Octadecamethylnonasiloxane-1,17-diol

Base Information

• Chemical Name: Octadecamethylnonasiloxane-1,17-diol
• CAS No.: 18678-58-5
• Molecular Formula: C18H56 O10 Si9
• Molecular Weight: 685.406
• Hs Code.: 2934999090
• DSSTox Substance ID: DTXSID50697803
• Nikkaji Number: J1.253.364K
• Wikidata: Q82627821
• Mol file: 18678-58-5.mol

Synonyms:18678-58-5;UNII-IRO2VBE2O9;Octadecamethylnonasiloxane-1,17-diol;IRO2VBE2O9;Dimethiconol (685 MW);1,17-Dihydroxyoctadecamethylnonasiloxane;1,17-Nonasiloxanediol, 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,17,17-octadecamethyl-;DTXSID50697803;Dimethylsilanediylbis[oxy(dimethylsilanediyl)oxy(dimethylsilanediyl)oxy(dimethylsilanediyl)oxy]bis(dimethylsilanol)

Chemical Property of Octadecamethylnonasiloxane-1,17-diol

Chemical Property:

• PSA: 114.30000
• LogP: 5.42000
• Hydrogen Bond Donor Count: 2
• Hydrogen Bond Acceptor Count: 10
• Rotatable Bond Count: 16
• Exact Mass: 684.17968679
• Heavy Atom Count: 37
• Complexity: 698

Purity/Quality:

99%min ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: C[Si](C)(O)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O
• Uses: 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,17,17-Octadecamethyl-1,17-nonasiloxanediol is an important organosilicon intermediate.

Technology Process of Octadecamethylnonasiloxane-1,17-diol

There total 2 articles about Octadecamethylnonasiloxane-1,17-diol 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:

dodecamethylcyclohexasilane (4098-30-0) → tetradecamethylcycloheptasiloxane (107-50-6) + hexadecamethylcyclooctasiloxane (556-68-3) + octadecamethyl-cyclononasiloxane (556-71-8) + Hexamethylcyclotrisiloxane (541-05-9) + octamethylcyclotetrasiloxane (556-67-2) + decamethylcyclopentasiloxane (541-02-6) + dodecamethyl-cyclohexasiloxane (540-97-6) + 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15-hexadecamethyloctasiloxane-1,15-diol (4938-87-8) + 1,1,3,3,5,5,7,7,9,9,11,11-dodecamethylhexasiloxane-1,11-diol (4029-00-9) + C30H92O16Si15 + eicosamethylcyclodecasiloxane (18772-36-6) + tetracosamethyl cyclododecasiloxane (18919-94-3) + Tricontamethylcyclopentadecasiloxan (23523-14-0) + α,ω-Dihydroxy-tetradecamethyl-heptasiloxan (3195-63-9) + Docosamethylcycloundecasiloxane (18766-38-6) + α,ω-Dihydroxy-polydimethylsiloxan + hexacosamethyl-cyclotridecasiloxane (23732-94-7) + Octacosamethylcyclotetradeca-siloxane (149050-40-8) + α,ω-Dihydroxy-octadecamethyl-nonasiloxan (18678-58-5) + 1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,17,17,19,19,21,21,23,23,25,25,27,27,29,29,31,31-dotriacontamethylhexadecasiloxane-1,31-diol + Dotriacontamethylcyclohexadecasiloxane + tetratriacontamethylcycloheptadecasiloxane + C22H68O12Si11 + C24H74O13Si12 + C34H104O18Si17 + permethyldecasiloxane-1,19-diol + C28H86O15Si14

Guidance literature:

dodecamethylcyclohexasilane; With potassium tert-butylate; In tetrahydrofuran; at 20 ℃; for 0.5h; Inert atmosphere; Schlenk technique;

With hydrogen; C₆₂H₅₁N₂Ni₂^(1-)*K⁽¹⁺⁾*2C₄H₁₀O₂; In tetrahydrofuran; at 45 ℃; for 24h; under 1500.15 Torr; Schlenk technique;

With water; In tetrahydrofuran; at -40 - 20 ℃; for 12h; Schlenk technique;

DOI:10.1002/anie.201907525

Reference yield:

α,ω-Dichlor-octadecamethyl-nonasiloxan (18537-11-6) → α,ω-Dihydroxy-octadecamethyl-nonasiloxan (18678-58-5)

Guidance literature:

With sodium hydroxide; In diethyl ether;

DOI:10.1007/BF00911383

Reference yield:

α,ω-Dihydroxy-octadecamethyl-nonasiloxan (18678-58-5) + Phenyltrichlorosilane (98-13-5) → C60H170O30Si28 (7281-81-4)

Guidance literature:

With pyridine; In diethyl ether;

DOI:10.1007/BF01083833

upstream raw materials:

α,ω-Dichlor-octadecamethyl-nonasiloxan

dodecamethylcyclohexasilane

Downstream raw materials:

C₆₀H₁₇₀O₃₀Si₂₈

Refernces

• 1、 Comas-Vives, Aleix,Eiler, Frederik,Grützmacher, Hansj?rg,Pribanic, Bruno,Trincado, Monica,Vogt, Matthias. "Hydrogenolysis of Polysilanes Catalyzed by Low-Valent Nickel Complexes". supporting information. p. 15603 - 15609. Retrieved 2020/04/29.