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 1201923-48-9 as follows. Safety of (S)-tert-Butyl (1-(1,3-dioxoisoindolin-2-yl)-3-(3-fluorophenyl)propan-2-yl)carbamate
Step B 2-[(2S)-2-amino-3-(3-fluorophenyl)propyl]-1H-isoindole-1,3(2H)-dione [1.0]-hydrogen chloride To a solution of tert-butyl[(1S)-1-(3-fluorobenzyl)-2-hydroxyethyl]carbamate (9.40 g, 34.9 mmol), triphenylphosphine (9.15 g, 34.9 mmol), and phthalimide (5.14 g, 34.9 mmol) in tetrahydrofuran (100 mL, 1000 mmol) at room temperature was added diethyl azodicarboxylate (17.9 mL, 45.4 mmol). The reaction was stirred at room temperature for 2 hr and then concentrated under reduced pressure. The residue was purified by combi-flash chromatography eluted with EtOAc/hexane (0-40%) to give the desired intermediate. LCMS found: 399.0 (M+1). To the solution of the purified intermediate in methanol (20 mL, 400 mmol) was added 4.0 M hydrogen chloride in dioxane (30 mL, 100 mmol). The mixture was stirred at room temperature for 2 h and then concentrated under reduced pressure to give 3.1 g (26% total yield for the two steps) of the final product, 2-[(2S)-2-amino-3-(3-fluorophenyl)propyl]-1H-isoindole-1,3(2H)-dione [1.0]-Hydrogen chloride, as white solid. LC/MS found: 299.0 (M+H)+.
According to the analysis of related databases, 1201923-48-9, the application of this compound in the production field has become more and more popular.
Reference:
Patent; Incyte Corporation; Huang, Taisheng; Feng, Hao; Kong, Lingquan; Wang, Anlai; Ye, Hai Fen; US2013/96144; (2013); A1;,
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