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Bis(trimethylsilyl)acetylene

ALDRICH/187437 - 99%

Synonym: BTMSA

CAS Number: 14630-40-1
Empirical Formula (Hill Notation): C8H18Si2
Molecular Weight: 170.40
EC Number: 238-671-9
MDL Number: MFCD00008276
Linear Formula: (CH3)3SiC≡CSi(CH3)3
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-187437-10G 10 g
 $65.60
1/EA		 Add To Favorites
45-187437-50G 50 g
 $230.00
1/EA		 Add To Favorites
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 187437-50G.

 

assay 99%
bp 136-137 °C (lit.)
density 0.752 g/mL at 25 °C (lit.)
InChI 1S/C8H18Si2/c1-9(2,3)7-8-10(4,5)6/h1-6H3
InChI key ZDWYFWIBTZJGOR-UHFFFAOYSA-N
mp 21-24 °C (lit.)
Quality Level 100 
refractive index n20/D 1.427 (lit.)
SMILES string C[Si](C)(C)C#C[Si](C)(C)C
storage temp. 2-8°C
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.
Packaging: 10, 50 g in glass bottle
Purity 99%
bp 136-137 °C (lit.)
mp 21-24 °C (lit.)
Density 0.752 g/mL at 25 °C (lit.)
Refractive Index n20/D 1.427 (lit.)
Storage Temp. 2-8°C
UNSPSC 12352100

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