Toluene → HCID 22032913, compound

HRID 2221196Notes

Reaction equation

HRID 2221196 reaction equation
Br[C:2]1[CH:10]=[C:9]2[C:5]([CH:6]=[CH:7][N:8]2[CH3:11])=[CH:4][CH:3]=1.[C:12]([C:16]1[CH:21]=[CH:20][C:19](B(O)O)=[CH:18][CH:17]=1)([CH3:15])([CH3:14])[CH3:13].C(=O)([O-])[O-].[K+].[K+].C1(C)C=CC=CC=1>O.C(O)C.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[C:12]([C:16]1[CH:21]=[CH:20][C:19]([C:2]2[CH:10]=[C:9]3[C:5]([CH:6]=[CH:7][N:8]3[CH3:11])=[CH:4][CH:3]=2)=[CH:18][CH:17]=1)([CH3:15])([CH3:14])[CH3:13]

Participants

8

Reactant 4

HCID 1140TolueneHCID 11430Potassium CarbonateHCID 27343204-tert-Butylphenylboronic acidHCID 155468546-Bromo-1-methyl-1H-indole

Product 1

HCID 22032913HCID 22032913, compoundYield 56.3%

Reagents, catalysts & solvents 3

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 702EthanolSolventHCID 962WaterSolvent

Procedure

Following the procedure described in Step 2 of Example 5, 6-bromo-1-methyl-1H-indole (1.12 g, 5.33 mmol) was coupled to 4-(tert-butyl)phenylboronic acid (1.07 g, 6.00 mmol), using tetrakis(triphenylphosphine) palladium (0.655 g, 0.567 mmol), and potassium carbonate (2.94 g, 21.3 mmol) in water (10.6 mL), ethanol (2.2 mL), and toluene (23 mL). Purification by flash chromatography (Biotage apparatus) using 0-1% ethyl acetate in hexane as an eluant then drying at 60° C. yielded 6-[4-(tert-butyl)phenyl]-1-methyl-1H-indole as a yellow solid (0.790 g, 56%), mp: 92-94° C. 1HNMR (200 MHz, DMSO-d6): δ 7.55-7.7 (m, 5H), 7.45 (d, 2H, J=7.5 Hz), 7.3 (d, 2H, J=8.5 Hz), 6.6 (d, 1H, J=3.5 Hz), 3.9 (s, 3H), and 1.3 ppm (s, 9H).

Workup

  1. customPurification by flash chromatography (Biotage apparatus)
  2. customthen drying at 60° C.

Sources & evidence

ORD record
ord-7bb60d28db574f30a9b7d89dfe201d7f
Source dataset
uspto-grants-2008_05
Patent number
US07368471B2

Reaction notes

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