Trimethoxysilane → Vinyltrimethoxysilane

HRID 1380159

Reaktionsgleichung

Reaktionsgleichung von HRID 1380159
[CH3:1][O:2][SiH](OC)OC.C(C1C(C(C)C)=C(C(C)C)C=CC=1)(C)C.[CH3:23][O:24][Si:25]([O:37][CH3:38])([O:35][CH3:36])[CH2:26][CH2:27][Si:28]([O:33][CH3:34])([O:31][CH3:32])[O:29][CH3:30]>>[CH:26]([Si:25]([O:37][CH3:38])([O:35][CH3:36])[O:24][CH3:23])=[CH2:27].[CH3:1][O:2][Si:28]([O:29][CH3:30])([O:31][CH3:32])[O:33][CH3:34]

Komponenten

5

Edukt 3

HCID 17215TrimethoxysilaneHCID 87627HexamethoxydisilylethaneHCID 13880201Triisopropylbenzene

Produkt 2

HCID 12682TetramethoxysilaneAusbeute 2 %HCID 76004VinyltrimethoxysilaneAusbeute 22 %

Reaktionsbedingungen

Temperatur
120 °C

Versuchsvorschrift

A 50 ml Schlenk tube with a side arm was equipped with a Claisen adapter and stirring bar. A septum was wired to the Claisen adapter and a water condenser was also attached. Into the flask was placed 5 g (0.041 mol.) trimethoxysilane and 1 g triisopropylbenzene. To this solution was also added 30 ppm of H2PtCl6 (10 ml; 15 mg Pt/ml). The reaction mix was heated to only 120° C. in an oil bath and acetylene was bubbled into the reaction mix with a stainless steel needle at a rate of 50 cc/min with a back pressure maintained of 4-5 psig. After one hour the reaction was complete as monitored by GPC. The major product formed was 1,2-bis(trimethoxysilyl)ethane (76%). Vinyltrimethoxysilane (22%) and tetramethoxysilane (2%) were also produced.

Aufarbeitung

  1. customA 50 ml Schlenk tube with a side arm was equipped with a Claisen adapter
  2. additionThe reaction mix
  3. customacetylene was bubbled into the reaction
  4. additionmix with a stainless steel needle at a rate of 50 cc/min with a back pressure
  5. temperaturemaintained of 4-5 psig
  6. customThe major product formed

Quellen und Nachweise

ORD-Eintrag
ord-1a7902bcd92b4690bf2a3a8f96aeee4c
Quelldatensatz
uspto-grants-1986_04
Patentnummer
US04579965

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