2-Amino-4-(benzyloxy)benzamide → HCID 66610642, compound

HRID 625774Notes

Reaction equation

[NH2:1][C:2]1[CH:10]=[C:9]([O:11][CH2:12][C:13]2[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=2)[CH:8]=[CH:7][C:3]=1[C:4]([NH2:6])=[O:5].[F:19][C:20]1[CH:25]=[CH:24][C:23]([CH:26]2[O:30]C(=O)[O:28][C:27]2=O)=[CH:22][CH:21]=1>C1COCC1>[CH2:12]([O:11][C:9]1[CH:8]=[CH:7][C:3]([C:4]([NH2:6])=[O:5])=[C:2]([NH:1][C:27](=[O:28])[CH:26]([C:23]2[CH:24]=[CH:25][C:20]([F:19])=[CH:21][CH:22]=2)[OH:30])[CH:10]=1)[C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1

Participants

Conditions

Temperature: 63 °C

Procedure

To a solution of 2-amino-4-(benzyloxy)benzamide (4.0 g, 16.5 mmol) in THF (60 mL) was added a solution of 5-(4-fluorophenyl)-1,3-dioxolane-2,4-dione (3.65 g, 18.6 mmol) from Example 16 in THF (20 mL) portionwise at rt. After heating to 63° C. for 18 h, the solution was cooled and concentrated. After addition of H2O, the solution was extracted twice with DCM. The combined organic phases were washed with brine and dried over sodium sulfate. Chromatography on silica gel eluting with 10 to 80% EtOAc/DCM afforded 4-(benzyloxy)-2-(2-(4-fluorophenyl)-2-hydroxyacetamido)benzamide as a foamy solid (4.1 g, 64%). 1H NMR (300 MHz, DMSO-d6) δ ppm 5.06 (m, 1H), 5.12 (s, 2H) 6.68-6.74 (m, 1H) 7.14-7.20 (m, 2H) 7.32-7.51 (m, 6H) 7.77 (d, J=8.85 Hz, 1H) 8.05 (br. s., 1H) 8.30 (d, J=2.64 Hz, 1H) 12.73 (s, 1H). LC-MS (ESI) m/z 392 (M−2).

Workup

temperaturethe solution was cooled
concentrationconcentrated
additionAfter addition of H2O
extractionthe solution was extracted twice with DCM
washThe combined organic phases were washed with brine
dry with materialdried over sodium sulfate

Sources & evidence

ORD record: ord-95273d2098394866812ae15a834514ec
Source dataset: uspto-grants-2016_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09308207B2

Reaction notes

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