122571-17-9

Basic information

• Product Name: 1,3-Bis(4-methoxyphenyl)-1,1,3,3-tetramethyldisiloxane, 97%
• Synonyms: 1,3-Bis(4-methoxyphenyl)-1,1,3,3-tetramethyldisiloxane, 97%;(4-Methoxyphenyl)({[(4-methoxyphenyl)-dimethylsilyl]oxy})dimethylsilane
• CAS NO: 122571-17-9
• Molecular Formula: C₁₈H₂₆O₃Si₂
• Molecular Weight: 346.58
• Mol File: 122571-17-9.mol

Chemical Properties

• Boiling Point: 381.2°Cat760mmHg
• Flash Point: 150.5°C
• Appearance: /
• Density: 1.02g/cm³
• Vapor Pressure: 1.13E-05mmHg at 25°C
• Refractive Index: 1.516
• CAS DataBase Reference: 1,3-Bis(4-methoxyphenyl)-1,1,3,3-tetramethyldisiloxane, 97%(CAS DataBase Reference)
• NIST Chemistry Reference: 1,3-Bis(4-methoxyphenyl)-1,1,3,3-tetramethyldisiloxane, 97%(122571-17-9)
• EPA Substance Registry System: 1,3-Bis(4-methoxyphenyl)-1,1,3,3-tetramethyldisiloxane, 97%(122571-17-9)

Safety Data

• Hazardous Substances Data: 122571-17-9(Hazardous Substances Data)

Usage

InChI:InChI=1/C18H26O3Si2/c1-19-15-7-11-17(12-8-15)22(3,4)21-23(5,6)18-13-9-16(20-2)10-14-18/h7-14H,1-6H3

Upstream product

• 15951-41-4 bis(trimethylsilyl)dichloromethane 
• 62244-55-7 (p-Methoxy-phenyl)-dimethyl-fluorsilan 
• 1432-38-8 (p-methoxyphenyl)dimethylsilane 
• 3277-26-7 1,1,3,3-Tetramethyldisiloxane 
• 696-62-8 para-iodoanisole 
• 124-38-9 carbon dioxide 
• 104-92-7 1-bromo-4-methoxy-benzene 
• 2401-73-2 1,1,3,3-tetramethyl-1,3-dichlorodisiloxane 
• 2372-33-0 chlorodimethyl(4-methoxyphenyl)silane 
• 4199-03-5 1-(4-Methoxyphenyl)-1,1,2,2,2-pentamethyldisilane 
• 109-72-8 n-butyllithium 

Downstream Products

• 2401-73-2 1,1,3,3-tetramethyl-1,3-dichlorodisiloxane 
• 13021-18-6 1-(4'-methoxy-biphenyl-4-yl)-ethanone 
• 5958-02-1 3-(4-methoxyphenyl)pyridine 
• 613-37-6 4-methoxylbiphenyl 
• 53040-92-9 4-(4-tolyl)anisole 
• 18158-44-6 4-dimethylamino-4'-methoxybiphenyl 

Relevant articles and documents

Supported gold nanoparticle catalyst for the selective oxidation of silanes to silanols in water

Hydroxyapatite-supported gold nanoparticles (AuHAP) can act as highly efficient and reusable catalysts for the oxidation of diverse silanes into silanols in water; this is the first catalytic methodology for the selective synthesis of aliphatic silanols using water under organic-solvent-free conditions.

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.

SILOXANE COMPOUND PRODUCTION METHOD AND GOLD CATALYST USED THEREIN

PROBLEM TO BE SOLVED: To provide a technique for synthesizing a siloxane compound from a silane compound with high efficiency using a catalytic reaction under a safe and low environmental load condition. SOLUTION: In a siloxane compound production method, a silane compound is brought into contact with a gold catalyst carrying nano-sized gold particles on a carbon carrier, using water as a solvent in an inert gas atmosphere. A gold catalyst carrying nano-sized gold particles on a carbon carrier can be used in the method, and the gold particles have a crystallite size of 10-100 nm. SELECTED DRAWING: None COPYRIGHT: (C)2017,JPOandINPIT

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.

Pd-catalyzed synthesis of symmetrical and unsymmetrical siloxanes

A palladium-catalyzed arylation of hydrosiloxanes was developed for the synthesis of symmetrical and unsymmetrical siloxanes. Reactive functional moieties such as hydroxy or cyano groups were able to tolerate the reaction conditions and several novel unsymmetrical siloxanes were synthesized in moderate to high yield.

Catalytic synthesis of silyl formates with 1 atm of CO2 and their utilization for synthesis of formyl compounds and formic acid

In the presence of simple Rh2(OAc)4 and K 2CO3, the hydrosilylation of CO2 (1 atm) with various hydrosilanes efficiently proceeded to afford the corresponding silyl formates in moderate to high yields (53-90% yields). By using the dimethylphenylsilyl formate produced by the hydrosilylation, formamides, formic acid, and a secondary alcohol (via an aldehyde) could be synthesized by the reaction with various nucleophilic reagents such as amines, aniline, water, and the Grignard reagent.

Aryl-aryl bond formation by the fluoride-free cross-coupling of aryldisiloxanes with aryl bromides

The prevalence of the biaryl structural motif in biologically interesting and synthetically important molecules has inspired considerable interest in the development of methods for aryl-aryl bond formation. Herein we describe a novel strategy for this process involving the fluoride-free, palladium-catalysed cross-coupling of readily accessible aryldisiloxanes and aryl bromides. Using a statistical-based optimisation process, preparatively useful reaction conditions were formulated to allow the cross-coupling of a wide range of different substrates. This methodology represents an attractive, cost-efficient, flexible and robust alternative to the traditional transition-metal-catalysed routes typically used to generate molecules containing the privileged biaryl scaffold.

Highly selective oxidation of organosilanes to silanols with hydrogen peroxide catalyzed by a lacunary polyoxotungstate

Silanol synthesis: Divacant lacunary polyoxotungstate (nBu4N+)4[g- SiW10O34(H2O)2] (I) is an efficient homogeneous catalyst for highly selective oxidation of organosilanes to silanols with 30/60% aqueous H2O2. Various kinds of silanes 1 containing aryl, alkyl, alkenyl, alkynyl and alkoxy groups are chemoselectively converted into the corresponding silanols 2 in high yields with only one equivalent of aqueous H2O2 with respect to the substrate.

Preparation of the iodides (Me3Si)2C(SiMe2C6H4Y)(SiMe2I) and some related compounds

The preparations of: (a) the iodides (Me3Si)2C(SiMe2C6H4Y)(SiMe2I) (Y=H, p-OMe, p-Me, p-Cl, m-CF3), via the corresponding hydrides; (b) the compounds (Me3Si)2C(SiMe2Ph)(SiMe2X) with X=F, O2CCF3, OMe, N3, NCS and Cl: and (c) the iodide (p-MeC6H4)3CSiMe2I are described. Key words: Silicon; Iodide; Fluoride; Hydride; Trimethylsilyl