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125542-03-2
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Basic Information
CAS No.: 125542-03-2
Name: CHLORODIMETHYL(2,3,4,5-TETRAMETHYL-2,4-CYCLOPENTADIEN-1-YL)SILANE
Article Data: 18
Molecular Structure:
Molecular Structure of 125542-03-2 (CHLORODIMETHYL(2,3,4,5-TETRAMETHYL-2,4-CYCLOPENTADIEN-1-YL)SILANE)
Formula: C11H19 Cl Si
Molecular Weight: 214.81
Synonyms: Silane,chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)- (9CI);5-(Chlorodimethylsilyl)-1,2,3,4-tetramethyl-1,3-cyclopentadiene;Chlorodimethyl(2,3,4,5-tetramethyl-2,4-cyclopentadien-1-yl)silane;Dimethylsilyl(2,3,4,5-tetramethylcyclopentadienyl) chloride
Density: 0.972 g/mL at 25 °C(lit.)
Boiling Point: 50 °C0.05 mm Hg(lit.)
Flash Point: 133 °F
Hazard Symbols:
Risk Codes: 14-34
Safety:
Hazard Codes C
Risk Statements 14-34
Safety Statements 26-27-36/37/39-45
RIDADR UN 2986 8/PG 2
WGK Germany 3
PSA: 0.00000
LogP: 4.48690
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Synthetic route
386708-10-7, 82061-21-0

lithium 1,2,3,4-tetramethylcyclopentadienide

75-78-5

dimethylsilicon dichloride

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

Conditions
ConditionsYield
In tetrahydrofuran at -30 - 20℃; Inert atmosphere;88%
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

75-78-5

dimethylsilicon dichloride

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

Conditions
ConditionsYield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In diethyl ether; hexane
Stage #2: dimethylsilicon dichloride In tetrahydrofuran		83%
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In tetrahydrofuran at -78 - 20℃; Schlenk technique;
Stage #2: dimethylsilicon dichloride In tetrahydrofuran; hexane at 20℃; Schlenk technique;		83%
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In tetrahydrofuran at -78 - 20℃; Schlenk technique;
Stage #2: dimethylsilicon dichloride In tetrahydrofuran; hexane at -78 - 20℃; Schlenk technique;		83%
75-78-5

dimethylsilicon dichloride

2,3,4,5-tetramethylcyclopentadienyl sodium

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

Conditions
ConditionsYield
In tetrahydrofuran for 16h;
54458-61-6

2,3,4,5-tetramethyl-2-cyclopenten-1-one

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: lithium aluminium hydride / diethyl ether / 2 h
1.2: 37 percent / hydrochloric acid; air / diethyl ether; H2O / 16 h
2.1: n-butyllithium / petroleum ether / 16 h / 0 - 20 °C
2.2: 67 percent / petroleum ether; tetrahydrofuran / 16 h
View Scheme

C11H15(1-)*Li(1+)

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

C22H34Si

Conditions
ConditionsYield
In tetrahydrofuran at -25 - 20℃; Inert atmosphere; Glovebox;98.9%

Li(1+)*C5H4C(CH3)2CH2CH2CHCH2(1-)=LiC5H4C(CH3)2CH2CH2CHCH2

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

C23H36Si

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 6h;98%

1,3-diisopropyl-4,5-dimethyl-1H-imidazol-2(3H)-imine

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

1034125-20-6

C5(CH3)4HSi(CH3)2NCN2(CH(CH3)2)2C2(CH3)2

Conditions
ConditionsYield
In hexane at 20℃; for 1.5h;98%
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1-n-butyl-3H-indene

125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

C24H34Si

Conditions
ConditionsYield
Stage #1: 1-n-butyl-3H-indene With n-butyllithium In tetrahydrofuran at -78 - 20℃; for 2.5h; Schlenk technique;
Stage #2: 1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene In tetrahydrofuran at -78 - 20℃; Schlenk technique;		98%
96-50-4

2-thiazolylamine

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1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

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(C5Me4H)SiMe2NH-2-thiazole

Conditions
ConditionsYield
With triethylamine In tetrahydrofuran at 20℃; for 3h;97%
125542-03-2

1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

K(1+)*C5H4CH2CH2P(C6H5)2(1-)=K[C5H4CH2CH2P(C6H5)2]

(2-{4-[dimethyl-(2,3,4,5-tetramethyl-cyclopenta-2,4-dienyl)-silanyl]-cyclopenta-1,3-dienyl}-ethyl)-diphenyl-phosphane

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 18h;96%
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