18055-70-4

Basic information

• Product Name: 1,3-Di(p-tolyl)-1,1,3,3-tetramethyldisiloxane, 97%
• Synonyms: 1,3-Di(p-tolyl)-1,1,3,3-tetramethyldisiloxane, 97%
• CAS NO: 18055-70-4
• Molecular Formula: C₁₈H₂₆OSi₂
• Molecular Weight: 314.57
• Mol File: 18055-70-4.mol
• Article Data: 12

Chemical Properties

• Appearance: /
• Water Solubility: Not miscible or difficult to mix with water.
• CAS DataBase Reference: 1,3-Di(p-tolyl)-1,1,3,3-tetramethyldisiloxane, 97%(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-Di(p-tolyl)-1,1,3,3-tetramethyldisiloxane, 97%(18055-70-4)
• EPA Substance Registry System: 1,3-Di(p-tolyl)-1,1,3,3-tetramethyldisiloxane, 97%(18055-70-4)

Safety Data

• Hazardous Substances Data: 18055-70-4(Hazardous Substances Data)

Usage

Uses

It is employed as a intermediates for pharmaceutical.

InChI:InChI=1S/C18H26OSi2/c1-15-7-11-17(12-8-15)20(3,4)19-21(5,6)18-13-9-16(2)10-14-18/h7-14H,1-6H3

Upstream product

• 17881-63-9 chlorodimethyl(4-methylphenyl)silane 
• 109-72-8 n-butyllithium 
• 15951-41-4 bis(trimethylsilyl)dichloromethane 
• 33664-05-0 (p-Methoxy-phenyl)-dimethyl-fluor-silan 
• 56633-16-0 1,1-dimethylphenylmethylsilanol 
• 4199-04-6 (4-methylphenyl)pentamethyldisilane 
• 106-38-7 para-bromotoluene 
• 4294-57-9 para-methylphenylmagnesium bromide 
• 17988-22-6 ethoxy(dimethyl)(p-tolyl)silane 
• 1432-39-9 dimethyl-p-tolylsilane 
• 2401-73-2 1,1,3,3-tetramethyl-1,3-dichlorodisiloxane 
• 3277-26-7 1,1,3,3-Tetramethyldisiloxane 
• 624-31-7 4-tolyl iodide 
• 766-77-8 Dimethylphenylsilane 

Downstream Products

• 33664-05-0 (p-Methoxy-phenyl)-dimethyl-fluor-silan 
• 17881-63-9 chlorodimethyl(4-methylphenyl)silane 
• 18054-10-9 4,4'-(1,1,3,3-tetramethyldisiloxane-1,3-diyl)dibenzoic acid 
• 18673-84-2 {me2(ph-4-COOme)Si}2O 
• 4423-09-0 4-(3-pyridyl)toluene 

Relevant articles and documents

Nickel(0) catalyzed oxidation of organosilanes to disiloxanes by air as an oxidant

We report here an efficient non-aqueous route to symmetrical disiloxanes from their corresponding organosilanes using Ni(COD)2 with 3,4,7,8-tetramethyl-1,10-phenanthroline in air. Our methodology is very simple and high yielding. The reaction mechanism is also proposed.

Use of MnCl2/tBuOOH oxidizing system for conversion of p-tolyldisiloxanes to p-carboxyphenyldisiloxanes

The possibility of Mn-catalyzed oxidation of p-tolyldisiloxanes 1a-b to the corresponding p-carboxyphenyldisiloxanes 2a-b was studied using a commercially available and inexpensive system based on MnCl2/tBuOOH. Products 2a and 2b were isolated in 51% and 32% yields, respectively.

Disiloxane Synthesis Based on Silicon-Hydrogen Bond Activation using Gold and Platinum on Carbon in Water or Heavy Water

Disiloxanes possessing a silicon-oxygen linkage are important as frameworks for functional materials and coupling partners for Hiyama-type cross coupling. We found that disiloxanes were effectively constructed of hydrosilanes catalyzed by gold on carbon in water as the solvent and oxidant in association with the emission of hydrogen gas at room temperature. The present oxidation could proceed via various reaction pathways, such as the hydration of hydrosilane into silanol, dehydrogenative coupling of hydrosilane into disilane, and the subsequent corresponding reactions to disiloxane. Additionally, the platinum on carbon catalyzed hydrogen-deuterium exchange reaction of arylhydrosilanes as substrates in heavy water proceeded on the aromatic nuclei at 80 °C with high deuterium efficiency and high regioselectivity at the only meta and para positions of the aromatic-silicon bond to give the deuterium-labeled disiloxanes.