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433-06-7 - 2,2,2-Trifluoroethyl p-toluenesulfonate, 98+% - p-Toluenesulfonic acid 2,2,2-trifluoroethyl ester - A17871 - Alfa Aesar

A17871 2,2,2-Trifluoroethyl p-toluenesulfonate, 98+%

CAS-Nummer
433-06-7
Synonyme
p-Toluenesulfonic acid 2,2,2-trifluoroethyl ester

Größe Preis ($) Menge Verfügbarkeit
25g 31,70
100g 109,00
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2,2,2-Trifluoroethyl p-toluenesulfonate, 98+%

MDL
MFCD00000443
EINECS
207-085-5

Chemische Eigenschaften

Formel
C9H9F3O3S
Molmasse
254.23
Schmelzpunkt
37-42°
Siedepunkt
87-92°/0.1mm
Flammpunkt
>110°(230°F)
Sensitivität
Moisture Sensitive

Literaturverweise

Alkylating agent for introduction of the trifluoroethyl group.

/n

Metallation by LDA leads to 2,2-difluoro-1-tosyloxyvinyllithium, which adds quantitatively to carbonyl groups. Acid hydrolysis leads to ɑ-tosyloxy acrylates, which can be hydrolyzed to ɑ-keto acids by base: Tetrahedron Lett., 4809 (1978):

/n

n-BuLi at -78o has also been used by Ichikawa's group to generate the vinyllithium intermediate, which undergoes boron or copper mediated reactions yielding 2,2-difluorovinyl ketones and other products. See, e.g.: Tetrahedron Lett., 33, 337 (1992); Tetrahedron, 50, 11637 (1994); J. Org. Chem., 60, 2320 (1995).

/n

GHS Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Sicherheitshinweise: P261-P280a-P305+P351+P338-P304+P340-P405-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

Beilstein
2699394
Harmonized Tariff Code
2904.99
TSCA
Yes

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