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903132

Sigma-Aldrich

1-(Fluorosulfonyl)-2,3-dimethyl-1H-imidazol-3-ium trifluoromethanesulfonate

≥95%

Synonym(s):

1-(Fluorosulfuryl)-2,3-dimethyl-1H-imidazol-3-ium trifluoromethanesulfonate, Fluorosulfuryl imidazolium triflate salt, SuFEx-IT

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1 G
€132.00
5 G
€455.00
25 G
€1,560.00

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1 G
€132.00
5 G
€455.00
25 G
€1,560.00

About This Item

Empirical Formula (Hill Notation):
C6H8F4N2O5S2
CAS Number:
2179072-33-2
Molecular Weight:
328.26
MDL number:
MFCD31693095
UNSPSC Code:
12352101
NACRES:
NA.22

€132.00

Please contact Customer Service for Availability
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Assay

≥95%

form

solid

mp

64-65 °C

functional group

fluoro
triflate

storage temp.

2-8°C

SMILES string

F[S](=O)(=O)[n+]1c([n](cc1)C)C.FC(F)(F)[S](=O)(=O)[O-]

InChI

1S/C5H8FN2O2S.CHF3O3S/c1-5-7(2)3-4-8(5)11(6,9)10;2-1(3,4)8(5,6)7/h3-4H,1-2H3;(H,5,6,7)/q+1;/p-1

InChI key

YAZBWGHMIMMBFC-UHFFFAOYSA-M

Application

This solid fluorosulfuryl imidazolium triflate salt, SuFEx-IT, is a convenient alternative to sulfuryl fluoride (SO2F2), which is a harmful fumigant gas with difficult handling procedures that make SO2F2 -- and the products it is capable of making -- difficult to access. However, this reagent possesses novel reactivity, selectivity, and scope and was demonstrated by the labs of K. Barry Sharpless and Jiajia Dong to convert phenols, primary amines, and secondary amines to fluorosulfates and sulfamoyl fluorides. Fluorosulfates are used widely in biological studies, medicinal chemistry, and work as a pseudohalide in Pd-catalysed cross-coupling reactions.
Store in dry environment (desiccator advised) at 4 °C.

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Other Notes

A New Portal to SuFEx Click Chemistry: A Stable Fluorosulfuryl Imidazolium Salt Emerging as an “F-SO2+” Donor of Unprecedented Reactivity, Selectivity, and Scope

related product

Product No.
Description
Pricing

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF0345V
WXBD9062V
WXBD5729V
WXBD4694V
MKCN1707

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Taijie Guo et al.
Angewandte Chemie (International ed. in English), 57(10), 2605-2610 (2017-12-26)
Sulfuryl fluoride, SO2 F2 , has been found to derivatize phenols in all kinds of environments, even those in highly functional molecules. We now report that a solid fluorosulfuryl imidazolium triflate salt delivers the same "F-SO2 +" fragment to Nu-H

Related Content

Dong Group – Prof. Product Portal

Dong Lab explores main-group fluorides for organic transformations and catalyst developments, advancing organic synthesis methodologies.

Questions

1–2 of 2 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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