Acetic Acid → HCID 87185039, compound

Participants

Reaction Steps

To a stirred suspension of 2-chloro-4-morpholin-4-yl-thieno[3,2-d]pyrimidine-6-carbaldehyde (1.0 g; 3.5 mmol), 4-N-Boc-4-N-methylaminopiperidine (1.0 g; 4.7 mmol) and AcOH (0.2 mL) in 1,2-dichloroethane (25 mL) was added NaB(OAc)3H (1.0 g; 4.7 mmol). The reaction mixture was stirred at RT for 5 h upon which time it was quenched with saturated NaHCO3 solution (30 mL), diluted with H2O (50 mL) and extracted with EtOAc (200 mL). The organic layer was dried (Na2SO4) and concentrated to a yellow foam (1.84 g). This foam was dissolved in CH2Cl2 (20 mL) and treated with TFA (10 mL) at RT overnight (17 h). Volatiles were removed in vacuo, the residue was taken up in 2M HCl (30 mL) and washed with CH2Cl2 (40 mL). The aqueous layer was basified with saturated Na2CO3 solution, extracted into CH2Cl2, the organic layer separated (hydrophobic frit) and solvent evaporated to give the title compound as a pale yellow solid (1.18 g; 88%).

Provenance & Evidence