Acetic Acid → 5-{3-[(4-carbamimidoylphenylamino)-(5-fluoro-8-methoxy-2,3-dihydrobenzo[1,4]dioxin-6-yl)methyl]-5-oxo-4,5-dihydro-[1,2,4]triazol-1-yl}-1H-pyrazole-4-carboxylic acid ethyl ester acetate

HRID 1161531Notes

Reaction equation

[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[N:8][NH:9][C:10]=1[N:11]1[C:15](=[O:16])[NH:14][C:13]([CH:17]([C:31]2[CH:40]=[C:39]([O:41][CH3:42])[C:34]3[O:35][CH2:36][CH2:37][O:38][C:33]=3[C:32]=2[F:43])[NH:18][C:19]2[CH:24]=[CH:23][C:22]([C:25]3[N:29]=C(C)O[N:26]=3)=[CH:21][CH:20]=2)=[N:12]1)=[O:5])[CH3:2].O.C(O)(=O)C>CO.[Fe]>[C:4]([OH:5])(=[O:3])[CH3:6].[CH2:1]([O:3][C:4]([C:6]1[CH:7]=[N:8][NH:9][C:10]=1[N:11]1[C:15](=[O:16])[NH:14][C:13]([CH:17]([NH:18][C:19]2[CH:20]=[CH:21][C:22]([C:25](=[NH:26])[NH2:29])=[CH:23][CH:24]=2)[C:31]2[CH:40]=[C:39]([O:41][CH3:42])[C:34]3[O:35][CH2:36][CH2:37][O:38][C:33]=3[C:32]=2[F:43])=[N:12]1)=[O:5])[CH3:2]

Participants

Conditions

Temperature: 62.5 °C

Procedure

To a solution of 68 mg of 5-(3-{(5-fluoro-8-methoxy-2,3-dihydrobenzo[1,4]dioxin-6-yl)-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamino]methyl}-5-oxo-4,5-dihydro-[1,2,4]triazol-1-yl)-1H-pyrazole-4-carboxylic acid ethyl ester in 6 ml of a methanol:water:acetic acid=1:1:1 mixed solvent there was added 68 mg of iron powder, and the mixture was stirred at 62.5° C. for 40 hours under a nitrogen atmosphere. After cooling, the reaction mixture was filtered through celite and purified by reverse-phase high performance liquid chromatography (acetonitrile-water, 0.1% acetic acid). The title compound (16.0 mg) was obtained as a white solid.

Workup

temperatureAfter cooling
filtrationthe reaction mixture was filtered through celite
custompurified by reverse-phase high performance liquid chromatography (acetonitrile-water, 0.1% acetic acid)

Sources & evidence

ORD record: ord-16655160a6fa489d9e733e723e24c583
Source dataset: uspto-grants-2010_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07816522B2

Reaction notes

Loading…