849681-64-7

Basic information

• Product Name: Diphenylacetylene-4,4'-diboronic acid bis(pinacol) ester, 95%
• Synonyms: Diphenylacetylene-4,4'-diboronic acid bis(pinacol) ester, 95%;4,4,5,5-Tetramethyl-2-(4-{2-[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]ethynyl}phenyl)-1,3,2-;4,4,5,5-Tetramethyl-2-(4-{2-[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]ethynyl}phenyl)-1,3,2-dioxaborolane;1,2-Bis(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)acetylene;4,4′-(Acetylene-1,2-diyl)bis(phenylboronic acid pinacol ester);4,4,5,5-Tetramethyl-2-(4-{2-[4-(tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]ethynyl}phenyl)-1,3;4,4,5,5-tetramethyl-2-[4-[2-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]ethynyl]phenyl]-1,3,2-dioxaborolane
• CAS NO: 849681-64-7
• Molecular Formula: C₂₆H₃₂B₂O₄
• Molecular Weight: 466.18244
• Mol File: 849681-64-7.mol
• Article Data: 2

Chemical Properties

• Melting Point: 275-280°C
• Boiling Point: 536.4±35.0 °C(Predicted)
• Appearance: /
• Density: 1.09±0.1 g/cm3(Predicted)
• CAS DataBase Reference: Diphenylacetylene-4,4'-diboronic acid bis(pinacol) ester, 95%(CAS DataBase Reference)
• NIST Chemistry Reference: Diphenylacetylene-4,4'-diboronic acid bis(pinacol) ester, 95%(849681-64-7)
• EPA Substance Registry System: Diphenylacetylene-4,4'-diboronic acid bis(pinacol) ester, 95%(849681-64-7)

Safety Data

• WGK Germany: 3
• Hazardous Substances Data: 849681-64-7(Hazardous Substances Data)

Usage

Uses

4,4''-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)diphenylacetylene

Upstream product

• 2789-89-1 1,2-bis(4-bromophenyl)acetylene 
• 73183-34-3 bis(pinacol)diborane 

Downstream Products

• 1382249-93-5 (E)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan)-4'-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)stilbene 

Relevant articles and documents

Synthesis of an extended hexagonal molecule as a highly symmetrical ligand

An extended hexagonal molecule that has high symmetry and rigidity was designed and synthesized by a cobalt-catalyzed cyclotrimerization reaction. The ligand possesses six benzoic acids at its periphery, which were connected to a central hexakis(2,5-dodesyloxyphenyl)hexaphenylbenzene core with a maximum intramolecular carboxyl group distance of approximately 3.5 nm.