(1-Bromvinyl)trimethylsilan

Bezeichnung:(1-Bromvinyl)trimethylsilan

CAS-Nr13683-41-5

Englisch Name:(1-BROMOVINYL)TRIMETHYLSILANE

CBNumberCB8359177

SummenformelC5H11BrSi

Molgewicht179.13

MOL-Datei13683-41-5.mol

Synonyma

(1-Bromvinyl)trimethylsilan

(1-Bromvinyl)trimethylsilan physikalisch-chemischer Eigenschaften

Siedepunkt	124 °C745 mm Hg(lit.)
Dichte	1.156 g/mL at 25 °C(lit.)
Dampfdichte	>1 (vs air)
Brechungsindex	n20/D 1.458(lit.)
Flammpunkt	49 °F
storage temp.	2-8°C
Löslichkeit	completely miscible with THF and Et2O.
Aggregatzustand	clear liquid
Farbe	Colorless to Light yellow to Light orange
Wichte	1.163
Hydrolytic Sensitivity	4: no reaction with water under neutral conditions
BRN	1742258
CAS Datenbank	13683-41-5(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher	F
R-Sätze:	11
S-Sätze:	16-23-24/25
RIDADR	UN 1993 3/PG 2
WGK Germany	3
F	8-10-21
TSCA	No
HS Code	2931.90.9010
HazardClass	3.1
PackingGroup	II

Gefahreninformationscode (GHS)

(1-BROMOVINYL)TRIMETHYLSILANE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
CLEAR LIGHT YELLOW LIQUID
Physikalische Eigenschaften
bp 124°C/745 mmHg; d 1.156 g cm?3.
Verwenden
Numerous nucleophiles react with (1-bromovinyl)trimethylsilane in the presence of palladium complexes. The bromine has been substituted by phenylthio,vinyl,and aryl groups. This approach gives reasonable yields of the desired products. However, the substitution reactions sometimes lack regiospecificity. For example, a mixture of regioisomers was obtained in eq 6. Two mechanisms have been proposed for the formation of the β-substituted product. One involves an elimination step to give trimethylsilylacetylene as an intermediate, which then undergoes catalyzed additions with the nucleophile at either the α- or β-positions.The other mechanism involves the formation of a pentacoordinated palladium intermediate, leading to the formation of isomeric products.
synthetische
prepared, in good yield, from the reaction of vinyltrimethylsilane with bromine at low temperature followed by dehydrohalogenation in the presence of an amine base.Alternative syntheses and reagents, i.e. (1-bromovinyl)- triphenylsilane and (1-bromovinyl)triethylsilane, are also known.
Allgemeine Beschreibung
Tetrakis(triphenylphosphine)palladium(0) catalyzed coupling reactions of (1-bromovinyl)trimethylsilane with organozinc bromides were studied.

(1-Bromvinyl)trimethylsilan Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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