Methylamine → tert-butyl(3R)-6-cyclohexyl-3-{3-[(methylamino)methyl]-1,2,4-oxadiazol-5-yl}hexanoate

HRID 2084444Notes

Reaction equation

[CH:1]1([CH2:7][CH2:8][CH2:9][C@@H:10]([C:19]2[O:23][N:22]=[C:21]([CH2:24]OS(C3C=CC(C)=CC=3)(=O)=O)[N:20]=2)[CH2:11][C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.[CH3:36][NH2:37]>C1COCC1.CCOC(C)=O>[CH:1]1([CH2:7][CH2:8][CH2:9][C@@H:10]([C:19]2[O:23][N:22]=[C:21]([CH2:24][NH:37][CH3:36])[N:20]=2)[CH2:11][C:12]([O:14][C:15]([CH3:18])([CH3:17])[CH3:16])=[O:13])[CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

Conditions

Temperature: 40 °C

Procedure

A solution of tert-butyl (3R)-6-cyclohexyl-3-[3-({[(4-methylphenyl)sulfonyl]oxy}methyl)-1,2,4-oxadiazol-5-yl]hexanoate (preparation 177) (492 mg, 0.97 mmol) in THF (1 ml) was treated with a solution of 2M methylamine in THF (7 ml, 14.4 mmol) and stirred at 40° C. in a sealed vessel for 75 minutes. The reaction mixture was allowed to cool to room temperature and dissolved in EtOAc (100 ml) which was washed with sat. NaHCO3 (100 ml) solution followed by brine. The organic extract was dried over MgSO4, filtered and the solvent was removed under reduced pressure to afford the title compound as a colourless oil (337 mg, 95%).

Workup

temperatureto cool to room temperature
washwas washed with sat. NaHCO3 (100 ml) solution
extractionThe organic extract
dry with materialwas dried over MgSO4
filtrationfiltered
customthe solvent was removed under reduced pressure

Sources & evidence

ORD record: ord-8549ae511d684e36881d5ffde4ca542a
Source dataset: uspto-grants-2004_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06716861B2

Reaction notes

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