Trimethyl orthoformate → (s)-5-(4-(3-Methylmorpholino)-6-((4-(methylsulfonyl)piperazin-1-yl)methyl)thieno[3,2-d]pyrimidin-2-yl)pyrimidin-2-amine

Participants

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 (94 mg, 0.44 mmol), 1-methanesulfonyl piperazine (70 mg, 0.43 mmol), 1,2-dichloroethane (1.0 mL), trimethylorthoformate at room temperature for 1 h. The crude product was used in the next step without purification. MS (Q1) 445 (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 424, purified by reverse phase HPLC. (28 mg) MS (Q1) 505 (M).

Provenance & Evidence