225649
Trimethylsilyl trifluoromethanesulfonate
99%
Synonym(s):
TMS triflate, TMSOTf, Trifluoromethanesulfonic acid trimethylsilylester
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About This Item
Linear Formula:
CF3SO3Si(CH3)3
CAS Number:
Molecular Weight:
222.26
UNSPSC Code:
12352103
NACRES:
NA.22
PubChem Substance ID:
EC Number:
248-565-4
Beilstein/REAXYS Number:
1868911
MDL number:
Assay:
99%
Form:
liquid
Quality Level
assay
99%
form
liquid
refractive index
n20/D 1.36 (lit.)
bp
77 °C/80 mmHg (lit.)
density
1.228 g/mL at 25 °C (lit.)
functional group
fluoro, triflate
SMILES string
C[Si](C)(C)OS(=O)(=O)C(F)(F)F
InChI
1S/C4H9F3O3SSi/c1-12(2,3)10-11(8,9)4(5,6)7/h1-3H3
InChI key
FTVLMFQEYACZNP-UHFFFAOYSA-N
Application
Trimethylsilyl trifluoromethanesulfonate has been used in combination with boron trifluoride etherate for the copper-catalyzed asymmetric allylic alkylation (AAA) of allyl bromides, chlorides, and ethers with organolithium reagents in the presence of a chiral ligand.
It can be used:
It may also be used to catalyze:
It can be used:
- As a silylating agent for the synthesis of trimethylsilyl-enol ethers from esters of α-diazoacetoacetic acid.
- To activate benzyl and allyl ethers for the alkylation of sulfides.
- To facilitate the conversion of Diels-Alder adducts of Danishefsky′s diene to cyclohexenones without the formation of methoxy ketone by-product.
- To prepare difluoroboron triflate etherate, a powerful Lewis acid especially in acetonitrile solvent.
- As a reagent in a Dieckmann-like cyclization of ester-imides and diesters.
It may also be used to catalyze:
- Acylation of alcohols with acid anhydrides.
- Reductive coupling of carbonyl compounds with trialkylsilanes to form symmetrical ethers.
- Glycosidation of 4-demethoxydaunomycinones with 1-O-acyl-L-daunosamine derivatives.
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signalword
Danger
hcodes
Hazard Classifications
Flam. Liq. 3 - Skin Corr. 1B
supp_hazards
Storage Class
3 - Flammable liquids
wgk
WGK 3
flash_point_f
77.0 °F - closed cup
flash_point_c
25 °C - closed cup
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
Regulatory Information
危险化学品
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Novel glycosidation of 4-demethoxyanthracyclinones by the use of trimethylsilyl triflate. Syntheses of optically active 4-demethoxydaunorubicin and 4-demethoxyadriamycin.
Kimura Y, et al.
Bulletin of the Chemical Society of Japan, 59(2), 423-431 (1986)
Efficient, trimethylsilyl triflate-mediated conversion of Diels-Alder adducts of 1-methoxy-3-[(trimethylsilyl) oxy]-1, 3-butadiene (Danishefsky's diene) to cyclohexenones.
Vorndam PE
The Journal of Organic Chemistry, 55(11), 3693-3695 (1990)
Method for sulfide S-benzylation or S-allylation using trimethylsilyl triflate activated benzyl or allyl ethers.
Vedejs E & Eustache J.
The Journal of Organic Chemistry, 46(16), 3353-3354 (1981)
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 225649-250G | 04061838779618 |
| 225649-50G | 04061838779625 |
| 225649-10G | 04061838779601 |