1-Fluoropyridinium tetrafluoroborate

Bezeichnung:1-Fluoropyridinium tetrafluoroborate

CAS-Nr107264-09-5

Englisch Name:1-Fluoropyridinium tetrafluoroborate

CBNumberCB4696117

SummenformelC5H5BF5N

Molgewicht184.9

MOL-Datei107264-09-5.mol

1-Fluoropyridinium tetrafluoroborate physikalisch-chemischer Eigenschaften

Schmelzpunkt	186-192 °C (lit.)
Aggregatzustand	Powder
Farbe	Off-white
Sensitive	Moisture Sensitive
BRN	4281226
CAS Datenbank	107264-09-5(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher	C
R-Sätze:	34
S-Sätze:	26-36/37/39-45
RIDADR	UN 3261 8/PG 2
WGK Germany	3
F	9-21
Hazard Note	Moisture sensitive/Corrosive
HazardClass	8
PackingGroup	III
HS Code	29333990

Gefahreninformationscode (GHS)

1-Fluoropyridinium tetrafluoroborate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Chemische Eigenschaften
off-white powder
Verwenden
1-Fluoropyridine tetrafluoroborate is a pyridine organic compound, which can be used as an intermediate in pharmaceutical synthesis.
Allgemeine Beschreibung
1-Fluoropyridinium tetrafluoroborate (N-Fluoropyridinium tetrafluoroborate), an N-fluorinated compound, is an electrophilic fluorinating reagent (containing N and F double bond). Controlled potential electrolysis of 1-fluoropyridinium tetrafluoroborate has been reported to afford pyridine, 2-fluoropyridine and 2-acetamidopyridine.
Research
The products from the controlled potential electrolysis of 1-fluoropyridinium tetrafluoroborate were determined to be pyridine, 2-fluoropyridine, and 2-acetamidopyridine in yields. Loss of fluoride ion from the neutral radical in equilibrium with the dimer is believed to be the initial step in a multi-step mechanism, which results in the products observed from the controlled potential coulometry of 1-fluoropyridinium tetrafluoroborate. Catalytic fluorination/chlorination competition experiments of β-keto ester 5 were used to assess the relative fluorinating activity of various electrophilic NF reagents (containing an NF bond). SelectfluorTM ( F-TEDA; TEDA=triethylenediamine) reacts more than 100 times faster than 1-fluoropyridinium tetrafluoroborate[1-2].
Einzelnachweise
[1] Edward W Oliver, Dennis H Evans. “Electrochemical studies of six NF electrophilic fluorinating reagents.” Journal of Electroanalytical Chemistry 474 1 (1999): Pages 1-8.
[2] P. Toullec. “Relative Electrophilic Fluorinating Power as Assayed by Competitive Catalytic Halogenation Reactions.” ChemInform 56 1 (2005).

1-Fluoropyridinium tetrafluoroborate Upstream-Materialien And Downstream Produkte

1-Fluoropyridinium tetrafluoroborate Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

107264-09-5, 1-Fluoropyridinium tetrafluoroborate Verwandte Suche:

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