15517-46-1

Usage

Preparation

Obtained by Fries rearrangement of phenyl terephtha-–late (diester) with aluminium chloride at 185–195° for 25 min.

InChI:InChI=1/C20H14O4/c21-17-9-5-15(6-10-17)19(23)13-1-2-14(4-3-13)20(24)16-7-11-18(22)12-8-16/h1-12,21-22H

Upstream product

• 935-14-8 1,4-diethynylbenzene 
• 108-95-2 phenol 
• 15517-45-0 1,4-phenylenebis[(4-methoxypheny)lmethanone] 
• 100-66-3 methoxybenzene 
• 100-20-9 terephthaloyl chloride 
• 1539-04-4 diphenyl terephthalate 

Downstream Products

• 6315-88-4 1,4-bis-[4-(3-bromo-benzoyloxy)-benzoyl]-benzene 
• 150940-37-7 1,4-bis-(4-acetoxy-benzoyl)-benzene 

Relevant academic research and scientific papers

1. 4 - b (4 - hydroxybenzene acyl) rectifying section polyetherketoneetherketoneketone copolymer preparation method

The invention relates to a 1,4-dis(4-hydroxyl pyrazolyl)benzene and a preparation method of a polyetheretherketone copolymer, which belongs to the high-molecular material field. The method comprises the following steps: selecting nitrobenzene and tetrachloroethanes as solvents, taking aluminium trichloride as a catalyst for a Fries rearrangement reaction to obtain a 1,4-dis(4-hydroxyl pyrazolyl)benzene monomer, then adding 4,4'-difluorobenzophenone and sulfobenzide in a reaction container equipped with a thermometer, protecting under nitrogen, heating to 160-180 DEG C and adding carbonate, heating to 165-190 DEG C and adding a bisphenol monomer, wherein the bisphenol monomer is a mixture of hydroquinone and 1,4-dis(4-hydroxyl pyrazolyl)benzene, performing a program temperature control reaction to obtain a polymer, and processing to obtain the refined polyetheretherketone random polymer.

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

Visible Light Copper Photoredox-Catalyzed Aerobic Oxidative Coupling of Phenols and Terminal Alkynes: Regioselective Synthesis of Functionalized Ketones via C C Triple Bond Cleavage

Direct oxidative coupling of phenols and terminal alkynes was achieved at room temperature by a visible-light-mediated copper-catalyzed photoredox process. This method allows regioselective synthesis of hydroxyl-functionalized aryl and alkyl ketones from simple phenols and phenylacetylene via C C triple bond cleavage. 47 examples were presented. From a synthetic perspective, this protocol offers an efficient synthetic route for the preparation of pharmaceutical drugs, such as pitofenone and fenofibrate.

Production of hydroxy arylophenones

Production of a hydroxy arylophenone by reacting an aromatic carboxylic acid Ar(--CO2 H)p where Ar is an aromatic radical, (--CO2 H) is an aromatic carboxylic acid group, and p is 1 or 2 with an aromatic compound H--Ar'--OH where Ar' is an aromatic radical and --H and --OH are aromatically bound para to each other in a benzenoid ring, in the presence of an alkyl sulphonic acid, particularly methane sulphonic acid, to produce a hydroxy arylophenone of formula Ar(--CO--Ar'--OH)p where the carbonyl and hydroxyl groups are para to each other in the hydroxyl-containing benzenoid ring of Ar'. The production of the hydroxy arylophenone proceeds through the intermediate ester (H--Ar'--O--CO--)p Ar and the production of the hydroxy arylophenone starting from the ester is also claimed.