Trimethyl orthoformate → (s)-1-(4-((2-(2-Aminopyrimidin-5-yl)-4-(3-methylmorpholino)thieno[3,2-d]pyrimidin-6-yl)methyl)-1,4-diazepan-1-yl)ethanone

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Reaction Steps

Following General Procedure D, (S)-2-chloro-4-(3-methylmorpholino)thieno[3,2-d]pyrimidine-6-carbaldehyde (110 mg, 0.37 mmol), HOAc (22 mg), NaBH(OAc)3 (101 mg, 0.48 mmol), N-acetylhomopiperazine (63 mg, 0.44 mmol), 1,2-dichloroethane (1.0 mL), trimethylorthoformate were reacted at room temperature for 2 h. The crude product was used in the next step without purification. MS (Q1) 424 (M)+. Following general procedure A: crude product from above, 2-aminopyrimidine-5-boronic acid pinacol ester (106 mg, 0.48 mmol), Pd(PPh3)4 (30 mg), MeCN (1.5 mL) and 1M KOAc in H2O (1.5 mL) were irradiated at 140° C. for 30 min. The reaction mixture was diluted with CH2Cl2, and filtered. The filtrate was concentrated to give crude 425 which was purified by reverse phase HPLC (68 mg). MS (Q1) 483 (M)+

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