187437
Sigma-Aldrich

BIS(TRIMETHYLSILYL)ACETYL

Linear Formula:

(CH3)3SiC≡

Empform:

C8H18Si2

Nacres: Bis(trimethylsilyl)acetylene
Fw: CSi(CH3)3
Fema No: 24851275
Pubchem Substance Id: 238-671-9
CAS Number: 14630-40-1
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Properties

Properties
assay 99%
bp 136-137 
bromine number ?C (lit.)
density of sugar measuring range 0.752 
depth g/mL 
depth × h × w at 25 
depth × overall h ?C (lit.)
Description BIS(TRIMETHYLSILYL)ACETYL
inlet and outlet diam. 1S/C8H18Si2/c1-9(23)7-8-10(45)6/h1-6H3
inlet and outlet nptm × nptm ZDWYFWIBTZJGOR-UHFFFAOYSA-N
Need written commitment NI0000

Description

Application

Bis(trimethylsilyl)acetylene (BTMSA) was used as starting reagent in the synthesis of functionalized 4-R-1,2-bis(trimethylsilyl)benzenes. It was also used in the synthesis of (+)-brasilenyne and (β-diketanato)Ag(BTMSA).

General description

Bis(trimethylsilyl)acetylene (BTMSA) participates as nucleophile in Friedel-Crafts type acylations and alkylations. BTMSA undergoes rhodium catalyzed addition reaction with diarylacetylenes. It undergoes cycloaddition with 1,5-hexadiynes in the presence of CpCo(CO)2 (Cp=cyclopentadienyl) to form benzocyclobutenes. Structure of BTMSA was characterized by a centre of inversion present on triple bond (length=1.208(3)Å). TiCl4-Et2AlCl catalyzed Diels-Alder reaction of BTMSA with norbornadiene has been reported.

SAFETY INFORMATION

GHS02,GHS07

Signal Word

Danger

H225 - H315 - H319 - H335

P210 - P302 + P352 - P305 + P351 + P338

RIDADRRIDADR

WGK Germany

WGK 3

Flash Point (F)

35.6 °F - closed cup

Flash Point (C)

2 °C - closed cup

Target Organs

Respiratory system

Risk Statement

Supplemental Hazard Statements

DOCUMENTATION

Certificate of Analysis View Sample COA
Certificate of Origin

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