Sodium Hydroxide → HCID 67467437, compound

HRID 62413Notes

Reaction equation

HRID 62413 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([C:15]([O:17]CC)=[O:16])[C:5]2[CH:6]=[CH:7][N:8]([CH:11]3[CH2:14][CH2:13][CH2:12]3)[C:9]=2[CH:10]=1.[OH-].[Na+]>CO.C1COCC1>[Br:1][C:2]1[CH:3]=[C:4]([C:15]([OH:17])=[O:16])[C:5]2[CH:6]=[CH:7][N:8]([CH:11]3[CH2:12][CH2:13][CH2:14]3)[C:9]=2[CH:10]=1

Participants

5

Reactant 2

HCID 14798Sodium HydroxideHCID 67467592ethyl 6-bromo-1-cyclobutyl-1H-indole-4-carboxylate

Product 1

HCID 67467437HCID 67467437, compoundYield 55%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

To a solution of ethyl 6-bromo-1-cyclobutyl-1H-indole-4-carboxylate (0.3 g, 0.973 mmol) (crude residue from above) in MeOH (8 mL) and THF (2 mL) was added 3 M NaOH (1.298 mL, 3.89 mmol). The reaction was stirred at RT for 16 h, at which time the volatiles were removed in vacuo. The residue was diluted with water and slowly acidified with 1 N HCl to pH 3-4. The solids were filtered and dried on hivac for 16 h to give 6-bromo-1-cyclobutyl-1H-indole-4-carboxylic acid (0.21 g, 0.535 mmol, 55.0% yield). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.79-1.89 (m, 2H) 2.34-2.46 (m, 2H) 3.84 (s, 1H) 5.08 (t, J=8.21 Hz, 1H) 6.99 (d, J=3.03 Hz, 1H) 7.75-7.79 (m, 1H) 7.81 (d, J=3.03 Hz, 1H) 8.01-8.05 (m, 1H) 13.03 (br. s., 1H). MS(ES) [M+H]+ 294.1.

Workup

  1. customwere removed in vacuo
  2. additionThe residue was diluted with water
  3. filtrationThe solids were filtered
  4. customdried on hivac for 16 h

Sources & evidence

ORD record
ord-4dd5823c26f7435b84087161bb9c4c01
Source dataset
uspto-grants-2016_09
Patent number
US09446041B2

Reaction notes

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