Hydrochloric Acid → (1R,2S)-3-fluoro-1-hydroxy-1-(4-(3-(methylsulfonamidomethyl)isoxazol-5-yl)phenyl)propan-2-aminium chloride

HRID 525612Notes

Reaction equation

[F:1][CH2:2][C@@H:3]1[C@@H:7]([C:8]2[CH:13]=[CH:12][C:11]([C:14]3[O:18][N:17]=[C:16]([CH2:19][NH:20][S:21]([CH3:24])(=[O:23])=[O:22])[CH:15]=3)=[CH:10][CH:9]=2)[O:6]C(C)(C)[N:4]1C(OC(C)(C)C)=O.[ClH:34].O>O1CCOCC1>[Cl-:34].[F:1][CH2:2][C@@H:3]([NH3+:4])[C@H:7]([OH:6])[C:8]1[CH:13]=[CH:12][C:11]([C:14]2[O:18][N:17]=[C:16]([CH2:19][NH:20][S:21]([CH3:24])(=[O:23])=[O:22])[CH:15]=2)=[CH:10][CH:9]=1

Participants

Conditions

Temperature: 0 °C

Procedure

To (4S,5R)-tert-butyl 4-(fluoromethyl)-2,2-dimethyl-5-(4-(3-(methylsulfonamido-methyl)isoxazol-5-yl)phenyl)oxazolidine-3-carboxylate (300 mg, 0.62 mmol) is added 4N HCl in dioxane (4 ml) at room temperature. The solution is then cooled to 0° C. and water (0.5 ml) is added. The ice bath is removed after ten minutes and the reaction is stirred at room temperature for one hour. The volatiles were then removed by rotary evaporation. Several evaporation cycles were performed using acetonitrile to ensure complete removal of water and excess HCl gave the title compound (234 mg): m/z (Cl) 344 ([M+H]+.

Workup

customThe ice bath is removed after ten minutes
customThe volatiles were then removed by rotary evaporation
customSeveral evaporation cycles
customremoval of water and excess HCl

Sources & evidence

ORD record: ord-5f6aa5ce1b9d40a8b1ae86f51699443b
Source dataset: uspto-grants-2016_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09340564B2

Reaction notes

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