1,2-BIS[(DIMETHYLAMINO)DIMETHYLSILYL]ETHANE

Bezeichnung:1,2-BIS[(DIMETHYLAMINO)DIMETHYLSILYL]ETHANE

CAS-Nr91166-50-6

Englisch Name:1,2-BIS[(DIMETHYLAMINO)DIMETHYLSILYL]ETHANE

CBNumberCB4429063

SummenformelC10H28N2Si2

Molgewicht232.51

MOL-Datei91166-50-6.mol

1,2-BIS[(DIMETHYLAMINO)DIMETHYLSILYL]ETHANE physikalisch-chemischer Eigenschaften

Siedepunkt	101-103 °C13 mm Hg(lit.)
Dichte	0.824 g/mL at 25 °C(lit.)
Brechungsindex	n20/D 1.446(lit.)
Flammpunkt	57 °F
pka	10.31±0.70(Predicted)
Aggregatzustand	clear liquid
Farbe	Colorless to Almost colorless
Wichte	0.824
Hydrolytic Sensitivity	8: reacts rapidly with moisture, water, protic solvents
BRN	4366167
CAS Datenbank	91166-50-6(CAS DataBase Reference)

Sicherheit

Kennzeichnung gefährlicher	F,C
R-Sätze:	11-34
S-Sätze:	16-26-36/37/39-45
RIDADR	UN 2924 3/PG 2
WGK Germany	3
F	10-21
TSCA	No
HazardClass	3.1
PackingGroup	II
HS Code	29319019

Gefahreninformationscode (GHS)

1,2-BIS[(DIMETHYLAMINO)DIMETHYLSILYL]ETHANE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R11:Leichtentzündlich.
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S16:Von Zündquellen fernhalten - Nicht rauchen.
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).
Physikalische Eigenschaften
bp 100–103°C/13 mmHg; d 0.824 g cm?3.
Verwenden
1,4-Bis(dimethylamino)-1,1,4,4-tetramethyldisilethylene is used as a reagent for the protection of primary amines with lower pKa values, such as substituted anilines, as their tetramethyldisilylazacyclopentane or Stabase adduct; precursor of tetramethyldisilylthiacyclopentane, a sulfur transfer reagent.
The title reagent is used for the preparation of Stabase derivatives of primary amines, and is particularly useful for the protection of primary aromatic amines with pKa values of 10–11. The protection of substituted anilines is achieved by heating equimolar amounts of the title compound and the anilines in the presence of zinc iodide (0.5 mol %) under a slow stream of nitrogen at 140°C for 5 h. In many cases the products can be purified by vacuum distillation. Cleavage of the Stabase adducts to the corresponding primary amines can be performed in ether in the presence of 2 equiv of methanol and a small amount of p-toluenesulfonic acid monohydrate (0.2 mol %). The tetramethyldisilylazacyclopentane or Stabase adduct (3) is a particularly attractive protecting group due to its ease of preparation, base stability, and facile removal (eq 1).
synthetische
the reagent is prepared as a colorless liquid in 90% yield by treating commercially available bis(chlorodimethylsilyl) ethane with 5 equiv of dimethylamine in ether at 0°C for 5 h.
Lager
The liquid vapors are heavier than air and may travel a considerable distance to a source of ignition. Vapor-air mixtures are explosive above the flash point of 14 °C. Use in a fume hood.

1,2-BIS[(DIMETHYLAMINO)DIMETHYLSILYL]ETHANE Upstream-Materialien And Downstream Produkte

1,2-BIS[(DIMETHYLAMINO)DIMETHYLSILYL]ETHANE Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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