21752-78-3

Basic information

• Product Name: but-2-yne-1,4-diylbis(trimethylsilane)
• Synonyms: 1,4-Bis(trimethylsilyl)-2-butyne
• CAS NO: 21752-78-3
• Molecular Formula: C₁₀H₂₂Si₂
• Molecular Weight: 198.4527
• Mol File: 21752-78-3.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 180.5°C at 760 mmHg
• Flash Point: 44°C
• Density: 0.798g/cm³
• Vapor Pressure: 1.21mmHg at 25°C
• Refractive Index: 1.427
• CAS DataBase Reference: but-2-yne-1,4-diylbis(trimethylsilane)(CAS DataBase Reference)
• NIST Chemistry Reference: but-2-yne-1,4-diylbis(trimethylsilane)(21752-78-3)
• EPA Substance Registry System: but-2-yne-1,4-diylbis(trimethylsilane)(21752-78-3)

Safety Data

• Hazardous Substances Data: 21752-78-3(Hazardous Substances Data)

Usage

Description

But-2-yne-1,4-diylbis(trimethylsilane) is a silane derivative with the molecular formula C10H24Si2. It features a central carbon chain with two silicon atoms attached on either end and a triple bond between the two carbon atoms, making it highly reactive and prone to polymerization.

Uses

Used in Organosilicon Chemistry:
But-2-yne-1,4-diylbis(trimethylsilane) is used as a building block in the synthesis of various organic and organometallic compounds, particularly in the field of organosilicon chemistry, for its ability to form stable and versatile silane-based structures.
Used in Production of Functional Materials:
but-2-yne-1,4-diylbis(trimethylsilane) is used as a valuable reagent in the production of functional materials, such as polymers, resins, and silicones, due to its reactive nature and capacity to enhance material properties.
Used in Adhesives and Sealants Industry:
But-2-yne-1,4-diylbis(trimethylsilane) is used as a component in the formulation of adhesives and sealants, leveraging its reactive and polymerization properties to improve the bonding and sealing performance of these products.
Used in Electronic Materials Industry:
It is also utilized in the development of electronic materials, where its unique chemical and physical properties contribute to the creation of advanced materials for electronic devices and components.

Upstream product

• 1291-32-3 zirconocene dichloride 
• 925-90-6 ethylmagnesium bromide 
• 354553-10-9 (Z)-1,4-bis(trimethylsilyl)-1,2,3-butatriene 
• 917-54-4 methyllithium 
• 91312-27-5 2,3-Bis(trimethylstannyl)-1,3-butadiene 
• 75-77-4 chloro-trimethyl-silane 
• 821-10-3 1,4-Dichloro-2-butyne 
• 106-95-6 allyl bromide 
• 4206-67-1 iodo(trimethylsilyl)methane 
• 13361-64-3 trimethyl(propargyl)silane 
• 91312-26-4 1,4-bis(trimethylstannyl)-2-butyne 

Downstream Products

• 80404-96-2 [2-(Methoxy-phenyl-methyl)-buta-2,3-dienyl]-trimethyl-silane 
• 80405-03-4 C₂₀H₂₂O₂ 
• 499158-31-5 8-phenylselanyl-9,10-bis-trimethylsilanylmethyl-tricyclo[4.2.2.0^1,6]dec-9-ene-7-carboxylic acid methyl ester 
• 160203-90-7 2-phenyl-3-vinylidene-4-trimethylsilyltetrahydropyrane 
• 1092526-00-5 (Z)-[1,4-bis(trimethylsilyl)-2-buten-2-yl]pentafluorobenzene 
• 1180490-34-9 (Z)-3-benzyl-4-trimethylsilyl-2-[(trimethylsilyl)methyl]-but-2-enenitrile 
• 1338081-46-1 (E)-N-(1-(2-((Z)-1,4-bis(trimethylsilyl)but-2-en-2-yl)phenyl)ethylidene)-4-methoxyaniline 
• 1453501-07-9 (Z)-3-(2,3,4,5-tetrafluorophenyl)-4-trimethylsilyl-2-(trimethylsilylmethyl)but-2-enenitrile 
• 1453501-18-2 (Z)-3-(4-((Z)-3-cyano-1,4-bis(trimethylsilyl)but-2-en-2-yl)-2,3,5,6-tetrafluorophenyl)-2-propylhex-2-enenitrile 
• 1259332-34-7 6-(oct-4-en-4-yl)-3-[1,4-bis(trimethylsilyl)but-2-en-2-yl]-1,2,4,5-tetrafluorobenzene 
• 1262220-95-0 (Z)-3-(4-chlorophenyl)-4-trimethylsilyl-2-(trimethylsilylmethyl)but-2-enenitrile 

Relevant articles and documents

Migration 1,2 d'un groupe trimethylsilyle au niveau d'un cation vinylique: synthese de dienes conjugues silyles a partir de bis(trimethylsilyl)-1,4 alcynes-2

Alkyl α-substituted 1,4-bis(trimethylsilyl)-2-alkynes react with electrophilic reagents to give silylated conjugated dienes, which result from a 1,2-shift of a trimethylsilyl group to a vinylic cationic center.

An unprecedented dimerization of 1,2,3-butatriene catalyzed by palladium complexes

Dehydrogenative dimerization of (Z)-1,4-bis(trimethylsilyl)-l,2,3- butatriene was catalyzed by Pd complexes in the presence of allyl halides to give predominantly an acyclic conjugated enyne, while addition of methylaluminoxane (MAO) instead of allyl hali

Synthesis of silylallene glycosides and diene diglycosides by C-glycosidation of D-glucal with 1,4-bis(trimethylsilyl)-2-butyne

(Chemical Equation Presented) Silylmethylallenyl glycosides, symmetrical and unsymmetrical diene glycosides, were synthesized by C-glycosidation with 1,4-bis(trimethylsilyl)-2-butyne in good yield. The nature of the product is controlled by the choice of Lewis acid, BF3·OEt2, or SnCl4. The efficient construction of unsymmetrical diene glycosides was achieved in one pot on the basis of the order of addition of sugar starting materials.

DTBB-Catalysed Lithiation of 1,4-Dichloro-2-butyne Under Barbier Conditions: Synthesis of Functionalised Alkynes

The reaction of 1,2-dichloro-2-butyne (1) with an excess of lithium powder and a catalytic amount of 4,4'-di-tert-butylbiphenyl (DTBB, 2,5 molpercent) in the presence of an electrophile in THF