Synthetic Route of 71682-97-8, These common heterocyclic compound, 71682-97-8, name is 3-(3,4-Difluorophenyl)-3-oxopropanenitrile, 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.
[0531] A thoroughly mixed mixture of 3-ethyl 4-methyl 2-hydrazinylthiophene-3 ,4- dicarboxylate (0.3 g, 1.228 mmol, 1 eq) and 3-(3,4-difluorophenyl)-3-oxopropanenitrile (0.222 g, 1.228 mmol, 1 eq) in an open vial was stirred neat at 130 °C for 1.5 h. The melted liquid becomes thick solid which is triturated in DCM/MeOH. The crude product was purified on flash system using a 24 g silica column eluting with 1-10 percent methanol in DCM over 12 column volumes. The pure fraction was pooled and concentrated to get 0.49 g (Yield = 84 percent) of white solid.
The synthetic route of 71682-97-8 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICES; VANDERBILT UNIVERSITY; MALONEY, David J.; JADHAV, Ajit; BANTUKALLU, Ganesha Rai; BRIMACOMBE, Kyle Ryan; MOTT, Bryan T.; YANG, Shyh Ming; URBAN, Daniel Jason; HU, Xin; SIMEONOV, Anton; KOUZNETSOVA, Jennifer L.; WATERSON, Alex Gregory; SULIKOWSKI, Gary Allen; KIM, Kwangho; CHRISTOV, Plamen; JANA, Somnath; (387 pag.)WO2016/109559; (2016); A2;,
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