1,3-Dichloro-1,1,3,3-tetraphenyldisiloxane

Base Information

• Chemical Name: 1,3-Dichloro-1,1,3,3-tetraphenyldisiloxane
• CAS No.: 7756-87-8
• Molecular Formula: C24H20Cl2OSi2
• Molecular Weight: 451.499
• European Community (EC) Number: 231-815-1
• DSSTox Substance ID: DTXSID6064791
• Nikkaji Number: J326.545E
• Wikidata: Q81991823
• Mol file: 7756-87-8.mol

Synonyms:7756-87-8;1,3-Dichlorotetraphenyldisiloxane;1,3-Dichloro-1,1,3,3-tetraphenyldisiloxane;chloro-[chloro(diphenyl)silyl]oxy-diphenylsilane;Disiloxane, 1,3-dichloro-1,1,3,3-tetraphenyl-;Disiloxane,1,3-dichloro-1,1,3,3-tetraphenyl-;EINECS 231-815-1;1,1,1,5,5,5-Hexamethyldiphenyltrisiloxane;C24H20Cl2OSi2;SCHEMBL297042;DTXSID6064791;C24-H20-Cl2-O-Si2;1,3-dichlorotetra-phenyldisiloxane;MFCD00039297;AKOS016013038;FT-0636590;A839137;1,3-Dichloro-1,1,3,3-tetraphenylpropanedisiloxane

Chemical Property of 1,3-Dichloro-1,1,3,3-tetraphenyldisiloxane

Chemical Property:

• Appearance/Colour: liquid
• Vapor Pressure: 9.99E-09mmHg at 25°C
• Melting Point: 36-38°C
• Refractive Index: n20/D 1.595(lit.)
• Boiling Point: 474.9 °C at 760 mmHg
• Flash Point: 199.2 °C
• PSA: 9.23000
• Density: 1.22 g/cm³
• LogP: 3.99380
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 6
• Exact Mass: 450.0429737
• Heavy Atom Count: 29
• Complexity: 413

Purity/Quality:

98%,99%, ^*data from raw suppliers

1,3-Dichlorotetraphenyldisiloxane 95% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): C
• Hazard Codes: C
• Statements: 34
• Safety Statements: 26-36/37/39-45-27

MSDS Files:

SDS file from LookChem

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Chlorosilanes
• Canonical SMILES: C1=CC=C(C=C1)[Si](C2=CC=CC=C2)(O[Si](C3=CC=CC=C3)(C4=CC=CC=C4)Cl)Cl

Technology Process of 1,3-Dichloro-1,1,3,3-tetraphenyldisiloxane

There total 5 articles about 1,3-Dichloro-1,1,3,3-tetraphenyldisiloxane 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: 87.0%

1,1,3,3-tetraphenyldisiloxane (15545-80-9) → 1,3-dichloro-1,1,3,3-tetraphenyldisiloxane (7756-87-8)

Guidance literature:

With trichloroisocyanuric acid; In tetrahydrofuran; at -20 ℃; for 0.25h; Inert atmosphere; Schlenk technique;

DOI:10.1016/j.jorganchem.2018.08.022

Reference yield: 41.0%

diphenylsilyl dichloride (80-10-4) → 1,3-dichloro-1,1,3,3-tetraphenyldisiloxane (7756-87-8)

Guidance literature:

With water; In tetrahydrofuran; for 3h; Reflux;

DOI:10.1016/j.jorganchem.2010.10.013

Reference yield:

diphenylsilyl dichloride (80-10-4) → 1,3-dichloro-1,1,3,3-tetraphenyldisiloxane (7756-87-8) + 1,1,3,3,5,5-hexaphenylcyclotrisiloxane (512-63-0) + hexaphenyl-1,5-dichloro-trisiloxane (7756-88-9)

Guidance literature:

With H₂O; In diethyl ether; byproducts: HCl; partial hydrolysis of (C6H5)2SiCl2 in ether with H2O/dioxane; sepn. of HCl by a dry stream of N2;; extraction with n-heptane;;

DOI:10.1021/ja01228a034

upstream raw materials:

diphenylsilyl dichloride

1,1,3,3-tetraphenyldisiloxane

Downstream raw materials:

1.3-Di-tert.-butylperoxytetraphenyldisiloxan

chloro-trimethyl-silane

1,1,3,3-tetraphenyl-1,3-di(prop-2-enyl)disiloxane

1,3-dimethoxy-1,1,3,3-tetraphenyldisiloxane

Refernces

• 1、 Hafner, Thomas,Torvisco, Ana,Uhlig, Frank. "Building blocks for oligomeric siloxanes –selective chlorination of hydrido-siloxanes". supporting information. p. 1 - 4. Retrieved 2018/09/11.
• 2、 Seki, Hiroyasu,Abe, Noritaka,Abe, Yoshimoto,Gunji, Takahiro. "Synthesis and structure of syn,anti,syn-pentacyclic ladder oligomethylsilsesquioxane". supporting information; experimental part. p. 722 - 723. Retrieved 2011/08/08.