(11bS,11′bS)-4,4′-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin
(11bS,11′bS)-4,4′-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin (CAS 349114-57-4), with the molecular formula C55H36O5P2 and a molecular weight of 838.82 g/mol, is a specialised diphosphonite ligand. It is prominently utilised in asymmetric synthesis, particularly for the Noyori-type asymmetric transfer hydrogenation of prochiral ketones. This chiral catalyst plays a crucial role in the stereoselective synthesis of valuable organic compounds.
- IUPAC
- S,S-Reetz X-Diphosphonite
- Synonyms
- S,S-Reetz X-Diphosphonite, 9-Dimethyl-9H-xanthene-4,5-diyl)bis-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin
![(11bS,11′bS)-4,4′-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin (C55H36O5P2) — chemical structure, CAS 349114-57-4; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F349114-57-4.png&w=3840&q=75)
Asymmetric Transfer Hydrogenation
This diphosphonite ligand is an effective chiral catalyst for Noyori-type asymmetric transfer hydrogenation reactions. It enables the stereoselective reduction of prochiral ketones to chiral alcohols.
Chiral Ligand in Organic Synthesis
As a privileged ligand, it facilitates enantioselective transformations, contributing to the synthesis of complex chiral molecules and pharmaceutical intermediates where precise stereochemistry is essential.
Catalysis Research
Utilised in academic and industrial research settings to explore new catalytic methodologies and develop efficient routes for the production of enantiomerically enriched compounds.
| Molecular weight | 838.82 |
|---|---|
| Empirical formula | C55H36O5P2 |
| Optical activity | [α]22/D -245°, c = 1 in chloroform |
| Application | This diphosphonite ligand has been successfully employed in Noyori-type asymmetric transfer hydrogenation of prochiral ketones.3 |
| Melting point | 195-207 °C (dec.) |
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.
What is (11bS,11′bS)-4,4′-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis-dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin used for?
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This compound is primarily used as a chiral ligand in asymmetric transfer hydrogenation of prochiral ketones, playing a key role in stereoselective synthesis.
What are the CAS number and formula for this chemical?
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The CAS number is 349114-57-4, and the empirical formula is C55H36O5P2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical as a research-grade material. We do not represent it as USP, BP, EP, or other pharmacopoeial grades.
What are the safety and handling considerations for this compound?
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According to safety data, this compound is classified under WGK 2 (Germany). Handle with appropriate personal protective equipment in a well-ventilated area. Specific handling guidelines should be consulted from the Safety Data Sheet (SDS).
How is this product packed, shipped, and exported?
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Tech Serve Solutions carefully packs and ships this chemical globally, adhering to all relevant international regulations for the export of fine chemicals.
How can I request a sample or quote for this product?
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To request a sample or obtain a quotation, please contact our sales team through the website or directly via email or phone, referencing CAS number 349114-57-4.
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