Lithium Hydroxide → HCID 58551222, compound

Participants

Reaction Steps

(1-Cyano-1′-(4-(isopropylsulfonyl)benzoyl)spiro[benzo[b]pyrrolo[1,2-d][1,4]oxazine-4,4′-piperidine]-7-yl)methyl acetate (16.2 mg, 0.0297 mmol) was treated with 1M LiOH (1 mL), THF (5 mL) and MeOH (1 mL). The mixture was stirred at room temperature over night. The volatiles were removed and the residue was neutralized with 1N HCl. The mixture was extracted with CH2Cl2 (2×). The combined organics were dried over sodium sulfate, filtered and concentrated under reduced pressure to give 7′-(hydroxymethyl)-1-(4-isopropylsulfonylbenzoyl)spiro[piperidine-4,4′-pyrrolo[2,1-c][1,4]benzoxazine]-1′-carbonitrile (11.3 mg, 75%). ESI-MS m/z calc. 505.58. found 506.5 (M+1)+; Retention time 1.49 minutes (3 min run). NMR (400 MHz, DMSO) δ 7.93 (dd, J=8.2, 6.5 Hz, 3H), 7.73 (d, J=8.3 Hz, 2H), 7.32 (d, J=4.0 Hz, 1H), 7.25 (s, 1H), 7.15 (d, J=8.4 Hz, 1H), 6.45 (d, J=4.1 Hz, 1H), 5.39-5.30 (m, 1H), 4.51 (s, 2H), 3.81-3.64 (m, 1H), 3.54-3.42 (m, 2H), 3.41-3.37 (m, 1H), 2.20-2.12 (m, 1H), 2.13-2.03 (m, 1H), 2.01 (t, J=5.9 Hz, 1H), 1.57 (dd, J=12.5, 6.2 Hz, 1H), 1.17 (d, J=6.8 Hz, 6H).

Provenance & Evidence