33703-64-9

Upstream product

• 33703-61-6 3-(4-Nitro-phenyl)-cyclobut-3-ene-1,2-dione 
• 40923-93-1 tetraethoxyethene 
• 58784-38-6 4-nitrophenylketene 
• 31876-38-7 semisquaric acid 
• 100-05-0 4-nitrobenzenediazonium chloride 
• 104-03-0 4-nitrobenzeneacetic acid 
• 50434-36-1 4-nitrophenylacetyl chloride 
• 937-31-5 (4-Nitrophenyl)acetylene 
• 33703-59-2 1-(4-Chloro-3,3,4-trifluoro-cyclobut-1-enyl)-4-nitro-benzene 

Downstream Products

• 107885-39-2 3-(4-(N,N-dimethylamino)phenyl)-4-hydroxycyclobut-3-ene-1,2-dione 

Relevant academic research and scientific papers

Squaraine chemistry. A new approach to symmetrical and unsymmetrical photoconductive squaraines. Characterization and solid state properties of these materials

A new approach to 1-(p-dimethylaminophenyl)-2-hydroxycyclobutene-3,4-dione (4), a precursor for the synthesis of symmetrical and unsymmetrical photoconductive squaraines, is described.In situ generation of p-nitrophenyl ketene, by the reaction of p-nitrop

Oxocarbons and Related Compounds; Part 15. Meerwein-Arylation of Semisquaric Acid and Semisquaric Amides. A General Method for the Preparation of 3-Aryl-4-hydroxy- and 3-Amino-4-aryl-3-cyclobutene-1,2-diones.

Meerwein-arylation of semisquaric acid (1) and semisquaric amides 4 has been found to afford general routes to 3-aryl-4-hydroxy-3-cyclobutene-1,2-diones 3 and 3-amino-4-aryl-3-cyclobutene-1,2-diones 5 respectively.