7267-14-3

Usage

Uses

Used in High Performance Polymers and Polyimides Production:
4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride is used as a key intermediate in the synthesis of high performance polymers and polyimides due to its robust heat and chemical resistance properties, which are essential for creating materials with superior mechanical and thermal stability.
Used in Electronics Industry:
In the electronics industry, 4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride is utilized as a component in the manufacturing of electronic components and printed circuit boards. Its heat resistance and chemical stability contribute to the longevity and reliability of these components under demanding conditions.
Used in Coatings Industry:
4,5-Dichloronaphthalene-1,8-dicarboxylic anhydride is employed as a constituent in high temperature resistant coatings, where its ability to withstand extreme temperatures and resist chemical degradation is crucial for protecting surfaces in harsh environments.
Safety Considerations:

InChI:InChI=1/C24H10Cl4O7/c25-13-5-1-9(21(29)30)17-11(3-7-15(27)19(13)17)23(33)35-24(34)12-4-8-16(28)20-14(26)6-2-10(18(12)20)22(31)32/h1-8H,(H,29,30)(H,31,32)

Upstream product

• 7267-11-0 4,5-dichloro-naphthalene-1,8-dicarboxylic acid 
• 83-32-9 acenaphthene 
• 4208-97-3 5,6-dichloroacenaphthene 

Downstream Products

• 705966-93-4 4-chloro-benzene-1,2,3-tricarboxylic acid 
• 25507-27-1 4,5-Dichlornaphthalsaeure-N-methylimid 

Relevant academic research and scientific papers

Organic synthesis intermediate 4,5-dichloro-1,8-naphthalic anhydride synthesis method

The invention discloses an organic synthesis intermediate 4,5-dichloro-1,8-naphthalic anhydride synthesis method, which comprises: adding 1,8-dihydroxymethyl-4,5-dichloro-6-hydroxynaphthalene and a potassium chloride solution into a reaction container, increasing the temperature of the solution, controlling the stirring speed, adding a 1,3-propanesultone solution, and carrying out a reaction for 90-120 min; and adding ytterbia powder, continuously carrying out the reaction, increasing the temperature, refluxing, adding an oxalic acid solution, adjusting the pH value, reducing the temperature,precipitating the crystal, washing with a 4-chlorobenzotrifluoride solution, washing with a m-bromochlorobenzene solution, re-crystallizing in a beta-chloronaphthalene solution, and dehydrating with adehydrating agent to obtain the finished product 4,5-dichloro-1,8-naphthalic anhydride.

A novel chromatism switcher with double receptors selectively for Ag + in neutral aqueous solution: 4,5-diaminoalkeneamino-N-alkyl-l,8- naphthalimides

Two novel fluorosensors of 4,5-disubstituted-N-alkyl-l,8-naphthalimide derivatives (H1, H2, H3) with double ethylenediamino receptors, double propylenediamino receptors, or one methylpiperazine receptor were synthesized, respectively. Their fluorescence and absorption in the presence or absence of nine metal ions were studied. In the presence of Ag+, H1's absorption moved to long wavelength with color change from yellow-green to red, its quenching and red shift in fluorescence were also remarkable. Similarly, H1's fluorescence was also strongly quenched in the presence of Cu2+. In addition, H1 and H2 show high pH sensitively. There was 139-folds fluorescence enhancement for H1, 22-folds for H2, and 4-folds for H3 when pH was changed from 8 to 3, respectively.