4-(3-Chloro 4-fluoro-phenylamino)-5,7-dihydro-pyrrolo[2,3-d]pyrimidin-6-one → 4-(3-Chloro-4-fluoro-phenylamino)-5-{1-[5-(morpholine-4-carbonyl)-thiophen-2-yl]-methylidene}-5,7-dihydro-pyrrolo[2,3-d]pyrimidin-6-one

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The mixture of 4-(3-chloro-4-fluoro-phenylamino)-5,7-dihydro-pyrrolo[2,3-d]pyrimidin-6-one (90 mg, 0.32 mmol), 5-(morpholine-4-carbonyl)-thiophene-2-carbaldehyde (82 mg, 0.36 mmol), and triethylamine (2 drops) in ethanol (3 mL) was heated at 90° C. oil bath for 2 hours, and cooled to room temperature. The solvent was evaporated and the residue was purified on a silica gel column eluting with methylene chloride-methanol (98:2 and 95:5) to provide pure 4-(3-chloro-4-fluoro-phenylamino)-5-{ 1-[5-(morpholine-4-carbonyl)-thiophen-2-yl]-methylidene-}-5,7-dihydro-pyrrolo[2,3-d]pyrimidin-6-one (41 mg, 28%). MS 486 [M++1].

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