495417-68-0

Basic information

• Product Name: 2-Propenoic acid, 2-methyl-, 10,10,11,11-tetramethyl-3,6,9-trioxa-10-siladodec-1-yl ester
• CAS NO: 495417-68-0
• Molecular Formula: C16H32O5Si
• Molecular Weight: 332.513
• Mol File: 495417-68-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2-Propenoic acid, 2-methyl-, 10,10,11,11-tetramethyl-3,6,9-trioxa-10-siladodec-1-yl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 2-Propenoic acid, 2-methyl-, 10,10,11,11-tetramethyl-3,6,9-trioxa-10-siladodec-1-yl ester(495417-68-0)
• EPA Substance Registry System: 2-Propenoic acid, 2-methyl-, 10,10,11,11-tetramethyl-3,6,9-trioxa-10-siladodec-1-yl ester(495417-68-0)

Safety Data

• Hazardous Substances Data: 495417-68-0(Hazardous Substances Data)

Upstream product

• 920-46-7 Methacryloyl chloride 
• 201037-95-8 2-(2-(2-(tert-butyl-dimethyl-silanyloxy)-ethoxy)-ethoxy)-ethanol 

Relevant articles and documents

Synthesis of water-soluble polymethacrylates by living anionic polymerization of trialkylsilyl-protected oligo(ethylene glycol) methacrylates

2-[2-[(tert-Butyldimethylsilyl)oxy]ethoxy]ethyl methacrylate (2) and 2-[2-[2-[(tert-butyldimethylsilyl)oxy] ethoxy] ethoxy] ethyl methacrylate (3) were polymerized anionically in THF at -78 °C for 2-24 h. The anionic initiator systems included 1,1-diphenyl-3-methylpentyllithium/lithium chloride and diphenylmethylpotassium/diethylzinc. The polymerization of novel tert-butyldimethylsilyl-protected oligo(ethylene glycol) methacrylates, 2 and 3, proceeded quantitatively in each case. The resulting polymers possessed the predicted molecular weights based on the molar ratios of monomers to initiators, and narrow molecular weight distributions (Mw/Mn 1.1). The stability of the propagating carbanion of poly(2) and poly(3) was ascertained by the quantitative efficiencies of the sequential block copolymerizations using tert-butyl methacrylate (tBMA). Well-defined block copolymers, poly(2)-block-poly(tBMA) and poly(3)block-poly(tBMA), were obtained. The trialkylsilyl protecting groups of poly(2) and poly(3) were quantitatively hydrolyzed using 2 N HC1 in aqueous THF at 0 °C for 2 h to give tailored poly[di(ethylene glycol) methacrylate] and poly[tri(ethylene glycol) methacrylate], respectively. Both polymethacrylates obtained after deprotection were readily soluble in water due to the high polarity of the hydrophilic oligo(ethylene glycol) pendant units with terminal OH functionality.