These common heterocyclic compound, 6136-93-2, name is 2,2-Diethoxyacetonitrile, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. Recommanded Product: 2,2-Diethoxyacetonitrile
To a vial was added 2,2-diethoxyacetonitrile (XIX) (1.0 g, 7.74 mmol) dissolved MeOH (7.74 mL) followed by addition of MeONa/MeOH (0.18 mL, 0.77 mmol) dropwise. The reaction was stirred at room temperature for 20 h. HOAc (44.3 muL, 0.77 mmol) was added until pH=7-8 (using pH strips). (4-Bromo-3-fluoro-phenyl)methanamine hydrochloride (XX) (1.86 g, 7.74 mmol) was added and stirred at 40 C. for 4 h. The solvent was removed under vacuum. Sulfuric acid (12.6 mL, 232.3 mmol) was added and stirred at 40 C. for 16 h. NH4OH (30.8 mL, 240.0 mmol) was added dropwise at 0 C. The solvent was removed under vacuum and the residue was purified by C18 silica gel (240 g) [0?50% H2O/MeCN (0.1% Formic acid)] to produce 6-bromo-7-fluoro-isoquinolin-3-amine (XXI) (1.33 g, 5.50 mmol, 71.1% yield) as an off-white solid. 1H NMR (499 MHz, DMSO-d6) delta ppm 6.07 (2H, s), 6.61 (1H, s), 7.76 (1H, d, J=9.33 Hz), 8.01 (1H, d, J=6.86 Hz), 8.80 (1H, s); ESIMS found for C9H6BrFN2 m/z 242.9 (81BrM+H).
The synthetic route of 2,2-Diethoxyacetonitrile has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Samumed, LLC; KC, Sunil Kumar; Mak, Chi Ching; Hofilena, Brian Joseph; Mittapalli, Gopi Kumar; Eastman, Brian Walter; Cao, Jianguo; Bollu, Venkataiah; Chiruta, Chandramouli; (149 pag.)US2019/125740; (2019); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts