127808-42-8

Basic information

• Product Name: Methanesulfonic acid, trifluoro-, nonaphenylcyclopentasilanyl ester
• CAS NO: 127808-42-8
• Molecular Formula: C55H45F3O3SSi5
• Molecular Weight: 983.449
• Mol File: 127808-42-8.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Methanesulfonic acid, trifluoro-, nonaphenylcyclopentasilanyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: Methanesulfonic acid, trifluoro-, nonaphenylcyclopentasilanyl ester(127808-42-8)
• EPA Substance Registry System: Methanesulfonic acid, trifluoro-, nonaphenylcyclopentasilanyl ester(127808-42-8)

Safety Data

• Hazardous Substances Data: 127808-42-8(Hazardous Substances Data)

Upstream product

• 1493-13-6 trifluorormethanesulfonic acid 
• 1770-54-3 decaphenylcyclopentasilane 

Downstream Products

• 136839-79-7 Trifluoro-methanesulfonic acid 1,2,2,3,3,4,5,5-octaphenyl-4-trifluoromethanesulfonyloxy-pentasilolan-1-yl ester 
• 144929-38-4 1-Isopropenyloxy-1,2,2,3,3,4,4,5,5-nonaphenyl-pentasilolane 
• 144944-37-6 C₁₂₂H₁₀₆O₃Si₁₂ 
• 144929-41-9 triphenylsilylnonaphenylcyclopentasilane 
• 130681-65-1 1-(1-Phenoxy-vinyloxy)-1,2,2,3,3,4,4,5,5-nonaphenyl-pentasilolane 
• 144929-39-5 1,1,2,2,3,3,4,4,5-Nonaphenyl-5-phenylethynyl-pentasilolane 
• 174742-56-4 fluorononaphenylcyclopentasilane 
• 169217-06-5 1-Bromo-1,2,2,3,3,4,4,5,5-nonaphenyl-pentasilolane 
• 130706-83-1 (1,2,2,3,3,4,4,5,5-Nonaphenyl-pentasilolan-1-yl)-acetic acid isopropyl ester 
• 72117-54-5 nonaphenylcyclopentasilane 
• 144929-36-2 (1,2,2,3,3,4,4,5,5-Nonaphenyl-pentasilolan-1-yl)-diphenyl-phosphane 
• 144929-37-3 1-Isopropoxy-1,2,2,3,3,4,4,5,5-nonaphenyl-pentasilolane 
• 144929-35-1 Dimethyl-(1,2,2,3,3,4,4,5,5-nonaphenyl-pentasilolan-1-yl)-amine 

Relevant articles and documents

Synthesis, spectroscopy and structure of phenylated cyclopentasilanes

Phenylated cyclopentasilanes Si5Ph10-nXn with X = OSO2CF3, F, Cl, Br, I or H and n = 1 or 2 were prepared in high yield by dearylation of Si5Ph10 with trifluoromethanesulphonic acid (CF3SO3H) and subsequent reaction with lithium or potassium halides and LiAlH4. The trans-1,3-isomers of Si5Ph8X2 were isolated by crystallization and the crystal structure of trans-1,3-difluorooctaphenyl- cyclopentasilane was determined. cis-1,3-, trans-1,2- and cis-1,2-Si5Ph8X2 were identified and characterized by 1H, 19F and 29Si NMR spectroscopy. Si-Si coupling constants were measured using INADEQUATE pulse sequences.

Preparation of New Monomeric, Oligomeric, and Polymeric Silyl Triflates

The highly reactive silyl triflates R3SiOSO2CF3 are valuable reagents in organosilicon chemistry.New triflate derivatives of mono- and oligosilanes have been prepared by substitution of phenyl groups or hydrogen atoms for the trifluoromethanesulfonyl group.The presence of the electron-withdrawing triflate group leads to a strong deactivation of the other substituents at the silicon atom, and the displacement of a second phenyl group at the same silicon atom is much slower than the first step.For this reason in the case of phenylated oligosilanes stepwisemonosubstitution of the silicon atoms has been found.Other new oligomeric silyl triflates are obtained by reaction of silanediyl(triyl) bis(tris)(trifluoromethanesulfonates) with lithium derivatives of organosilicon compounds.Finally, the cleavage of silicon - phenyl bonds of poly by CF3SO3H leads to triflate derivatives of polysilanes. Key Words: Silyl triflates / Organosilanes

Neuartige Silyltriflat-Derivate

The selective cleavage of phenylsilanes by triflic acid gives novel silyltriflates.Unique, substituted derivates have been synthesized by alkylation with organometallic reagents.Triflate derivatives of oligo- and cyclo-silanes are similarly formed.