644964-54-5

Basic information

• Product Name: 1,1'-Biphenyl, 4-ethoxy-4'-methoxy-
• CAS NO: 644964-54-5
• Molecular Formula: C15H16O2
• Molecular Weight: 228.291
• Mol File: 644964-54-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 1,1'-Biphenyl, 4-ethoxy-4'-methoxy-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1'-Biphenyl, 4-ethoxy-4'-methoxy-(644964-54-5)
• EPA Substance Registry System: 1,1'-Biphenyl, 4-ethoxy-4'-methoxy-(644964-54-5)

Safety Data

• Hazardous Substances Data: 644964-54-5(Hazardous Substances Data)

Upstream product

• 699-08-1 1-ethoxy-4-iodobenzene 
• 5720-07-0 4-methoxyphenylboronic acid 

Relevant articles and documents

Suzuki–Miyaura cross-coupling reaction assisted by palladium nanoparticles-decorated zeolite 13X nanocomposite: a greener approach

Heterogeneous catalysts govern the field of catalysis due to their easy separation from a reaction mixture, reusability, and prevention of agglomeration, making them more efficient catalysts than homogeneous catalysts. Herein, we report the eco-friendly synthesis of a novel heterogeneous catalyst, viz. palladium nanoparticles (Pd NPs) decorated over zeolite 13X nanocomposite using dried fruits of Terminalia chebula Retz. as the reducing and stabilizing agent and its performance as a promising catalyst for the Suzuki–Miyaura coupling reactions. The particle size, crystallinity, morphology, and textural properties of the catalyst were identified using Fourier transform-infrared spectroscopy (FTIR), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HR-TEM), thermal gravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS), and Brunauer–Emmett–Teller (BET) analysis which confirmed the presence of palladium nanoparticles on the surface of zeolite 13X. The FESEM images revealed the presence of spherical-shaped Pd NPs over the cubical particles of zeolite 13X. The average particle size of the palladium nanoparticles was found to be in the range of 6–7?nm and was polycrystalline in nature. From BET analysis, it was inferred that the decoration of Pd NPs decreased the surface area of zeolite 13X (615.5 m2/g to 548.334 m2/g), thus leaving pores unoccupied. This study showed the efficiency of this novel catalyst in the formation of biaryl derivatives using low palladium loadings (0.0012?mol%) giving good to excellent yields (90–99%) within short reaction times (10–225?min) with high TONs (> 79,000) and TOFs (> 21,000). Both electron-donating and electron-withdrawing aryl halides and aryl boronic acids reacted smoothly in the presence of K2CO3 as a base and EtOH/H2O (1:1) as the solvent. Besides, the catalyst could be recycled and reused for 5 consecutive runs with minimal loss of its efficiency. The supremacy of this catalyst could well be exploited in future for various organic transformations. Graphical abstract: [Figure not available: see fulltext.].