name	(4R)-2-[2-[Bis[4-(Trifluoromethyl)Phenyl]Phosphino]-5-(Trifluoromethyl)Phenyl]-4-tert-Butyl-4,5-Dihydrooxazole
CAS No.	1006708-91-3
Molecular Formula	C34H27F9NOP
Molecular Weight	667.55 g/mol
Synonyms	(R)-4-tert-Butyl-2-[2-(bis[4-(trifluoromethyl)phenyl]phosphino)-5-(trifluoromethyl)phenyl]-4,5-dihydrooxazole; (R)-2-[2-[Bis[4-(trifluoromethyl)phenyl]phosphino]-5-(trifluoromethyl)phenyl]-4-(tert-butyl)-4,5-dihydrooxazole; (R)-t-Bu-PHOX(CF3); (R)-3,5-bis(Trifluoromethyl)-t-Bu-PHOX; (R)-PHOX Ligand with CF3 substituents; (R)-4-tert-Butyl-2-[2-(di[4-(trifluoromethyl)phenyl]phosphino)-5-(trifluoromethyl)phenyl]-2-oxazoline; Chiral PHOX Ligand
EINECS	Contact for details

Quality Control

Every batch of our (4R)-PHOX ligand is manufactured under strict quality management protocols to ensure exceptional purity and enantiomeric integrity, critical for reproducible catalytic performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as chiral purity (enantiomeric excess), chemical purity (HPLC), and identity confirmation (NMR). Our production adheres to cGMP principles where applicable, supporting its use in regulated pharmaceutical development.

Storage

Preserve in a tightly closed container, protected from light. For long-term stability, store the product under an inert atmosphere (argon or nitrogen) at 2-8°C. This compound is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Allow the sealed container to reach room temperature before opening to minimize moisture condensation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Enantiomeric Excess (Chiral HPLC)	≥ 99.0% ee
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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