Products Categories
CAS No.: | 77-63-4 |
---|---|
Name: | 2,4,6,8-tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane |
Article Data: | 17 |
Molecular Structure: | |
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 |
dichloromethylphenylsilane
1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane
B
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
Conditions | Yield |
---|---|
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; |
dichloromethylphenylsilane
A
2.4.6.8.10-Pentamethyl-2.4.6.8.10-pentaphenyl-cyclopentasiloxan
1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane
C
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
D
cis-trans-cis-2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
Conditions | Yield |
---|---|
With water In tetrahydrofuran for 10h; Heating; | A n/a B n/a C n/a D 11% |
diethoxy-methyl-phenyl-silane
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
Conditions | Yield |
---|---|
With sodium hydroxide |
1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane
B
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
C
tert-butyl alcohol
Conditions | Yield |
---|---|
In nonane at 160℃; Rate constant; Kinetics; Thermodynamic data; ΔE(excit.); |
dichloromethylphenylsilane
1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane
B
cis-1,3,5-trimethyl-1,3,5-triphenylcyclorisiloxane
C
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
Conditions | Yield |
---|---|
With H2O In diethyl ether; water addn. of H2O to a soln. of (CH3)(C6H5)SiCl2 in ether;; |
carbon dioxide
methylphenylsilane
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
Conditions | Yield |
---|---|
With Pt(0) nanoparticles immobilized on a monolithic polymeric support at 20℃; |
methylphenylsilane
1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane
B
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
Conditions | Yield |
---|---|
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; |
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
chromium(0) hexacarbonyl
(CH3Si(C6H5)O)4(Cr(CO)3)4
Conditions | Yield |
---|---|
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% |
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
1,3-bis-(2,4-dichloro-benzoyloxymethyl)-1,1,3,3-tetramethyl-disiloxane
1,11-bis-(2,4-dichloro-benzoyloxymethyl)-1,1,3,5,7,9,11,11-octamethyl-3,5,7,9-tetraphenyl-hexasiloxane
Conditions | Yield |
---|---|
With sulfuric acid |
2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane
2-hydrido-2,4,6-trimethyl-4,6-diphenylcyclotrisiloxane
Conditions | Yield |
---|---|
at 465 - 480℃; |