Acetic Acid → HCID 86635665, compound

Participants

Reaction Steps

5-(tert-Butoxycarbonyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine-2-carbalde-hyde (440 mg, 1.65 mmol) and piperidine (0.18 ml, 1.81 mmol) were dissolved in THF (10 ml), and NaBH(OAc)3 (523 mg, 2.47 mmol) and glacial acetic acid (94 μl, 1.65 mmol) were added. This mixture was stirred under a nitrogen atmosphere at room temperature for 24 hours. The solvent was then distilled off in vacuo and the residue was taken up in ethyl acetate (25 ml). The solution obtained was washed with NaHCO3 solution and NaCl solution and the combined organic phases were dried with Na2SO4, filtered and concentrated in vacuo. The crude product (580 mg) was employed directly in the next stage without further purification.

Provenance & Evidence