HCID 59129336, compound → 2-(1-methyl-cyclopropyl)-1H-indol-5-ylamine

HRID 1403933Notes

Reaction equation

HRID 1403933 reaction equation
[CH3:1][C:2]1([C:5]2[NH:6][C:7]3[C:12]([CH:13]=2)=[CH:11][C:10]([N+:14]([O-])=O)=[CH:9][CH:8]=3)[CH2:4][CH2:3]1>CCO.[Ni]>[CH3:1][C:2]1([C:5]2[NH:6][C:7]3[C:12]([CH:13]=2)=[CH:11][C:10]([NH2:14])=[CH:9][CH:8]=3)[CH2:4][CH2:3]1

Participants

4

Reactant 1

HCID 59129336HCID 59129336, compound

Product 1

HCID 591295412-(1-methyl-cyclopropyl)-1H-indol-5-ylamineYield 28.5%

Reagents, catalysts & solvents 2

HCID 935NickelCatalystHCID 702EthanolSolvent

Procedure

To a solution of 2-(1-methylcyclopropyl)-5-nitro-1H-indole (0.70 g, 3.2 mmol) in EtOH (20 mL) was added Raney Nickel (100 mg) under nitrogen atmosphere. The mixture was stirred under hydrogen atmosphere (1 atm) at room temperature overnight. The catalyst was filtered off through a celite pad and the filtrate was evaporated under vacuum. The residue was purified by column chromatography on silica gel (petroleum ether/ethyl acetate=5/1) to afford 2-(1-methyl-cyclopropyl)-1H-indol-5-ylamine (170 mg, 28%). 1H NMR (400 MHz, CDCl3) δ 7.65 (brs, 1H), 7.08 (d, J=8.4 Hz, 1H), 6.82 (s, 1H), 6.57 (d, J=8.4 Hz, 1H), 6.14 (s, 1H), 3.45 (brs, 2H), 1.47 (s, 3H), 0.82-0.78 (m, 2H), 0.68-0.63 (m, 2H).

Workup

  1. filtrationThe catalyst was filtered off through a celite pad
  2. customthe filtrate was evaporated under vacuum
  3. customThe residue was purified by column chromatography on silica gel (petroleum ether/ethyl acetate=5/1)

Sources & evidence

ORD record
ord-cd3349e44fb0497fb3869c576a14b347
Source dataset
uspto-grants-2014_12
Patent number
US08912199B2

Reaction notes

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