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Basic Information
CAS No.: 77-63-4
Name: 2,4,6,8-tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane
Molecular Structure:
Molecular Structure of 77-63-4 (2,4,6,8-tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane)
Formula: C28H32O4Si4
Molecular Weight: 544.902
Synonyms: 2,4,6,8-tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-;2,4,6,8-Tetramethyl-2,4,6,8-tetraphenyl-1,3,5,7-tetraoxa-2,4,6,8-tetrasilacyclooctane;2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclooctanetetrasiloxane;2,4,6,8-Tetraphenyl-2,4,6,8-tetramethylcyclooctanetetrasiloxane;Tetrtaphenyltetramethylcyclotetrasiloxane;1,3,5,7-Tetramethyltetraphenylcyclotetrasiloxane
EINECS: 201-045-0
Density: 1.13
Melting Point: 99°C
Boiling Point: 493.2°C at 760 mmHg
Flash Point: 211.7°C
PSA: 36.92000
LogP: 3.98320
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Synthetic route
149-74-6

dichloromethylphenylsilane

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B

77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

Conditions
ConditionsYield
With pyridine; sodium hydrogencarbonate In acetone at 20℃; for 3h;A 33%
B 65.5%
With tetrahydrofuran; lithium at 35 - 45℃; Product distribution; Mechanism;
With tetrahydrofuran; lithium at 35 - 45℃; Yield given. Yields of byproduct given. Title compound not separated from byproducts;
149-74-6

dichloromethylphenylsilane

A

34239-75-3

2.4.6.8.10-Pentamethyl-2.4.6.8.10-pentaphenyl-cyclopentasiloxan

546-45-2

1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane

C

77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

D

15331-54-1

cis-trans-cis-2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

Conditions
ConditionsYield
With water In tetrahydrofuran for 10h; Heating;A n/a
B n/a
C n/a
D 11%
...Expand
775-56-4

diethoxy-methyl-phenyl-silane

77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

Conditions
ConditionsYield
With sodium hydroxide

C11H18O2Si

546-45-2

1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane

B

77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

C

75-65-0

tert-butyl alcohol

Conditions
ConditionsYield
In nonane at 160℃; Rate constant; Kinetics; Thermodynamic data; ΔE(excit.);
...Expand
149-74-6

dichloromethylphenylsilane

546-45-2

1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane

B

3424-57-5

cis-1,3,5-trimethyl-1,3,5-triphenylcyclorisiloxane

C

77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

Conditions
ConditionsYield
With H2O In diethyl ether; water addn. of H2O to a soln. of (CH3)(C6H5)SiCl2 in ether;;
...Expand
124-38-9

carbon dioxide

766-08-5

methylphenylsilane

77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

Conditions
ConditionsYield
With Pt(0) nanoparticles immobilized on a monolithic polymeric support at 20℃;
766-08-5

methylphenylsilane

546-45-2

1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane

B

77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

Conditions
ConditionsYield
With water; 2,3-Dihydro-1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene In acetonitrile at 20℃; for 0.1h; Time; Temperature; Solvent; Schlenk technique; Glovebox;
77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

199620-14-9, 13007-92-6

chromium(0) hexacarbonyl

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(CH3Si(C6H5)O)4(Cr(CO)3)4

Conditions
ConditionsYield
In tetrahydrofuran; dibutyl ether cyclotetrasiloxane and Cr(CO)6 were dissolved in Bu2O-THF under N2, soln. was heated under reflux for 122 h; soln. was cooled, passed through a short column of Florisil/Celite, volatiles were removed under vac., residue recrystd. from benzene;79%
77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

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1,3-bis-(2,4-dichloro-benzoyloxymethyl)-1,1,3,3-tetramethyl-disiloxane

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1,11-bis-(2,4-dichloro-benzoyloxymethyl)-1,1,3,5,7,9,11,11-octamethyl-3,5,7,9-tetraphenyl-hexasiloxane

Conditions
ConditionsYield
With sulfuric acid
77-63-4

2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane

60472-60-8

2-hydrido-2,4,6-trimethyl-4,6-diphenylcyclotrisiloxane

Conditions
ConditionsYield
at 465 - 480℃;
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    77-63-4

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    77-63-4

    2,4,6,8-tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane

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  • Casno:

    77-63-4

    MSDS/COA Download

    Tetramethyltetraphenylcyclotetrasiloxane cas 77-63-4

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