Potassium Carbonate → {4-[3-cyano-1-cyclobutyl-6-(2-methoxy-ethoxy)-1H-indol-2-yl]-phenyl}-carbamic acid 4-methoxy-phenyl ester

HRID 502258Notes

Reaction equation

HRID 502258 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:9]([CH:24]3[CH2:27][CH2:26][CH2:25]3)[C:10]3[C:15]([C:16]=2[C:17]#[N:18])=[CH:14][CH:13]=[C:12]([O:19][CH2:20][CH2:21][O:22][CH3:23])[CH:11]=3)=[CH:4][CH:3]=1.C([O-])([O-])=O.[K+].[K+].Cl[C:35]([O:37][C:38]1[CH:43]=[CH:42][C:41]([O:44][CH3:45])=[CH:40][CH:39]=1)=[O:36]>CCOC(C)=O>[CH3:45][O:44][C:41]1[CH:42]=[CH:43][C:38]([O:37][C:35](=[O:36])[NH:1][C:2]2[CH:3]=[CH:4][C:5]([C:8]3[N:9]([CH:24]4[CH2:27][CH2:26][CH2:25]4)[C:10]4[C:15]([C:16]=3[C:17]#[N:18])=[CH:14][CH:13]=[C:12]([O:19][CH2:20][CH2:21][O:22][CH3:23])[CH:11]=4)=[CH:6][CH:7]=2)=[CH:39][CH:40]=1

Participants

5

Reactant 3

HCID 11430Potassium CarbonateHCID 82128Carbonochloridic acid, 4-methoxyphenyl esterHCID 594253792-(4-aminophenyl)-1-cyclobutyl-6-(2-methoxyethoxy)-1H-indole-3-carbonitrile

Product 1

HCID 59426020{4-[3-cyano-1-cyclobutyl-6-(2-methoxy-ethoxy)-1H-indol-2-yl]-phenyl}-carbamic acid 4-methoxy-phenyl esterYield 98%

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Procedure

To a solution 2-(4-aminophenyl)-1-cyclobutyl-6-(2-methoxyethoxy)-1H-indole-3-carbonitrile (530 mg, 1.58 mmol) in EtOAc (10 mL) is added 2M aqueous K2CO3 (556 uL, 5.9 mmol) and 4-methoxyphenyl chloroformate over a period of 5 min. The reaction mixture is stirred further for 3 h at room temperature. The reaction mixture is diluted with EtOAc (20 mL) and then washed with water (5 mL). The solvents are removed under reduced pressure and the residue is dissolved in EtOAc and then triturated with hexane. The precipitate is collected by filtration and washed with 50% EtOAc/hexane and dried in vacuo to afford {4-[3-cyano-1-cyclobutyl-6-(2-methoxy-ethoxy)-1H-indol-2-yl]-phenyl}-carbamic acid 4-methoxy-phenyl ester (761 mg, 98%).

Workup

  1. washwashed with water (5 mL)
  2. customThe solvents are removed under reduced pressure
  3. dissolutionthe residue is dissolved in EtOAc
  4. customtriturated with hexane
  5. filtrationThe precipitate is collected by filtration
  6. washwashed with 50% EtOAc/hexane
  7. customdried in vacuo

Sources & evidence

ORD record
ord-75ef6ea2c74c434c889759604b4c4893
Source dataset
uspto-grants-2010_08
Patent number
US07772271B2

Reaction notes

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