Acetic Acid → HCID 22049397, compound

Participants

Reaction Steps

Prepared by Scheme R and Procedure F. A solution of 1-(9-ethyl-9H-carbazol-3-yl)ethanone (22.3 mg, 0.100 mmol) and 1-[3-(4-piperidinyl)phenyl]-2-pyrrolidinone (27.2 mg, 0.100 mmol) in 1,2-dichloroethane (1.00 mL) was treated with sodium triacetoxyborohydride (63.6 mg, 0.300 mmol) and HOAc (5.70 uL, 0.100 mmol). The mixture was stirred overnight at room temperature. The reaction mixture was treated with a saturated aqueous NaHCO3 solution (10 mL). The aqueous layer was extracted with CH2Cl2 (3×10 mL) and the combined organic layers were washed with brine (10 mL), dried over MgSO4 and concentrated in vacuo. The residue was purified by preparative TLC using 5% of NH3 (2.0 M in methanol) in CH2Cl2 to give the desired product 1-(3-{1-[(9-ethyl-9H-carbazol-3-yl)methyl]-4-piperidinyl}phenyl)-2-pyrrolidinone (4.60 mg, 9.43%): 1H NMR (400 MHz, CDCl3) δ 8.04 (d, 1H, J=7.4 Hz), 7.99 (s, 1H), 7.43–7.28 (m, 5H), 6.96 (d, 1H, J=7.4 Hz), 4.31 (q, 2H, J=6.8 Hz), 3.77 (t, 2H, J=7.3 Hz), 3.70 (s, 2H), 3.06 (d, 2H, J=10.6 Hz), 2.56–2.42 (m, 3H), 2.07 (m, 4H), 1.77 (m, 4H), 1.36 (m, 3H) ESMS m/e: 452.5 (M+H)+.

Provenance & Evidence