Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-

Base Information

• Chemical Name: Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-
• CAS No.: 77-63-4
• Deprecated CAS: 83891-33-2
• Molecular Formula: C28H32O4Si4
• Molecular Weight: 544.902
• European Community (EC) Number: 201-045-0
• UNII: 5D1PCT0W4D,3X941D1N9O,2F641J843Q,S730L28U5W
• DSSTox Substance ID: DTXSID0058809
• Nikkaji Number: J1.829.508C,J1.829.509A,J1.829.510E,J1.829.511C,J192.563F,J1.953.146E
• Wikidata: Q27254653,Q27258170,Q27261849,Q27288749
• Mol file: 77-63-4.mol

Synonyms:77-63-4;2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane;CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-;2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;Tetramethyltetraphenylcyclotetrasiloxane;UNII-69V746D1JO;UNII-2F641J843Q;3X941D1N9O;S730L28U5W;EINECS 201-045-0;2F641J843Q;2',4',6,8-Tetramethyl-2,4,6',8'-tetraphenylcyclotetrasiloxane;R-2,cis-4,trans-6,trans-8-tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane;15331-54-1;trans-2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;2,4,6,8-Tetramethyl-2,4,6,8-tetraphenyl-[1,3,5,7,2,4,6,8]cyclotetrasiloxane;2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4alpha,6beta,8beta)-;Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2alpha,4alpha,6beta,8beta)-;4885-39-6;5131-04-4;Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2.alpha.,4.alpha.,6.beta.,8.beta.)-;C28H32O4Si4;5D1PCT0W4D;SCHEMBL206800;UNII-3X941D1N9O;UNII-S730L28U5W;DTXSID0058809;69V746D1JO;C28-H32-O4-Si4;tetraphenyltetramethylcyclo-tetrasiloxane;Tetrtaphenyltetramethylcyclotetrasiloxane;AS-75553;Q27254653;Q27258170;Q27261849;Q27288749;cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8- tetraphenyl-;2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane, technical;2,4,6,8-Tetramethyl-2alpha,4beta,6alpha,8beta-tetraphenylcyclotetrasiloxane;2alpha,4beta,6beta,8alpha-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;2beta,4alpha,6beta,8alpha-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;2beta,4beta,6alpha,8alpha-Tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane;(2alpha,4alpha,6alpha,8alpha)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane;(2alpha,4alpha,6alpha,8beta)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane;(2alpha,4alpha,6beta,8beta)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane;(2alpha,4beta,6alpha,8beta)-2,4,6,8-tetramethyltetraphenylcyclotetrasiloxane;2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4alpha,6alpha,8beta)-;2,4,6,8-Tetramethyltetraphenylcyclotetrasiloxane, (2alpha,4beta,6alpha,8beta)-;2alpha,4alpha,6alpha,8alpha-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;2alpha,4alpha,6alpha,8beta-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane;4-[(2R,6S)-2,6-dimethyl-1-piperidyl]-1-phenyl-1-pyridin-2-yl-butan-1-olhydrochloride;2,4,6,8-TETRAMETHYL-2.ALPHA.,4.ALPHA.,6.ALPHA.,8.ALPHA.-TETRAPHENYLCYCLOTETRASILOXANE;2,4,6,8-TETRAMETHYL-2.ALPHA.,4.BETA.,6.ALPHA.,8.BETA.-TETRAPHENYLCYCLOTETRASILOXANE;2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.ALPHA.)-;2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.BETA.)-;2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.ALPHA.,6.BETA.,8.BETA.)-;2,4,6,8-TETRAMETHYLTETRAPHENYLCYCLOTETRASILOXANE, (2.ALPHA.,4.BETA.,6.ALPHA.,8.BETA.)-;CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.ALPHA.)-;CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-, (2.ALPHA.,4.ALPHA.,6.ALPHA.,8.BETA.)-;CYCLOTETRASILOXANE, 2,4,6,8-TETRAMETHYL-2,4,6,8-TETRAPHENYL-, (2.ALPHA.,4.BETA.,6.ALPHA.,8.BETA.)-;Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2alpha,4alpha,6alpha,8beta)-;Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-, (2alpha,4beta,6alpha,8beta)-

Chemical Property of Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-

Chemical Property:

• Vapor Pressure: 2.17E-09mmHg at 25°C
• Melting Point: 99°C
• Refractive Index: 1.576
• Boiling Point: 493.2°C at 760 mmHg
• Flash Point: 211.7°C
• PSA: 36.92000
• Density: 1.13
• LogP: 3.98320
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 4
• Rotatable Bond Count: 4
• Exact Mass: 544.13776564
• Heavy Atom Count: 36
• Complexity: 576

Purity/Quality:

99.0% ^*data from raw suppliers

2,4,6,8-Tetramethyl-2,4,6,8-tetraphenylcyclotetrasiloxane technical ^*data from reagent suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: C[Si]1(O[Si](O[Si](O[Si](O1)(C)C2=CC=CC=C2)(C)C3=CC=CC=C3)(C)C4=CC=CC=C4)C5=CC=CC=C5
• Uses: Reactant for synthesis of ethylhydrosilicone fluids

Technology Process of Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl-

There total 8 articles about Cyclotetrasiloxane, 2,4,6,8-tetramethyl-2,4,6,8-tetraphenyl- which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 65.5%

dichloromethylphenylsilane (149-74-6) → 1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane (546-45-2) + 2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane (77-63-4)

Guidance literature:

With pyridine; sodium hydrogencarbonate; In acetone; at 20 ℃; for 3h;

DOI:10.1080/10426500307895

Reference yield: 11.0%

dichloromethylphenylsilane (149-74-6) → 2.4.6.8.10-Pentamethyl-2.4.6.8.10-pentaphenyl-cyclopentasiloxan (34239-75-3) + 1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane (546-45-2) + 2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane (77-63-4) + cis-trans-cis-2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane (15331-54-1)

Guidance literature:

With water; In tetrahydrofuran; for 10h; Heating;

DOI:10.1246/bcsj.78.1105

Reference yield:

dichloromethylphenylsilane (149-74-6) → 1,3,5-triphenyl-1,3,5-trimethylcyclotrisiloxane (546-45-2) + cis-1,3,5-trimethyl-1,3,5-triphenylcyclorisiloxane (3424-57-5) + 2,4,6,8-tetraphenyl-2,4,6,8-tetramethylcyclotetrasiloxane (77-63-4)

Guidance literature:

With H₂O; In diethyl ether; water; addn. of H2O to a soln. of (CH3)(C6H5)SiCl2 in ether;;

DOI:10.1021/ja01191a064

upstream raw materials:

diethoxy-methyl-phenyl-silane

dichloromethylphenylsilane

carbon dioxide

methylphenylsilane

Downstream raw materials:

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

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

1-hydro-1,3,5,7-tetramethyl-3,5,7-triphenylcyclotetrasiloxane

tributoxy-methyl-silane

Refernces

• 1、 Qing, Guoping,Cui, Chunming. "Controlled synthesis of cyclosiloxanes by NHC-catalyzed hydrolytic oxidation of dihydrosilanes". supporting information. p. 8746 - 8750. Retrieved 2017/07/22.
• 2、 Unno, Masafumi,Chang, Shengho,Matsumoto, Hideyuki. "cis-trans-cis-Tetrabromotetramethylcyclotetrasiloxane: A versatile precursor of ladder silsesquioxanes". . p. 1105 - 1109. Retrieved 2007/10/03.