Triethylamine → (7-Chlorospiro[benzo[b]pyrrolo[1,2-d][1,4]oxazine-4,4'-piperidine]-1'-yl)(2-fluoro-5-methoxyphenyl)methanone

Participants

Reaction Steps

7-Chlorospiro[benzo[b]pyrrolo[1,2-d][1,4]oxazine-4,4′-piperidine] (62 mg, 0.20 mmol), 2-fluoro-5-methoxybenzoic acid (34 mg, 0.20 mmol), EDCI (38 mg, 0.20 mmol), and Et3N (56 μL, 0.40 mmol) were combined in DCM (1 mL) and the mixture was stirred for 6 h. The mixture was diluted with DCM and was washed with 1N HCl, sat. aq. sodium bicarbonate and brine. The organics were dried over sodium sulfate and were evaporated. The crude material was purified by silica gel chromatography eluting with 0-40% ethyl acetate in hexanes to provide (7-chlorospiro[benzo[b]pyrrolo[1,2-d][1,4]oxazine-4,4′-piperidine]-1′-yl)(2-fluoro-5-methoxyphenyl)methanone. ESI-MS m/z calc. 426.1. found 427.5 (M+1)+. Retention time: 2.12 minutes (3 min run). NMR (400 MHz, CDCl3) δ 7.26 (d, J=8.4 Hz, 1H), 7.13-7.07 (m, 2H), 7.05-6.96 (m, 2H), 6.94-6.85 (m, 2H), 6.33 (t, J=3.2 Hz, 1H), 6.08-5.98 (m, 1H), 4.69 (d, J=13.1 Hz, 1H), 3.80 (s, 3H), 3.63-3.44 (m, 2H), 3.33 (t, J=12.8 Hz, 1H), 2.19 (d, J=13.8 Hz, 1H), 2.09-1.96 (m, 2H), 1.60 (s, 1H).

Provenance & Evidence