15517-45-0

Upstream product

• 100-66-3 methoxybenzene 
• 100-20-9 terephthaloyl chloride 
• 99-63-8 benzene-1,3-dicarbonyl dichloride 
• 75-15-0 carbon disulfide 
• 7446-70-0 aluminium trichloride 
• 1539-04-4 diphenyl terephthalate 
• 624-38-4 para-diiodobenzene 
• 100-07-2 4-methoxy-benzoyl chloride 
• 1012-73-3 1,4-bis(trimethylstannyl)benzene 
• 201230-82-2 carbon monoxide 
• 5720-07-0 4-methoxyphenylboronic acid 
• 696-62-8 para-iodoanisole 
• 4612-26-4 1,4-Phenyldiboronic acid 

Downstream Products

• 194936-80-6 1,4-bis((p-methoxyphenyl)hydroxymethyl)benzene 
• 15517-46-1 1,4-phenylenebis((4-hydroxyphenyl)methanone) 
• 874365-13-6 1,4-di-(2-p-methoxyphenyl-6-phenyl-5-ethoxycarbonyl-[2H]-naphtho[2,1-b]pyran-2-yl)-benzene 
• 874365-08-9 1,4-di-(8-bromo-3-p-methoxyphenyl-[3H]-naphtho[2,1-b]pyran-3-yl)-benzene 
• 874365-03-4 1,4-di-(3-p-methoxyphenyl-[3H]-naphtho[2,1-b]pyran-3-yl)-benzene 
• 874365-00-1 1,4-di[1-hydroxy-1-(p-methoxyphenyl)-prop-2-ynyl]benzene 

Relevant academic research and scientific papers

Novel and efficient bridged bis(N-heterocyclic carbene)palladium(II) catalysts for selective carbonylative Suzuki–Miyaura coupling reactions to biaryl ketones and biaryl diketones

Bridged N,N′-substituted bisbenzimidazolium bromide salts (L1, L2, and L3) were synthesized and fully characterized. Reactions of palladium acetate with L1, L2, and L3 afforded corresponding new bridged bis(N-heterocyclic carbene)palladium(II) complexes (C1, C2, and C3) in high yields. The X-ray structure of complex C1 showed that the Pd(II) ion is bonded to the two carbon atoms of the bis(N-heterocyclic carbene) and two bromido ligands are in the cis position, resulting in a distorted square planar geometry. The three Pd(NHC)2Br2 complexes C1, C2, and C3 were evaluated in carbonylative Suzuki–Miyaura coupling reactions of aryl boronic acids with aryl halides and displayed high catalytic activity with low catalyst loading. The coupling reactions of aryl bromides were selective towards the carbonylation product at higher carbon monoxide pressure.

Efficient N-heterocyclic carbene palladium(II) catalysts for carbonylative Suzuki-Miyaura coupling reactions leading to aryl ketones and diketones

New N, N′-substituted imidazolium salts (L1 and L2) and their corresponding diiodopyridinepalladium(II) complexes (C1 and C2) were successfully synthesized and characterized. Reactions of palladium iodide with the newly synthesized N, N′-substituted imidazolium iodides in pyridine afforded the corresponding new palladium-N-heterocyclic carbene pyridine complexes in high yields. The new palladium(II) complex C1 was characterized by single crystal X-ray diffraction analysis. The Pd(II) ion is bonded to the nitrogen atom of the pyridine, the carbon atom of the NHC carbene ligand and two trans iodides resulting in distorted square planar geometry. The two Pd-NHC-Py complexes C1 and C2 displayed higher catalytic activity in the carbonylative Suzuki-Miyaura coupling reactions with much lower catalyst loading as compared to the catalytic systems reported in the literature.

1,4-di(4-hydroxylbenzoyl)benzene monomer preparation method

The invention relates to a high polymer material preparation method, in particular to a 1,4-di(4-hydroxylbenzoyl)benzene monomer preparation method. The method includes: selecting nitrobenzene as a solvent, aluminum trichloride as a catalyst and paraphtha

Steric control in the synthesis of p-benziporphyrins. formation of a doubly n-confused benzihexaphyrin macrocycle

The use of 1,4-phenylene-containing tripyrrane analogs provides a general route to expanded p-benziporphyrins. The course of macrocyclization shows a striking dependence on the steric bulk of meso substituents.

Efficient catalyst-free bi- and triaroylation of aromatic rings in a single step

(Chemical Equation Presented) The exceptional leaving group ability of the trimethylstannyl group in electrophilic aromatic substitutions makes possible the synthesis, in a single step, of bi- and triaroylarenes through the catalyst-free, regioselective reaction of bi- and tristannylarenes with different aroyl halides in o-dichlorobenzene as solvent. Specific di- and triketones are obtained in good to excellent yields (45-83%).

Pd-P(t-Bu)3-catalyzed consecutive cross-coupling of p-phenylenedizinc compound with two different electrophiles leading to unsymmetrically 1,4-disubstituted benzenes

(Chemical Equation Presented) Pd-P(t-Bu)3 was found to be a chemoselective catalyst for the reaction of p-phenylenedizinc compound with equimolar amounts of carbon electrophiles to afford the single cross-coupling products in good yields, effectively suppressing the formation of double cross-coupling products. The subsequent additions of other electrophiles to the resulting solutions caused the second cross-coupling of the incipient products to take place, achieving a novel and efficient one-pot synthesis of unsymmetrically 1,4-disubstituted benzenes. The origin of the observed high chemoselectivity was speculated.

Synthesis and photochromism of novel phenylene-linked photochromic bispyrans

(Chemical Equation Presented) Phenylene-linked bisnaphthopyrans were synthesized in good yields via the one-pot reaction of bis-propargyl alcohols with naphthols. Temperature-dependent photochromism in 1,4-phenylene-linked bispyrans leads to up to 60 nm bathochromic shift between the colored species formed at room temperature and at -20°C. Better fatigue resistance and higher colorability was observed in 1,4-phenylene-linked bis-[2H]-naphtho[1,2-b] pyrans by comparison to the 1,3-phenylene linked bis-[2H]-naphtho[1,2-b]pyrans.