In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 2973-50-4 as follows. category: nitriles-buliding-blocks
(2) (2-Aminophenyl)acetonitrile (1.34 g) was dissolved in THF (10 mL), and concentrated hydrochloric acid was added, followed by heating under reflux for 2 hours. The solvent was evaporated, and ethanol (5 mL) and diisopropyl ether (15 mL) were added to suspend the concentrated residue. The crystals were recovered by filtration to obtain 2-imino-2,3-dihydro-1H-indole monohydrochloride (1.42 g).1H NMR (DMSO) delta: 12.46 (s,1H) 10.25 (s,1H), 10.00 (s,1H), 7.42-7.11 (m,4H), 4.18 (s,2H)
According to the analysis of related databases, 2973-50-4, the application of this compound in the production field has become more and more popular.
Reference:
Patent; YAMANOUCHI PHARMACEUTICAL CO. LTD.; EP1367058; (2003); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts