Cesium carbonate → N-(5-(4-methylpiperazin-1-yl)piridin-2-yl)-4-(3-nitrophenoxy)thieno[3,2-d]pyrimidin-2-amine

Participants

Reaction Steps

0.6 g (1.94 mmol) of the compound obtained in Step 3 of Example 1 and 0.75 g (3.88 mmol) of 5-(4-methylpiperazin-1-yl)piridin-2-amine were dissolved in 8 ml of 1,4-dioxane, and 178 mg (0.2 mmol) of tris(dibenzylideneacetone)dipalladium(O) and 122 mg (0.2 mmol) of 2,2′-bis(diphenylphosphino)-1,1′-binaphthy were added thereto, and stirred for 5 minutes at room temperature. 1.27 g (3.88 mmol) of cesium carbonate was added thereto, and stirred for 3 hours at 100° C. Upon the completion of the reaction, the resulting mixture was cooled to room temperature and filtered over a short bed of Celite filter, and diluted with dichloromethane and washed with water. The organic layer was separated, dried over anhydrous Na2SO4, and filtered and distilled under a reduced pressure. The resulting residue was separated by column chromatography (dichloromethane:methanol (20:1, v/v)) to obtain 630 mg of the title compound (yield: 70%).

Provenance & Evidence