Sodium Carbonate → Ethyl 3-ortho-tolyl-1h-indole-2-carboxylate

HRID 533242Notes

Reaction equation

HRID 533242 reaction equation
Br[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[NH:4][C:3]=1[C:11]([O:13][CH2:14][CH3:15])=[O:12].[C:16]1([CH3:25])[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1B(O)O.C([O-])([O-])=O.[Na+].[Na+]>C(COC)OC.C(OCC)(=O)C>[C:16]1([CH3:25])[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=1[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[CH:8][CH:9]=2)[NH:4][C:3]=1[C:11]([O:13][CH2:14][CH3:15])=[O:12]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 27332672-Methylphenyl boronic acidHCID 4715017Ethyl 3-Bromoindole-2-carboxylate

Product 1

HCID 67316467Ethyl 3-ortho-tolyl-1h-indole-2-carboxylate

Reagents, catalysts & solvents 2

HCID 80711,2-DimethoxyethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

A mixture of EXAMPLE 31B (1.08 g), ortho-tolylboronic acid (1.1 g), (1,1′-bis(diphenylphosphino)ferrocene)dichloropalladium(II) (140 mg) in dimethoxyethane:2N aqueous Na2CO3 (25 mL:5 mL) was stirred under nitrogen at 80° C. for 16 hours, diluted with ethyl acetate and was washed with water and brine. The organic phase was dried (MgSO4), filtered, and concentrated. The concentrate was purified by flash chromatography on silica gel with 0-10% ethyl acetate/hexanes.

Workup

  1. washwas washed with water and brine
  2. dry with materialThe organic phase was dried (MgSO4)
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe concentrate was purified by flash chromatography on silica gel with 0-10% ethyl acetate/hexanes

Sources & evidence

ORD record
ord-d877391228d04a4e9d55fde7a8b24ee9
Source dataset
uspto-grants-2014_10
Patent number
US08853209B2

Reaction notes

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