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187437

Sigma-Aldrich

Bis(trimethylsilyl)acetylene

99%

Synonyme(s) :

BTMSA

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About This Item

Formule linéaire :
(CH3)3SiC≡CSi(CH3)3
Numéro CAS:
14630-40-1
Poids moléculaire :
170.40
Numéro Beilstein :
906870
Numéro CE :
238-671-9
Numéro MDL:
MFCD00008276
Code UNSPSC :
12352100
ID de substance PubChem :
24851275
Nomenclature NACRES :
NA.22

Niveau de qualité

100

Pureté

99%

Indice de réfraction

n20/D 1.427 (lit.)

Point d'ébullition

136-137 °C (lit.)

Pf

21-24 °C (lit.)

Densité

0.752 g/mL at 25 °C (lit.)

Température de stockage

2-8°C

Chaîne SMILES 

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

Clé InChI

ZDWYFWIBTZJGOR-UHFFFAOYSA-N

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Catégories apparentées

Description générale

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.

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).

Pictogrammes

FlameExclamation mark
GHS02,GHS07

Mention d'avertissement

Danger

Mentions de danger

H225,H315,H319,H335

Classification des risques

Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - STOT SE 3

Organes cibles

Respiratory system

Code de la classe de stockage

3 - Flammable liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

35.6 °F - closed cup

Point d'éclair (°C)

2 °C - closed cup

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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Certificats d'analyse (COA)

Lot/Batch Number
MKCQ8929
MKCN1903
MKCL0605
MKCK0428
MKCG7825

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Consulter la Bibliothèque de documents

Titanium-catalyzed cycloaddition-cycloreversion cascade in the reaction of norbornadiene with bis (trimethylsilyl) acetylene.
Mach K, et al.
Organometallics, 5(6), 1215-1219 (1986)
Bis (trimethylsilyl) acetylene.
Bruckmann J and Kruger C.
Acta Crystallographica Section B, Structural Science, Crystal Engineering and Materials, 53(12), 1845-1846 (1997)
Akinobu Horita et al.
Organic letters, 10(9), 1751-1754 (2008-04-10)
The addition of bis(trimethylsilyl)acetylene to diarylacetylenes proceeds efficiently and selectively in a formal anti fashion in the presence of [Rh(OH)(cod)]2/bisphosphine and phenol as catalyst and activator, respectively, accompanied by cleavage of one of the C-Si bonds to produce the corresponding
Scott E Denmark et al.
Journal of the American Chemical Society, 124(51), 15196-15197 (2002-12-19)
The first, total synthesis of (+)-brasilenyne (1) has been achieved in 19 steps from l-(S)-malic acid. The key elements of this approach are a highly diastereoselective ring-opening of a 1,3-dioxolanone with bis(trimethylsilyl)acetylene) promoted by TiCl4 to set a propargylic stereocenter
Tetrahedron Letters, 35, 417-417 (1994)
Afficher tous les articles scientifiques apparentés

Articles

Diels–Alder Reaction

The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.

Diels–Alder Reaction

The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.

Diels–Alder Reaction

The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.

Diels–Alder Reaction

The Diels–Alder reaction is the reaction between a conjugated diene and an alkene (dienophile) to form unsaturated six-membered rings. It is also referred to as a cycloaddition.

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