4-[(2,2-Dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)methyl]benzonitrile → HCID 21110168, compound

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Reaction Steps

4-[(2,2-Dimethyl-4,6-dioxo-1,3-dioxan-5-ylidene)methyl]benzonitrile (Example 18A; 200 mg, 0.77 mmol) and ethyl (2E)-3-{[3-(trifluoromethyl)phenyl]amino}-2-butenoate (212.4 mg, 0.77 mmol) are dissolved in 1-methoxy-2-(2-methoxyethoxy)ethane (3 ml). The solution is stirred at reflux temperature overnight. The reaction mixture is cooled to room temperature and diluted with water (5 ml). After extraction with toluene (2×5 ml), it is dried with anhydrous sodium sulphate, filtered, and the solvent is removed in vacuo. The product is purified via preparative HPLC.

Provenance & Evidence