68478-92-2

Basic information

• Product Name: Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane
• Synonyms: Platinum,1,3-diethenyl-1,1,3,3-tetramethyldisiloxanecomplexes;platinumvinylsiloxane;Platinum (0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex, soln. in vinyl terminated polydimeth;Karstedt Catalyst Solution;Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex solution [in dimethylsiloxane];Platinum-divinyltetramethyldisiloxane complex inxylene;PlatinuM(0)-1,3-divinyl-1,1,3,3-tetraMethyldisilox;PlatinuM (0)-1,3-divinyl-1,1,3,3-tetraMethyldisiloxane coMplex, soln. in Isopropanol
• CAS NO: 68478-92-2
• Molecular Formula: C₈H₁₈OSi₂*Pt
• Molecular Weight: 381.48
• EINECS: 270-844-4
• Product Categories: Platinum;UVCBs-organometallic;Catalysis and Inorganic Chemistry;Chemical Synthesis
• Mol File: 68478-92-2.mol
• Article Data: 5

Chemical Properties

• Melting Point: 12-13 °C
• Boiling Point: 138 °C
• Flash Point: 86 °F
• Appearance: yellow liquid
• Density: 0.984 g/mL at 25 °C
• Vapor Pressure: 7 mm Hg ( 21 °C)
• Refractive Index: 1.4954
• Storage Temp.: under inert gas (nitrogen or Argon) at 2-8°C
• Water Solubility: Miscible with toluene, xylene, isopropyl alcohol, double-vinyl silicone oil and vinyl terminated poly(dimethylsiloxane). Immisci
• Sensitive: Moisture Sensitive
• Stability: Flammable. Incompatible with reducing agents, oxidizing agents. Contact with water yields hydrogen gas.
• CAS DataBase Reference: Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane(CAS DataBase Reference)
• NIST Chemistry Reference: Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane(68478-92-2)
• EPA Substance Registry System: Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane(68478-92-2)

Safety Data

• Hazard Codes: T,Xi,Xn
• Statements: 61-10-20/21-37/38-41-62-36/37/38-38
• Safety Statements: 53-16-26-36/37/39-45-36-36/37
• RIDADR: UN 1307 3/PG 3
• WGK Germany: 3
• TSCA: Yes
• Hazardous Substances Data: 68478-92-2(Hazardous Substances Data)

Usage

Chemical Properties

pale yellow solution

Uses

Different sources of media describe the Uses of 68478-92-2 differently. You can refer to the following data:
1. Platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane Complex Solution is a catalyst in the preparation of phenol functional silanes which are used as adhesion promoters.
2. Hydrosilylation Catalysts

General Description

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.

InChI:InChI=1/C8H18OSi2.Pt/c1-7-10(3,4)9-11(5,6)8-2;/h7-8H,1-2H2,3-6H3;

Upstream product

• 2627-95-4 tetramethyldivinyldisiloxane 
• 67-63-0 isopropyl alcohol 

Downstream Products

• 78560-47-1 trichloro(1H,1H,2H,2H-nonafluorohexyl)silane 
• 60648-70-6 bis(tri-tert-butylphosphine)platinum⁽⁰⁾ 
• 68323-30-8 (2-bicyclo[2.2.1]hept-5-en-2-yl-ethyl)-trimethoxy-silane 

Relevant articles and documents

C-H borylation by platinum catalysis

Herein, we describe the platinum-catalyzed borylation of aromatic C-H bonds. N-Heterocyclic carbene-ligated platinum catalysts are found to be efficient catalysts for the borylation of aromatic C(sp2)-H bonds when bis(pinacolato)diboron is used as the boron source. The most remarkable feature of these Pt catalysts is their lack of sensitivity towards the degree of steric hindrance around the C-H bonds undergoing the borylation reaction. These Pt catalysts allow for the synthesis of sterically congested 2,6-disubstituted phenylboronic esters, which are otherwise difficult to synthesize using existing C-H borylation methods. Furthermore, platinum catalysis allows for the site-selective borylation of the C-H bonds ortho to fluorine substituents in fluoroarene systems. Preliminary mechanistic studies and work towards the synthetic application of this platinum catalyzed C-H borylation process are described.

C-H Functionalization at Sterically Congested Positions by the Platinum-Catalyzed Borylation of Arenes

Despite significant progress in the area of C-H bond functionalization of arenes, no general method has been reported for the functionalization of C-H bonds at the sterically encumbered positions of simple arenes, such as mesitylene. Herein, we report the development of the first platinum-based catalyst for C-H borylation of arenes and heteroarenes. Notably, this method exhibited high tolerance toward steric hindrance and provided rapid access to a series of 2,6-disubstituted phenylboronic esters, valuable building blocks for further elaborations.

Copper-catalyzed Hiyama cross-coupling using vinylsilanes and benzylic electrophiles

Allylbenzene derivatives are ubiquitous frameworks in organic chemistry. Herein is described an efficient copper-catalyzed cross-coupling reaction using vinylsilanes and benzyl bromides, leading to the synthesis of allylbenzenes. This methodology allows the use of cis, trans and 1,1′-disubstituted vinylsilanes as well as a large number of sensitive moieties. the Partner Organisations 2014.