Dimethylformamide → tert-butyl [(1S)-2-{[1-(5-methoxy-1,3-benzothiazol-2-yl)piperidin-4-yl]oxy}-1-methylethyl]carbamate

HRID 2368073Notes

Reaction equation

Cl[C:2]1[S:3][C:4]2[CH:10]=[CH:9][C:8]([O:11][CH3:12])=[CH:7][C:5]=2[N:6]=1.[CH3:13][C@H:14]([NH:23][C:24](=[O:30])[O:25][C:26]([CH3:29])([CH3:28])[CH3:27])[CH2:15][O:16][CH:17]1[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]1.C(N(CC)C(C)C)(C)C.CN(C=O)C>O>[CH3:12][O:11][C:8]1[CH:9]=[CH:10][C:4]2[S:3][C:2]([N:20]3[CH2:19][CH2:18][CH:17]([O:16][CH2:15][C@@H:14]([NH:23][C:24](=[O:30])[O:25][C:26]([CH3:29])([CH3:28])[CH3:27])[CH3:13])[CH2:22][CH2:21]3)=[N:6][C:5]=2[CH:7]=1

Participants

Conditions

Temperature: 150 °C

Procedure

A mixture of 2-chloro-5-methoxy-1,3-benzothiazole (143 mg), tert-butyl [(1S)-1-methyl-2-(piperidin-4-yloxy)ethyl]carbamate (186 mg), N,N-diisopropylethylamine (93 mg) and DMF (3 mL) was stirred at 150° C. for 1.5 hr under microwave irradiation. Water was added to the reaction mixture, and the obtained mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (194 mg).

Workup

extractionthe obtained mixture was extracted with ethyl acetate
washThe extract was washed with saturated brine
dry with materialdried over anhydrous sodium sulfate
customThe solvent was evaporated under reduced pressure
customthe residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record: ord-834d1e909bc244d8a1daed8837beede2
Source dataset: uspto-grants-2014_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08703758B2

Reaction notes

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