91790-32-8

Basic information

• Product Name: BIS(3-BROMOPHENYL)ACETYLENE
• Synonyms: BIS(3-BROMOPHENYL)ACETYLENE
• CAS NO: 91790-32-8
• Molecular Formula: C14H8Br2
• Molecular Weight: 336.03
• Mol File: 91790-32-8.mol
• Article Data: 13

Chemical Properties

• Appearance: /
• CAS DataBase Reference: BIS(3-BROMOPHENYL)ACETYLENE(CAS DataBase Reference)
• NIST Chemistry Reference: BIS(3-BROMOPHENYL)ACETYLENE(91790-32-8)
• EPA Substance Registry System: BIS(3-BROMOPHENYL)ACETYLENE(91790-32-8)

Safety Data

• Hazardous Substances Data: 91790-32-8(Hazardous Substances Data)

Upstream product

• 1066-54-2 trimethylsilylacetylene 
• 75-20-7 calcium carbide 
• 18293-53-3 2-trimethylsilylacetonitrile 
• 591-18-4 1-Bromo-3-iodobenzene 
• 3132-99-8 m-bromobenzoic aldehyde 
• 130891-01-9 1-bromo-3-((phenylsulfonyl)methyl)benzene 
• 66107-31-1 3-bromophenyl trifluoromethanesulfonate 
• 74-86-2 acetylene 
• 766-81-4 3-bromophenylacetylene 
• 823-78-9 meta-bromobenzyl bromide 

Downstream Products

• 1879010-27-1 C₂₆H₃₂B₂O₄ 

Relevant articles and documents

Synthesis of Diarylethynes from Aryldiazonium Salts by Using Calcium Carbide as an Alkyne Source in a Deep Eutectic Solvent

An efficient method for the synthesis of diarylethynes from aryldiazonium salts by using calcium carbide as an alkyne source at room temperature in a deep eutectic solvent is described. The salient features of this protocol are an inexpensive and easy-to-handle alkyne source, a nonvolatile and recyclable solvent, mild conditions, and a simple workup procedure.

Dichotomy of Manganese Catalysis via Organometallic or Radical Mechanism: Stereodivergent Hydrosilylation of Alkynes

Herein, we disclose the first manganese-catalyzed hydrosilylation of alkynes featuring diverse selectivities. The highly selective formation of E-products was achieved by using mononuclear MnBr(CO)5 with the arsenic ligand, AsPh3. Whereas using the dinuclear catalyst Mn2(CO)10 and LPO (dilauroyl peroxide) enabled the reversed generation of Z-products in good to excellent stereo- and regioselectivity. Such a way of controlling the reaction stereoselectivity is unprecedented. Mechanistic experiments revealed the dichotomy of manganese catalysis via organometallic and radical pathways operating in the E- and Z-selective routes, respectively.

Preparation method of diaryl acetylene compounds

The invention relates to preparation of an organic compound, and aims to provide a preparation method of diaryl acetylene compounds. The preparation method includes steps of adding associated tribromomethylarene compound and copper in a reactor to perform deoxidizing treatment; dissolving polyamine in a proper amount of anhydrous and oxygen-free solvent, and then adding to the reactor; performingcoupling reaction at 30-80DEG C for 3-12 hours; separating and purifying to obtain diaryl acetylene compounds. The preparation is gentle in synthesis condition and the reaction has good compatibilityto different functional groups; the raw material associated tribromomethylarene compound is convenient to compound and has different substituent groups and variable structure; by adopting one raw material, high-quality product can be obtained through simple treatment, and the output is high; by adopting two different raw materials, the asymmetrical diaryl acetylene compound can be prepared.