Dabco → methyl 3-[5-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1-methyl-1H-indol-2-yl]propanoate

HRID 1512815Notes

Reaction equation

HRID 1512815 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[O:16][N:15]=[C:14]([C:17]3[CH:18]=[C:19]4[C:23](=[CH:24][CH:25]=3)[NH:22][C:21]([CH2:26][CH2:27][C:28]([O:30][CH2:31]C)=[O:29])=[CH:20]4)[N:13]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:11])[CH3:10].[CH2:33]1N2CCN(CC2)C1.C(=O)(OC)OC>CN(C)C=O.C(OCC)(=O)C>[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[O:16][N:15]=[C:14]([C:17]3[CH:18]=[C:19]4[C:23](=[CH:24][CH:25]=3)[N:22]([CH3:33])[C:21]([CH2:26][CH2:27][C:28]([O:30][CH3:31])=[O:29])=[CH:20]4)[N:13]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:11])[CH3:10]

Participants

6

Reactant 3

HCID 9237DabcoHCID 12021Dimethyl CarbonateHCID 59146126ethyl 3-[5-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-2-yl]propanoate

Product 1

HCID 59146152methyl 3-[5-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1-methyl-1H-indol-2-yl]propanoateYield 58.8%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

A solution of ethyl 3-[5-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1H-indol-2-yl]propanoate (D33) (114 mg), DABCO (56 mg) and dimethyl carbonate (2 mL) in N,N-dimethylformamide (DMF, 2 mL) was stirred at 90° C. for 2 days. After cooled to room temperature, the reaction mixture was diluted with ethyl acetate. The organic solution was washed with water. The organic solution was dried over anhydrous sodium sulfate. The dried solution was concentrated. The residue was purified by column chromatography to afford methyl 3-[5-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1-methyl-1H-indol-2-yl]propanoate (D113) (67 mg). MS (ES): C24H24ClN3O4 requires 453; found 454.2 (M+H+).

Workup

  1. washThe organic solution was washed with water
  2. dry with materialThe organic solution was dried over anhydrous sodium sulfate
  3. concentrationThe dried solution was concentrated
  4. customThe residue was purified by column chromatography

Sources & evidence

ORD record
ord-bd02b34cdc3e4c1b9cabe393f8b310a0
Source dataset
uspto-grants-2012_07
Patent number
US08217028B2

Reaction notes

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