155587-73-8

Upstream product

• 141-82-2 malonic acid 
• 128618-91-7 3-Benzyloxy-4-nitro-benzaldehyde 

Downstream Products

• 155587-74-9 5-(Benzyloxy)-3-chloro-6-nitrobenzothiophen-2-carbonsaeure-methylester 
• 155587-76-1 5-(Benzyloxy)-3-chlorothieno<2,3-f>chinolin-2,7,9-tricarbonsaeure-trimethylester 
• 155587-75-0 6-Amino-5-(benzyloxy)-3-chlorobenzothiophen-2-carbonsaeure-methylester 
• 155587-82-9 6-Amino-5-hydroxybenzothiophen-2-carbonsaeure-methylester 

Relevant academic research and scientific papers

Synthesis and characterization of the furo and thieno analogues of the triester of PQQ

We report here the synthesis and properties of the furo and thieno analogues of 4,5-dihydro-4,5-dioxo-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylic acid (=PQQ), i.e. the furo- and thieno[2,3-f]quinoline-4,5-quinone (FQQ and TQQ, resp.) derivatives B and C, obtained as triesters. The triester of PQQ derivative A is much more stable than the triesters of B or C, and only the triester of A shows strong activity in nonenzymatic catalytic oxidations.