208986-13-4

Upstream product

• 64473-54-7 4,7-dimethoxyindoline-2,3-dione 
• 327163-76-8 methyl 3,6-dimethoxy-2-nitrobenzoate 

Downstream Products

• 327163-77-9 methyl 2-bromo-3,6-dimethoxybenzoate 
• 327163-83-7 methyl 3,6-dimethoxy-2-(dimethoxymethyl)-4-(2-propenyl)benzoate 
• 327163-84-8 [2-(dimethoxymethyl)-3,6-dimethoxy-4-(2-propenyl)phenyl]methanol 
• 327163-82-6 1-bromo-2-(dimethoxymethyl)-3,6-dimethoxy-4-(2-propenyl)benzene 
• 327163-80-4 2-bromo-6-hydroxy-3-methoxy-5-(2-propenyl)benzaldehyde 
• 327163-81-5 2-bromo-3,6-dimethoxy-5-(2-propenyl)benzaldehyde 
• 327163-79-1 2-bromo-3-methoxy-6-(2-propenyloxy)benzaldehyde 
• 327164-05-6 (2-bromo-3,6-dimethoxyphenyl)methanol 
• 327163-78-0 2-bromo-6-hydroxy-3-methoxybenzaldehyde 
• 85432-87-7 2-bromo-3,6-dimethoxybenzaldehyde 
• 214476-68-3 4-chloro-5,8-dimethoxy-quinoline-3-carbonitrile 
• 71083-78-8 5,8-dimethoxy-3-cyano-4-quinolone 

Relevant academic research and scientific papers

Preparation of 3-Ethyloxindole-4,7-quinone

The preparation of 3-ethyloxindole-4,7-quinone 10 from 4,7-dimethoxyisatin 1 in four steps is described.

Synthesis of (+/-)-puraquinonic acid: an inducer of cell differentiation.

Puraquinonic acid (1) was synthesized from 2,5-dimethoxybenzoic acid by way of isochroman 2 and the indanone derivative 3, a Nazarov cyclization being used to construct the five-membered ring.