Water → 2-chloro-3-(hydroxymethyl)-4-[(2S,3S)-3-(1-hydroxy-1-methylethyl)-2-methylpyrrolidin-1-yl]benzonitrile

HRID 2046689Notes

Reaction equation

[Cl:1][C:2]1[C:9]([CH2:10][OH:11])=[C:8](F)[CH:7]=[CH:6][C:3]=1[C:4]#[N:5].[OH:13][C:14]([C@H:17]1[CH2:21][CH2:20][NH:19][C@H:18]1[CH3:22])([CH3:16])[CH3:15].C(=O)([O-])[O-].[Li+].[Li+].O>CS(C)=O>[Cl:1][C:2]1[C:9]([CH2:10][OH:11])=[C:8]([N:19]2[CH2:20][CH2:21][C@H:17]([C:14]([OH:13])([CH3:16])[CH3:15])[C@@H:18]2[CH3:22])[CH:7]=[CH:6][C:3]=1[C:4]#[N:5]

Participants

Conditions

Temperature: 140 °C

Procedure

To a solution (2 mL) of 2-chloro-4-fluoro-3-(hydroxymethyl)benzonitrile (150 mg) in dimethyl sulfoxide were added (2S,3S)-3-(1-hydroxy-1-methylethyl)-2-methylpyrrolidine 1/2 oxalate (167 mg) and lithium carbonate (66 mg), and the mixture was stirred at 140° C. for 10 min in a microwave reaction apparatus. Water was added and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (developing solvent: hexane:ethyl acetate=9:1→1:1) and recrystallized from ethyl acetate-isopropyl ether to give the compound as a pale-yellow solid (yield: 85 mg).

Workup

extractionthe mixture was extracted with ethyl acetate
washThe extract was washed with saturated brine
dry with materialdried over anhydrous sodium sulfate
concentrationconcentrated under reduced pressure
customThe residue was purified by silica gel column chromatography (developing solvent: hexane:ethyl acetate=9:1→1:1)
customrecrystallized from ethyl acetate-isopropyl ether

Sources & evidence

ORD record: ord-46a24537ca484f709cc7ddbc55f3c0b6
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08592452B2

Reaction notes

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