263567

1,4-Bis(trimethylsilyl)butadiyne

98%, stable crystalline form of butadiyne

• Synonym(s): 1,4-Bis(trimethylsilyl)-1,3-butadiyne, BTMSBD
• Linear Formula: (CH₃)₃SiC≡CC≡CSi(CH₃)₃
• CAS Number: 4526-07-2
• Molecular Weight: 194.42
• Beilstein: 1758268
• MDL number: MFCD00009839
• UNSPSC Code: 12352100
• PubChem Substance ID: 24855983
• NACRES: NA.22

Properties

• Assay: 98%
• form: solid
• refractive index: n20/D 1.384 (lit.)
• mp: 111-113 °C (lit.)
• density: 0.974 g/mL at 20 °C (lit.)
• storage temp.: 2-8°C
• SMILES string: C[Si](C)(C)C#CC#C[Si](C)(C)C
• InChI: 1S/C10H18Si2/c1-11(2,3)9-7-8-10-12(4,5)6/h1-6H3
• InChI key: LBNVCJHJRYJVPK-UHFFFAOYSA-N

Description

Application

1,4-Bis(trimethylsilyl)butadiyne can be used as a reagent to prepare:

• 1,1,3,4-Tetrasilyl-substituted 1,3-butadienes or 1,1,3,4-tetrasilyl-substituted 1,2-butadienes by hydrosilylation reaction using various hydridosilanes and catalysts.
• Glycosylated oligo(ethynylene)s using the Negishi reaction.
• (±) Falcarinol, a polyacetylene class of fatty alcohol.

Safety Information

• Pictograms: GHS02
• Signal Word: Danger
• Hazard Statements: H228
• Precautionary Statements: P210
• Hazard Classifications: Flam. Sol. 1
• Storage Class Code: 4.1B - Flammable solid hazardous materials
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves