Chloroform → (Z)-3-chloro-N-(3-(2-(4-(4-methylpiperazin-1-yl)phenylamino)thieno[3,2-d]pyrimidine-4-yloxy)phenyl)acrylamide

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Reaction Steps

The compound (50 mg, 0.12 mmol) obtained in Step 5 of Example 1 was dissolved in pyridine (1.5 mL), and cis-3-chloroacrylic acid (18 mg, 0.17 mmol) and N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloric acid salt (44 mg, 0.23 mmol) were added thereto, followed by stirring at room temperature for 1 hour. After the reaction was complete, the reaction mixture was dilluted with a mixed solvent (chloroform:2-propanol=3:1 (volume ratio)) and washed with sat. brine. The organic layer was dried with anhydrous sodium sulfate and then filtered and distilled under a reduced pressure. The residue was separated by column chromatography (dichloromethane: methanol=6:1 (volume ratio)) to obtain the title compound (yield: 15 mg, 24%).

Provenance & Evidence