Acetic Acid → HCID 58233865, compound

Participants

Reaction Steps

To a solution of 2-chloro-4-morpholinothieno[3,2-d]pyrimidine-6-carbaldehyde (1.3 g, 4.6 mmol) in 1,2-dichloroethane (45 mL) was added 1-(2-hydroxyethyl)piperazine (0.8 mL, 6.4 mmol) and AcOH (260 μL, 4.6 mmol). After stirring 10 min at room temperature, Na(OAc)3BH (1.2 g, 5.5 mmol) was added and the resulting mixture stirred overnight. The reaction was quenched by the addition of saturated aqueous NaHCO3 and the organic layer was separated. The aqueous layer was extracted with CH2Cl2 and the combined organics were dried over Na2SO4, filtered, and concentrated in vacuo. A portion (0.4 mmol) of the crude intermediate was coupled using General Procedure A with 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-2-amine to provide 157 after reverse phase HPLC purification (21 mg). MS (Q1) 456 (M)+.

Provenance & Evidence