BIS(TRIMETHYLSILYL)ACETYLENE 99% (C005B-018589)

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)Ã…). TiCl₄-Et₂AlCl catalyzed Diels-Alder reaction of BTMSA with norbornadiene has been reported.

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).

Molecular Weight: 170.40. Empirical Formula: C₈H₁₈Si₂. linearFormula: (CH₃)₃SiC≡. CSi(CH₃)₃. Quality Level: 100. Assay: 99%. refractive index: n20/D 1.427 (lit.). bp: 136-137 . °C (lit.). mp: 21-24 . °C (lit.). density: 0.752 . g/mL . at 25 . °C (lit.). storage temp.: 2-8°C. SMILES string: C[Si](C)(C)C#C[Si](C)(C)C. InChI: 1S/C8H18Si2/c1-9(2,3)7-8-10(4,5)6/h1-6H3. InChI key: ZDWYFWIBTZJGOR-UHFFFAOYSA-N. Pictograms: GHS02,GHS07. Signal Word: Danger. Hazard Statements: H225 - H315 - H319 - H335. Precautionary Statements: P210 - P233 - P240 - P241 - P303 + P361 + P353 - P305 + P351 + P338. Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3. Target Organs: Respiratory system. Storage Class Code: 3 - Flammable liquids. WGK: WGK 3. Flash Point(F): 35.6 °F - closed cup. Flash Point(C): 2 °C - closed cup. Personal Protective Equipment: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter.