Toluene → 1-Benzyl-6-phenyl-1H-indole

HRID 1791465Notes

Reaction equation

HRID 1791465 reaction equation
[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][CH:13]=[C:14](Br)[CH:15]=2)[CH:10]=[CH:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:18]1(B(O)O)[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1.C(=O)([O-])[O-].[Na+].[Na+].C1(C)C=CC=CC=1>O.C(O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH2:1]([N:8]1[C:16]2[C:11](=[CH:12][CH:13]=[C:14]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[CH:15]=2)[CH:10]=[CH:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

8

Reactant 4

HCID 1140TolueneHCID 10340Sodium CarbonateHCID 66827Phenylboronic AcidHCID 220329571-benzyl-6-bromo-1H-indole

Product 1

HCID 220329241-Benzyl-6-phenyl-1H-indoleYield 58.4%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 702EthanolSolventHCID 962WaterSolvent

Procedure

1-Benzyl-6-phenyl-1H-indole was prepared by coupling 1-benzyl-6-bromo-1H-indole (3.48 g , 12.2 mmol), and phenylboronic acid (1.63 g, 13.4 mmol), using tetrakis(triphenylphosphine)palladium (0.976 g, 0.846 mmol), and sodium carbonate (5.2 g, 49 mmol) in water (25 mL), ethanol (5 mL), and toluene (55 mL), according to the procedure described in Step 2 of Example 2. Purification by flash chromatography using 0-2.5% ethyl acetate in hexane as an eluant afforded the title compound as a light green solid (2.02 g, 58%), mp: 109-110° C. Mass spectrum (+ES, [M+H]+) m/z 284; 1HNMR (500 MHz, DMSO-d6): δ 7.75 (s, 1H), 7.6-7.65 (m, 3H), 7.55 (d, 1H, J=3.1 Hz), 7.45 (t, 2H, J=7.5 Hz), 7.3-7.35 (m, 4H), 7.2-7.25 (m, 3H), 6.5 (d, 1H, J=3.0 Hz), and 5.5 ppm (s, 2H).

Workup

  1. custom1-Benzyl-6-phenyl-1H-indole was prepared
  2. customPurification by flash chromatography

Sources & evidence

ORD record
ord-43c553875590465da8a05c27dc2ef3b3
Source dataset
uspto-grants-2006_07
Patent number
US07074817B2

Reaction notes

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