80522-59-4

Upstream product

• 520-03-6 N-phenylphthalimide 
• 75-77-4 chloro-trimethyl-silane 

Downstream Products

• 80522-64-1 2-(3-Oxo-2-phenyl-1-trimethylsilanyloxy-2,3-dihydro-1H-isoindol-1-yl)-1,4-diphenyl-butane-1,4-dione 
• 80522-65-2 2-(2-Methyl-3-oxo-1-trimethylsilanyloxy-2,3-dihydro-1H-isoindol-1-yl)-1,4-diphenyl-butane-1,4-dione 
• 113629-82-6 2,3-bis-(methoxycarbonyl)-1,4-naphthoquinone-1-phenylimine 
• 80522-63-0 dibenzoyl ethene 
• 80522-62-9 4-Hydroxy-2-phenyl-9-phenylamino-benzo[f]isoindole-1,3-dione 
• 80522-61-8 2-Phenyl-4-phenylamino-9-trimethylsilanyloxy-benzo[f]isoindole-1,3-dione 

Relevant academic research and scientific papers

Preparation of naphthoquinone imines as NIR dyes

N-Arylphthalimides can be converted to isoindoles by a two electron reduction and silylation. Cycloaddition with acetylenic dienophiles leads to naphthoquinonemonoimines, which show absorption maxima in the NIR region up to 800 nm.

DARSTELLUNG UND REAKTIONEN VON 1,3-BIS-TRIMETHYLSILYLOXY-ISOBENZOFURANEN UND -ISOINDOLEN

1,3-Bis-trimethylsilyloxy substituted isobenzofurane (isolated as dimer 3) and isoindoles (isolated as addition products with maleic imide and dibenzoyl ethene) could be prepared by the electrochemical reduction of substituted phthalic anhydrides and phthalic imides in the presence of chlorotrimethylsilane.