Brofoxine → 6-(3-chloro-4-fluorophenyl)-4,4-dimethyl-1H-benzo[d][1,3]oxazin-2(4H)-one

HRID 1258109Notes

Reaction equation

Br[C:2]1[CH:14]=[CH:13][C:5]2[NH:6][C:7](=[O:12])[O:8][C:9]([CH3:11])([CH3:10])[C:4]=2[CH:3]=1.Br[C:16]1[CH:21]=[CH:20][C:19]([F:22])=[C:18]([Cl:23])[CH:17]=1>>[Cl:23][C:18]1[CH:17]=[C:16]([C:2]2[CH:14]=[CH:13][C:5]3[NH:6][C:7](=[O:12])[O:8][C:9]([CH3:11])([CH3:10])[C:4]=3[CH:3]=2)[CH:21]=[CH:20][C:19]=1[F:22]

Participants

Reactant 2

HCID 30630Brofoxine

HCID 35430654-Bromo-2-chloro-1-fluorobenzene

Product 1

HCID 99046106-(3-chloro-4-fluorophenyl)-4,4-dimethyl-1H-benzo[d][1,3]oxazin-2(4H)-one

Procedure

6-(3-Chloro-4-fluoro-phenyl)-4,4-dimethyl-1,4-dihydro-benzo[d][1,3]oxazin-2-one was prepared, from 6-bromo-4,4-dimethyl-1,4-dihydro-benzo[d][1,3]oxazin-2-one and 1-bromo-3-chloro-4-fluorobenzene according to Procedure A, as a white solid: mp 211-212° C.; 1H-NMR (DMSO-d6) δ 10.4 (s, 1H), 7.92 (dd, 1H, J=7.13, 2.19 Hz), 7.71-7.66 (m, 1H), 7.60-7.57 (m, 2H), 7.49 (t, 1H, J=8.95 Hz), 6.96 (d, 1H, J=8.01 Hz), 1.67 (s, 6H); MS (EI) m/z 305 ([M+H]+, 20%); Anal. Calcd. For C16H13ClFNO2: C, 62.86; H, 4.29; N, 4.58. Found: C, 62.52; H, 4.45; N, 4.42.

Sources & evidence

ORD record: ord-78eb22faeff9464395b15f53f3eeeada
Source dataset: uspto-grants-2013_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08466146B2

Reaction notes

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