Pentamethyldisiloxanyl acetate

Base Information

• Chemical Name: Pentamethyldisiloxanyl acetate
• CAS No.: 70693-47-9
• Molecular Formula: C7H18O3Si2
• Molecular Weight: 206.389
• Hs Code.: 2915390090
• European Community (EC) Number: 274-767-7
• DSSTox Substance ID: DTXSID80887710
• Nikkaji Number: J288.767C
• Wikidata: Q82866942
• Mol file: 70693-47-9.mol

Synonyms:70693-47-9;Pentamethyldisiloxanyl acetate;[dimethyl(trimethylsilyloxy)silyl] acetate;1,1,1,3,3-PENTAMETHYL-3-ACETOXYDISILOXANE;Disiloxanol, pentamethyl-, acetate;Pentamethylacetoxydisiloxane;1,1,3,3,3-pentamethyldisiloxanyl acetate;EINECS 274-767-7;1-Disiloxanol, 1,1,3,3,3-pentamethyl-, 1-acetate;1-Disiloxanol,1,1,3,3,3-pentamethyl-, 1-acetate;3-Acetoxy-1,1,1,3,3-pentamethyldisiloxane;acetoxypentamethyldisiloxane;pentamethyldisiloxany-lacetate;C7H18O3Si2;SCHEMBL1051766;C7-H18-O3-Si2;DTXSID80887710;MFCD00053702;AKOS015913078;Pentamethylpropanedisiloxane-1-ol acetate;dimethyl[(trimethylsilyl)oxy]silyl acetate

Chemical Property of Pentamethyldisiloxanyl acetate

Chemical Property:

• Vapor Pressure: 4.03mmHg at 25°C
• Refractive Index: 1.3887
• Boiling Point: 149.4 °C at 760 mmHg
• Flash Point: 36.9 °C
• PSA: 35.53000
• Density: 0.915 g/cm³
• LogP: 2.10280
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 3
• Rotatable Bond Count: 4
• Exact Mass: 206.07944750
• Heavy Atom Count: 12
• Complexity: 172

Purity/Quality:

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

1,1,1,3,3-PENTAMETHYL-3-ACETOXYDISILOXANE 95.00% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): C
• Hazard Codes: C
• Statements: 10-34
• Safety Statements: 26-36/37/39-45

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: CC(=O)O[Si](C)(C)O[Si](C)(C)C

Technology Process of Pentamethyldisiloxanyl acetate

There total 6 articles about Pentamethyldisiloxanyl acetate 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: 90.0%

1-chloro-1,1,3,3,3-pentamethyldisiloxane (2943-62-6) + acetic anhydride (108-24-7) → 1,1,1,3,3-pentamethyl-3-acetoxydisiloxane (70693-47-9)

Guidance literature:

for 5h;

DOI:10.1016/0022-328X(89)80080-4

Reference yield:

1,1,1,3,3-pentamethyl-1,3-disiloxane (1438-82-0) + Allyl acetate (591-87-7) → 1-propen-1-yl acetate (98485-26-8) + 1,1,1,3,3-pentamethyl-3-acetoxydisiloxane (70693-47-9) + C10H24O3Si2 (64185-06-4)

Guidance literature:

With bis(1,5-cyclooctadiene)diiridium(I) dichloride; biphenyl; In ⁽²⁾H₈-toluene; at 40 ℃; for 3h; Sealed tube; Inert atmosphere;

DOI:10.1016/j.jorganchem.2013.11.035

Reference yield:

allyl acetate (acetic acid allylester) + 1,1,1,3,3-pentamethyl-1,3-disiloxane (1438-82-0) + palladium (7440-05-3) → 1,1,1,3,3-pentamethyl-3-acetoxydisiloxane (70693-47-9)

Guidance literature:

In pyrographite;

upstream raw materials:

1-chloro-1,1,3,3,3-pentamethyldisiloxane

acetic anhydride

acetic acid

acetyl iodide

Downstream raw materials:

docosamethyl-decasiloxane

hexadecamethylheptasiloxane

Refernces

• 1、 Voronkov,Trukhina,Belousova,Kuznetsova,Vlasova. "Acyl iodides in organic synthesis: IX. Cleavage of the Si-O-C and Si-O-Si moieties". . p. 501 - 506. Retrieved 2008/02/02.
• 2、 -. "Method for preparing acetoxysiloxanes and organo(poly)siloxanes having halogen bonded to silicon". . . Retrieved 2008/06/13.