AKOS B024298 synthesis

Yield:-

Reaction Conditions:

with acetic acid in ethanol;Reflux;

Steps:

1-cyclohexyl-3-methyl-1H-pyrazol-5-amine.

General procedure: In a 250 mL RBF, 3-aminobut-2-enenitrile (2.0 g, 0.24 mole) was added to a stirred solution of cyclohexyl hydrazine hydrochloride (4.0 g, 0.026 mole) and acetic acid (0.1 mL) in ethanol (60 mL). The reaction was refluxed for 6 h. Crude was evaporated and loaded on column to elute out product at 40% ethyl acetate in hexane. (1.74 g, 40%)

References:

Sharma, Swagat;Kozek, Krystian A.;Abney, Kristopher K.;Kumar, Sushil;Gautam, Nagsen;Alnouti, Yazen;David Weaver;Hopkins, Corey R. [Bioorganic and Medicinal Chemistry Letters,2019,vol. 29,# 6,p. 791 - 796] Location in patent:supporting information