405329

Ytterbium(III) trifluoromethanesulfonate hydrate

Yb 25-28 % (approx.)

• Synonym(s): Yb(OTf)₃, Trifluoromethanesulfonic acid ytterbium salt, Ytterbium(III) triflate
• Linear Formula: (CF₃SO₃)₃Yb · xH₂O
• CAS Number: 252976-51-5
• Molecular Weight: 620.25 (anhydrous basis)
• MDL number: MFCD03703499
• UNSPSC Code: 12161600
• PubChem Substance ID: 24865309
• NACRES: NA.22

Properties

• composition: Degree of hydration, 1-2 ; Yb, 25-28% (approx.)
• reaction suitability: core: ytterbium; reagent type: catalyst
• SMILES string: [H]O[H].FC(F)(F)S(=O)(=O)O[Yb](OS(=O)(=O)C(F)(F)F)OS(=O)(=O)C(F)(F)F
• InChI: 1S/3CHF3O3S.H2O.Yb/c3*2-1(3,4)8(5,6)7;;/h3*(H,5,6,7);1H2;/q;;;;+3/p-3
• InChI key: BUJKNFNMGRYZBV-UHFFFAOYSA-K

Description

General description

Layer-by-layer assembly of 4-aminothiophenol and ytterbium(III)trifluoromethanesulfonate hydrate film has been investigated by atomic force microscopy (AFM). Bis(oxazolinyl)-pyridine-scandium(III) triflate complexes have been reported to catalyze the enantioselective Friedel-Crafts addition of various indoles.

Application

Ytterbium(III) trifluoromethanesulfonate hydrate (Yb(OTf)₃) was employed as Lewis acid catalyst for the following studies:

• Synthesis of the dihydropyrimidine (DHPM) derivative monastrol, by Biginelli cyclocondensation.
• Cross-aldol reaction between ketone and aldehyde.
• Synthesis of β-keto enol ethers.
• Synthesis of deoxypenostatin A in a novel, stereoselective intramolecular Diels-Alder reaction.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H319,H335
• pcodes: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• target_organs: Respiratory system
• Storage Class: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: dust mask type N95 (US), Eyeshields, Gloves