(S)-C3-TunePhos
(S)-C3-TunePhos, CAS 486429-99-6, is a sophisticated chiral phosphine ligand with the molecular formula C39H32O2P2 and a molecular weight of 594.62 g/mol. It is widely recognised for its efficacy in asymmetric synthesis, particularly in ruthenium-catalyzed asymmetric hydrogenations. This ligand offers comparable or superior enantioselectivities to BINAP in key synthetic transformations, making it an invaluable tool for the precise construction of chiral molecules.
- IUPAC
- (S)-Bis(diphenylphosphino)-7,8-dihydro-6H-dibenzo[f,h][1,5]dioxonin

Asymmetric Hydrogenation of β-Keto Esters
(S)-C3-TunePhos, when used as a ligand in ruthenium catalysts, provides high enantioselectivity in the asymmetric hydrogenation of β-keto esters, a crucial step in synthesising chiral intermediates.
Hydrogenation of Cyclic β-(Acylamino)acrylates
This ligand demonstrates significant utility in the Ru-catalyzed asymmetric hydrogenation of cyclic β-(acylamino)acrylates, leading to enantiomerically enriched products essential for pharmaceutical synthesis.
Asymmetric Hydrogenation of α-Phthalimide Ketones
It enables efficient asymmetric hydrogenation of α-phthalimide ketones, contributing to the development of stereoselective synthetic routes for complex chiral molecules.
| Molecular weight | 594.62 |
|---|---|
| Empirical formula | C39H32O2P2 |
| Application | Provides comparable or superior enantioselectivities and catalytic abilities to BINAP in Ru-catalyzed asymmetric hydrogenations of β-keto esters5, cyclic β-(acylamino)acrylates6 and a-phthalimide ketones7. |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
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 (S)-C3-TunePhos used for?
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(S)-C3-TunePhos is primarily used as a chiral ligand in ruthenium-catalyzed asymmetric hydrogenation reactions, offering high enantioselectivity and catalytic efficiency for substrates such as β-keto esters, cyclic β-(acylamino)acrylates, and α-phthalimide ketones.
What is the CAS number and molecular formula for (S)-C3-TunePhos?
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The CAS number for (S)-C3-TunePhos is 486429-99-6, and its molecular formula is C39H32O2P2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (S)-C3-TunePhos as a research-grade chemical. We do not represent it as USP, BP, EP, or any other pharmacopoeia grade.
How should (S)-C3-TunePhos be handled safely?
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Handle (S)-C3-TunePhos with appropriate personal protective equipment, including eyeshields and gloves. A type N95 (US) or type P1 (EN143) respirator filter is recommended. It is classified under WGK Germany 3, indicating a hazard to water.
How is (S)-C3-TunePhos packed and shipped?
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Tech Serve Solutions carefully packs and ships fine chemicals globally, adhering to all necessary regulations for international transport.
How can I request a sample or quote for (S)-C3-TunePhos?
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To request a sample or quote for (S)-C3-TunePhos, please contact our sales team through the website or by phone, providing your specific requirements.
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