Acetic Acid → ethyl 1-{2-[7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1-methyl-1H-indol-3-yl]ethyl}-4-piperidinecarboxylate

HRID 1512797Notes

Reaction equation

HRID 1512797 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]=[CH:19][CH:20]=[C:21]4[C:25]=3[N:24]([CH3:26])[CH:23]=[C:22]4[CH2:27][CH:28]=O)[N:13]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:11])[CH3:10].[NH:30]1[CH2:35][CH2:34][CH:33]([C:36]([O:38][CH2:39][CH3:40])=[O:37])[CH2:32][CH2:31]1.C(O)(=O)C.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+]>C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[C:4]([C:12]2[O:16][N:15]=[C:14]([C:17]3[CH:18]=[CH:19][CH:20]=[C:21]4[C:25]=3[N:24]([CH3:26])[CH:23]=[C:22]4[CH2:27][CH2:28][N:30]3[CH2:35][CH2:34][CH:33]([C:36]([O:38][CH2:39][CH3:40])=[O:37])[CH2:32][CH2:31]3)[N:13]=2)[CH:5]=[CH:6][C:7]=1[O:8][CH:9]([CH3:10])[CH3:11]

Participants

6

Reactant 4

HCID 176Acetic AcidHCID 70770Ethyl 4-piperidinecarboxylateHCID 5049666Sodium triacetoxyborohydrideHCID 59146184HCID 59146184, compound

Product 1

HCID 59146131ethyl 1-{2-[7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1-methyl-1H-indol-3-yl]ethyl}-4-piperidinecarboxylateYield 89.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
20 °C

Procedure

To a stirred solution of [7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1-methyl-1H-indol-3-yl]acetaldehyde (D88) (50 mg), ethyl 4-piperidinecarboxylate (38 mg) and acetic acid (0.1 mL) in DCM (10 mL) was added sodium triacetoxyborohydride (52 mg). The reaction was stirred at 20° C. for 3 h. The mixture was quenched with water, partitioned between DCM (25 mL) and water (25 mL). The organic phase was washed with brine, dried over sodium sulphate and evaporated to afford the crude product ethyl 1-{2-[7-(5-{3-chloro-4-[(1-methylethyl)oxy]phenyl}-1,2,4-oxadiazol-3-yl)-1-methyl-1H-indol-3-yl]ethyl}-4-piperidinecarboxylate (D91) (60 mg). MS (ES): C30H35ClN4O4 requires 550; found 551.3 (M+H+).

Workup

  1. customThe mixture was quenched with water
  2. custompartitioned between DCM (25 mL) and water (25 mL)
  3. washThe organic phase was washed with brine
  4. dry with materialdried over sodium sulphate
  5. customevaporated

Sources & evidence

ORD record
ord-afee19761e1342b0b138128849af1522
Source dataset
uspto-grants-2012_07
Patent number
US08217028B2

Reaction notes

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