Practical synthesis of methyl (E)-2-(3-(3-(2-(7-chloro-2-quinolinyl)ethenyl)phenyl)-3-oxopropyl)benzoate, a key intermediate of Montelukast

Add time:08/30/2019    Source:sciencedirect.com

A novel and practical synthetic route is presented for the preparation of methyl-(E)-2-(3-(3-(2-(7-chloro-2-quinolinyl)ethenyl)phenyl)-3-oxopropyl)benzoate, the key intermediate of Montelukast, a leukotriene antagonist. The main diarylpropane framework was prepared via a polarity conversation reaction resulting in an acyl anion equivalent followed by a nucleophilic substitution reaction. The overall yield of this approach was 61%. This method is simple for operation and suitable for industrial production.

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