Application of 874-97-5, These common heterocyclic compound, 874-97-5, name is 3-Cyanobenzyl alcohol, 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.
3-[(5-Amino-2H-pyrazol-3-yl)oxymethyl]benzonitrile, used as starting material, was prepared as follows: a) 3-Amino-5-hydroxypyrazole (2 g, 20.18 mmol, 1 eq) and triphenylphosphine (6.36 g, 24.22 mmol, 1.2 eq) were stirred in DCM (20 ml) for 30 mins. After this time, DIAD (4.77 ml, 24.22 mmol, 1.2 eq) was slowly added, keeping the temp below 20 C. with a water bath, and the resulting mixture stirred for a further 45 mins. A solution of 3-cyanobenzyl alcohol (3.23 g, 24.22 mmol, 1.2 eq) in DCM (10 ml) was added slowly and the reaction left to stir at RT for 24 hours. After this time the solid was filtered off and the solution extracted with 2M HCl solution (3×30 ml). The aqueous layer was back-washed with diethyl ether (2×30 ml), then basified to pH 9 using ammonium hydroxide, cooling the mixture to avoid a strong exotherm. The solution was extracted with DCM (3×30 ml) and the organic fractions combined, dried over magnesium sulphate and concentrated to give 3-[(5-amino-2H-pyrazol-3-yl)oxymethyl]benzonitrile as a colourless gum (321 mg, 7%). MS: m/z 215 (MH+)
Statistics shows that 3-Cyanobenzyl alcohol is playing an increasingly important role. we look forward to future research findings about 874-97-5.
Reference:
Patent; ASTRAZENECA AB; US2008/4302; (2008); A1;,
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts