17994-01-3

Basic information

• Product Name: (2,5-dimethylphenoxy)(trimethyl)silane
• CAS NO: 17994-01-3
• Molecular Formula: C₁₁H₁₈OSi
• Molecular Weight: 194.3455
• Mol File: 17994-01-3.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 228.6°C at 760 mmHg
• Flash Point: 86.2°C
• Density: 0.905g/cm³
• Vapor Pressure: 0.11mmHg at 25°C
• Refractive Index: 1.475
• CAS DataBase Reference: (2,5-dimethylphenoxy)(trimethyl)silane(CAS DataBase Reference)
• NIST Chemistry Reference: (2,5-dimethylphenoxy)(trimethyl)silane(17994-01-3)
• EPA Substance Registry System: (2,5-dimethylphenoxy)(trimethyl)silane(17994-01-3)

Safety Data

• Hazardous Substances Data: 17994-01-3(Hazardous Substances Data)

Usage

General Description

The chemical compound "(2,5-dimethylphenoxy)(trimethyl)silane" is an organosilicon compound that consists of a phenyl group substituted with two methyl groups and a silicon atom connected to three methyl groups. It is often used as a reagent in organic synthesis, specifically in the preparation of silicon-containing polymers and organic molecules. (2,5-dimethylphenoxy)(trimethyl)silane is also used as a coupling agent in the production of polymeric materials and as a crosslinking agent in silicone rubber formulations. Additionally, it has been studied for its potential applications in the fields of biomedical engineering and materials science.

Upstream product

• 95-87-4 2,5-Dimethylphenol 
• 75-77-4 chloro-trimethyl-silane 
• 24589-78-4 N-methyl-N-trimethylsilyl-2,2,2-trifluoroacetamide 

Relevant articles and documents

Differentiation of isomeric cresols by silylation in combination with gas chromatography/mass spectrometry analysis

Rationale: m-Cresol is listed as a priority controlled contaminant in many countries, but it is very difficult to accurately determine isomeric cresols due to their incomplete chromatographic separation on commercially available chromatographic columns and their nearly identical mass spectra. Methods: Silylation of isomeric cresols was carried out by treatment with N-methyl-N-(trimethylsilyl)trifluoroacetamide. The formed trimethyl(tolyloxy)silanes were analyzed by gas chromatography/mass spectrometry (GC/MS). Theoretical calculations were carried out with the Gaussian 03 program using the density functional theory (DFT) method at the B3LYP/6-311 + G(2d,p) level. Results: The derivatives of three isomeric cresols and six isomeric xylenols have been completely separated on an HP-5MS capillary column within a GC run of only 10 minutes. In addition, the derivative o-cresol can be very easily differentiated from its isomers due to its characteristic base peak ion at m/z 91 in electron ionization (EI)-MS. DFT calculation results indicated that the formation of the abundant fragment ion at m/z 91 is attributed to a facile dissociation pathway involving the shift of a neighboring phenylmethyl hydrogen atom in EI-MS of trimethyl(o-tolyloxy)silane. Conclusions: Silylation provides a promising solution for simultaneous determination of isomeric cresols and isomeric xylenols.

The functionalisation of electron rich aromatic compounds with 1,3-oxazolidines and 1,3-dimethylimidazolidine

N-Phenyl- and N-alkyl-oxazolidines react with alkyl chlorosilanes in the presence of electron rich aromatic compounds with the formation of the expected Mannich bases: 2-methoxycarbonyl-3-methyloxazolidine also reacts with 2-methylfuran in the presence of thionyl chloride to give an a-amino acid derivative: the iminium salt derived from 1,3-dimethylimidazolidine was also shown to react with 2-methylfuran.