99861-25-3

Upstream product

• 98954-40-6 2-ethyl-3-methoxyphenol 
• 135-77-3 1,2,4-trimethoxy-benzene 
• 75-03-6 ethyl iodide 
• 64-67-5 diethyl sulfate 
• 703-23-1 2'-hydroxy-6'-methoxyacetophenone 

Downstream Products

• 152532-89-3 3-ethyl-1,2,4-trimethoxy-5-nitrobenzene 
• 152531-77-6 3-ethyl-2,4,5-trimethoxyaniline 
• 152532-12-2 N-(3-Ethyl-2,4,5-trimethoxy-phenyl)-3-oxo-butyramide 
• 138223-31-1 N-(2,2-Dimethoxy-ethyl)-N-(3-ethyl-2,4,5-trimethoxy-benzyl)-4-methyl-benzenesulfonamide 
• 517-82-8 echinochrome A 
• 138223-26-4 3-Ethyl-2,4,5-trimethoxy-benzaldehyde 

Relevant academic research and scientific papers

The chemistry of naphthazarin derivatives 3. Synthesis of the dideoxy analog of islandoquinone

The 7,7'-dideoxy analog of islandoquinone, binaphthazarin of a new structural type, bearing a 2-oxo-2,3-dihydro-1,4-naphthoquinone moiety was synthesized. The carbonyl group at the C(2) atom of this binaphthazarin easily adds water to give the corresponding gem-diol. Comparison of the spectral characteristics of the prepared diol and islandoquinone made it possible to elucidate more precisely the structure of the latter.

Synthesis of 5,6-,5,8- and 7,8-isoquinolinediones from the corresponding isoquinolinols and di-methoxyisoquinolines

5,8-Isoquinolinediones (12, 18, 25), 7,8-isoquinolinediones (14, 19) and 5,6-isoquinolinediones (26) were synthesized by oxidative demethylation of the corresponding dimethoxyisoquinolines with cerium(IV) ammonium nitrate or silver-(II) oxide. 8-Dialkylam