36978-41-3

Uses

2,3,3',4'-Biphenyltetracarboxylic dianhydride (α-BPDA) is a chemical compound that belongs to the class of tetracarboxylic dianhydrides. It is also known by its chemical formula C16H6O6. This compound has been studied for its potential use in various applications such as in the field of organic electronics, as well as in medicinal chemistry for its potential therapeutic properties. 2,3,3',4'-Biphenyltetracarboxylic dianhydride be used for the preparation of a polyimide material.

Preparation

The preparation of 2,3,3',4'-biphenyl tetracarboxylic dianhydride is as follows:In a 1000 ml three-necked flask, 18.3 g (0.1 mol) of 4-chlorophthalic anhydride and 18.3 g (0.1 mol) were added 3-chlorophthalic anhydride, 300 g of anisole as solvent, 0.13 g (0.001 mol) of nickel chloride as a catalyst, 0.198 g (0.001 mol) of C-1 as a catalyst ligand, and 0.03 g (0.0003 mol) of sodium bromide as a catalyst Auxiliary, 13 g (0.2 mol) of zinc powder was used as a reducing agent, and the reaction was stirred at 30 ° C for 8 hours under a nitrogen atmosphere. The reaction solution was filtered to remove insoluble solids in the reaction liquid. 300 g of methanol was added to the filtration mother liquor, and the product was precipitated, filtered, and dried to obtain 25.8 g of the product 2,3,3',4'-biphenyltetracarboxylic dianhydride, yield 87.7%.