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479519

Sigma-Aldrich

Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution

in xylene, Pt ~2 %

Sinonimo/i:

Karstedt′s catalyst, Platinum(0) 1,3-diethenyl-1,1,3,3-tetramethyldisiloxane complexes

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About This Item

Formula condensata:
O[Si(CH3)2CH=CH2]2Pt
Numero CAS:
68478-92-2
Peso molecolare:
381.48
Numero MDL:
MFCD00151662
Codice UNSPSC:
12161600
ID PubChem:
24871623
NACRES:
NA.22

Tensione di vapore

7 mmHg ( 21 °C)

Composizione

Pt, ~2%

Impiego in reazioni chimiche

core: platinum
reagent type: catalyst

Concentrazione

in xylene

P. eboll.

138 °C

Punto di fusione

12-13 °C

Densità

0.855 g/mL at 25 °C

Stringa SMILE

[Pt].C[Si](C)(O[Si](C)(C)C=C)C=C

InChI

1S/C8H18OSi2.Pt/c1-7-10(3,4)9-11(5,6)8-2;/h7-8H,1-2H2,3-6H3;
RCNRJBWHLARWRP-UHFFFAOYSA-N

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Descrizione generale

Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex is a platinum complex, commonly known as a Karstedt′s catalyst. It is generally employed as a catalyst in hydrosilylation reactions.

Applicazioni

Hydrosilylation Catalysts
Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution is a powerful hydrosilylation catalyst for the preparation of trans-β-silanes.

It has also been used in the reduction of carboxamides to amines.

Avvertenze

Danger

Classi di pericolo

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT RE 2 Inhalation - STOT SE 3

Organi bersaglio

Central nervous system,Liver,Kidney, Respiratory system

Codice della classe di stoccaggio

3 - Flammable liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

77.0 °F - closed cup

Punto d’infiammabilità (°C)

25 °C - closed cup

Certificati d'analisi (COA)

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S E Denmark et al.
Organic letters, 3(7), 1073-1076 (2001-03-30)
[reaction: see text]. The formal addition of an aryl-H or alkenyl-H bond across a terminal alkyne has been accomplished by the combination of platinum-catalyzed hydrosilylation followed by palladium-catalyzed cross-coupling. The use of the t-Bu3P-Pt(DVDS) catalyst in combination with tetramethyldisiloxane gave
Kenichiro Itami et al.
The Journal of organic chemistry, 67(8), 2645-2652 (2002-04-13)
Metal-catalyzed hydrosilylation of alkenes and alkynes using dimethyl(pyridyl)silane is described. The hydrosilylation of alkenes using dimethyl(2-pyridyl)silane (2-PyMe(2)SiH) proceeded well in the presence of a catalytic amount of RhCl(PPh(3))(3) with virtually complete regioselectivity. By taking advantage of the phase tag property
Denmark, S. E.; Wang, Z.
Organic Syntheses, 81, 54-54 (2005)

Articoli

Alkyne Hydrosilylation

Vinyl-metal reagents play a pivotal role in organic synthesis. Among the vinyl-metal reagents available, silicon-based reagents are of increasing importance. This is largely due to their low cost, minimal toxicity, ease of handling, and the simplicity of byproduct removal.

Hydrosilylation Catalyst

A Highly Efficient Hydrosilylation Catalyst, sigma-aldrich is pleased to offer [Cp*Ru(MeCN)3]PF6, as well as a number of other catalysts for hydrosilylation.

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