2-[(1E)-3-methoxyprop-1-en-1-yl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane → HCID 86618433, compound

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Reaction Steps

2-Chloro-6-iodo-4-morpholinothieno[3,2-d]pyrimidine 19 (150 mg), 85 mg of (E)-2-(3-methoxy-1-propen-1-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane and 14 mg of bis(triphenylphosphine)palladium(II) dichloride in 1 mL of 1M Na2CO3 aqueous solution and 1 mL of acetonitrile was heated to 100° C. in a sealed microwave reactor for 10 min. The reaction mixture was evaporated. The crude product was purified by flash chromatography eluting with 5-50% EtOAc/hexane to yield 2-chloro-6-((E)-3-methoxyprop-1-enyl)-4-morpholinothieno[3,2-d]pyrimidine (87 mg, 68%). 2-Chloro-6-((E)-3-methoxyprop-1-enyl)-4-morpholinothieno[3,2-d]pyrimidine (40 mg) was coupled to 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indazole 7 via General Procedure A to yield 29.1 mg of 334. MS (Q1) 408.1 (M)+

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