HCID 21909277, compound → HCID 21909331, compound

HRID 1982837Notes

Reaction equation

HRID 1982837 reaction equation
C([O:8][C:9]1[CH:10]=[C:11]([NH:24]C(=O)OCC2C=CC=CC=2)[CH:12]=[CH:13][C:14]=1[CH2:15][C:16]1[CH:21]=[CH:20][C:19]([CH2:22][CH3:23])=[CH:18][CH:17]=1)C1C=CC=CC=1>CO.[C].[Pd]>[NH2:24][C:11]1[CH:12]=[CH:13][C:14]([CH2:15][C:16]2[CH:17]=[CH:18][C:19]([CH2:22][CH3:23])=[CH:20][CH:21]=2)=[C:9]([OH:8])[CH:10]=1

Participants

4

Reactant 1

HCID 21909277HCID 21909277, compound

Product 1

HCID 21909331HCID 21909331, compoundYield 76.6%

Reagents, catalysts & solvents 2

HCID 178418390HCID 178418390, compoundCatalystHCID 887MethanolSolvent

Procedure

To a solution of 3-benzyloxy-4-(4-ethylbenzyl)benzoic acid (1.4 g) and triethylamine (1.3 mL) in 1,4-dioxane (10 mL) was added diphenylphosphoryl azide (1.3 g) in 1,4-dioxane (10 mL), and the mixture was stirred at 100° C. for 1 hour. Benzyl alcohol (1.6 mL) was added to the reaction mixture, and the mixture was stirred at the same temperature for 7 hours. The solvent of the reaction mixture was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=4/1) to give benzyl N-[3-benzyloxy-4-(4-ethylbenzyl)phenyl]carbamate (1.4 g). To a solution of the obtained benzyl N-[3-benzyloxy-4-(4-ethylbenzyl)phenyl]carbamate (1.4 g) in methanol (15 mL) was added 10% palladium-carbon powder (0.28 g), and the mixture was stirred under a hydrogen atmosphere for 11 hours. Insoluble materials were removed by filtration, and the solvent of the filtrate was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=1/1) to give 5-amino-2-(4-ethylbenzyl)-phenol (0.54 g).

Workup

  1. customInsoluble materials were removed by filtration
  2. customthe solvent of the filtrate was removed under reduced pressure
  3. customThe residue was purified by column chromatography on silica gel (eluent: hexane/ethyl acetate=1/1)

Sources & evidence

ORD record
ord-b5802ff91eba479d9cdbbbdbac32c6fa
Source dataset
uspto-grants-2009_06
Patent number
US07541341B2

Reaction notes

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