Ethanol → HCID 22663125, compound

Participants

Reaction Steps

70.0 mg of 6,7-dimethoxy-2-methylamino-4-[3-(2-phenyl ethynyl)phenyl]quinazoline obtained in Example 65, 50.0 mg Lindlar catalyst and 50.0 mg triethylamine were suspended in a mixed solvent of 5 ml ethanol and 5 ml tetrahydrofuran. After the atmosphere was replaced with hydrogen, the mixture was stirred for 6 hours at ordinary pressure at room temperature. The reaction solution was filtered, and the filtrate was evaporated. Then, the crude product was purified and separated by silica gel column chromatography (hexane:ethyl acetate=2:1). The product was recrystallized from hexane-isopropanol to give 45.0 mg of the title compound as colorless crystals.

Provenance & Evidence