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ChemicalBook CAS DataBase List DIMETHYLBIS(INDENYL)SILANE

DIMETHYLBIS(INDENYL)SILANE synthesis

5synthesis methods
-

Yield: 94%

Reaction Conditions:

with magnesium in tetrahydrofuran;ethylene dibromideCooling with ice;

Steps:

1 Production Example 1
Synthesis of a Li salt of 2,2'-diindenyldimethylsilane
Production Example 1
Synthesis of a Li salt of 2,2'-diindenyldimethylsilane
In a 200 ml-two-neck flask, THF (10 ml) and Mg (2.5g, 1.0 mmol) were incorporated.
Further, 1,2-dibromoethane (0.1 ml) was added.
The resultant was stirred at room temperature for 10 minutes, whereby the Mg surface was activated.
To this, 2-bromoindene (5.0g, 26 mmol) which had been dissolved in THF (40 ml) was added dropwise by means of a pressure equalizing funnel.
The resulting reaction mixture was cooled on ice bath, and then, dichlorodimethylsilane (29.7 ml, 246 mmol) was added dropwise.
After stirring the reaction mixture for overnight, the solvent was distilled off.
Extraction was conducted from the resulting solid by using hexane (50 ml * 2).
By subjecting the resulting extraction solution to evaporation dryness, 2,2'-diindenyldimethylsilane was obtained as a pale yellow oily product (3.47g, 12.0 mmol, 94%).

References:

Idemitsu Kosan Co., Ltd.;YABUGAMI, Minoru;OKAMOTO, Takuji EP2650300, 2013, A1 Location in patent:Paragraph 0045; 0046