72208-75-4

Basic information

• Product Name: C₂₃H₄₀OSi₄
• CAS NO: 72208-75-4
• Molecular Weight: 444.912
• Mol File: 72208-75-4.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: C₂₃H₄₀OSi₄(CAS DataBase Reference)
• NIST Chemistry Reference: C₂₃H₄₀OSi₄(72208-75-4)
• EPA Substance Registry System: C₂₃H₄₀OSi₄(72208-75-4)

Safety Data

• Hazardous Substances Data: 72208-75-4(Hazardous Substances Data)

Upstream product

• 68260-16-2 C₂₂H₃₇ISi₄ 
• 67-56-1 methanol 
• 1068-69-5 Tris(trimethylsilyl)methane 

Relevant articles and documents

Photoinduced Ionic and Free-radical Reactions of Some Organosilicon Iodides

U.v. irradiation (medium-pressure Hg lamp) induces reaction of TsiSiPh2I (1a) 3Si)3C> with methanol to give both the unrearranged and rearranged methoxides TsiSiPh2OMe and (Me3Si)2C(SiPh2Me)(SiMe2OMe); in the presence of LiNO3 some (Me3Si)2C(SiPh2Me)(SiMe2ONO2) is also formed.The analogous solvolysis in PhNH2 gives the rearranged anilide (Me3Si)2C(SiPh2Me)(SiMe2NHPh).These reactions are thought to involve the intermediate formation of a silico-cation.On the other hand the exclusive formation of the unrearranged chloride TsiSiPh2Cl upon irradiation in CCl4 appears to involve a free-radical process.The photoinduced rearrangement of (1a) to (Me3Si)2C(SiPh2Me)(SiMe2I) in n-C5H12, n-C6H14, Et2O, and PhOMe may involve a cationic intermediate, but a free radical rearrangement cannot be ruled out; the subsequent formation of a disilaindane derivative (6) in PhOMe probably involves cyclization of a free radical.The iodide TsiSiPhMeI also undergoes rearrangement to (Me3Si)2C(SiPhMe2)(SiMe2I) upon irradiation in n-C5H12.The methanolysis of TsiSiMe2I is also photo-catalysed, though less effectively than that of (1a).