18514-76-6, An article , which mentions 18514-76-6, molecular formula is C8H5N3O2. The compound – 5-Nitroquinoxaline played an important role in people’s production and life.
A highly active catalyst for the reductive cyclization of ortho-nitrostyrenes under mild conditions
A mild and efficient method for the palladium-catalyzed reductive cyclization of ortho-nitrostyrenes to afford indoles is reported. Treatment of ortho-nitrostyrenes with 0.1 mol% palladium (II) trifluoroacetate [Pd(TFA) 2] and 0.7 mol% 3,4,7,8-tetramethyl-1,10-phenanthroline (tm-phen) in DMF at 15 psig CO and 80C afforded indoles in good to excellent yields. When the reaction was conducted in toluene, the corresponding N-hydroxyindole was isolated. A mechanism that accounts for the formation of N-hydroxyindole is proposed.
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Reference£º
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N844 | ChemSpider