Tetrahydrofuran → HCID 66617286, compound

HRID 73335Notes

Reaction equation

HRID 73335 reaction equation
[CH2:1]([O:3][C:4](=[O:22])[C:5]1[CH:10]=[CH:9][C:8]([N:11]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([CH:20]=[O:21])[CH:18]=3)[CH:13]=[CH:12]2)=[CH:7][CH:6]=1)[CH3:2].O1CCCC1.[BH4-].[Na+].[Cl-].[NH4+]>CO>[CH2:1]([O:3][C:4](=[O:22])[C:5]1[CH:10]=[CH:9][C:8]([N:11]2[C:19]3[C:14](=[CH:15][CH:16]=[C:17]([CH2:20][OH:21])[CH:18]=3)[CH:13]=[CH:12]2)=[CH:7][CH:6]=1)[CH3:2]

Participants

6

Reactant 4

HCID 8028TetrahydrofuranHCID 25517Ammonium ChlorideHCID 4311764Sodium borohydrideHCID 584374994-(6-Formylindol-1-yl)benzoic acid ethyl ester

Product 1

HCID 66617286HCID 66617286, compound

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of 4-(6-formylindol-1-yl)benzoic acid ethyl ester in a mixed solvent of tetrahydrofuran (3 mL) and methanol (10 mL) was added sodium borohydride (0.075 g) at 0° C., and this mixture was stirred at room temperature for 0.5 hours. This reaction mixture was poured into a saturated aqueous ammonium chloride solution and this mixture was extracted with ethyl acetate. This organic layer was washed with brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure to give 4-(6-hydroxymethyl-indol-1-yl)benzoic acid ethyl ester (0.38 g). To a solution of 4-(6-hydroxymethyl-indol-1-yl)benzoic acid ethyl ester (0.09 g) in dichloromethane (1 mL) were added acetic anhydride (0.093 g) and pyridine (0.024 g), and this mixture was stirred at room temperature for 2 days. This mixture was poured into water and the resulting mixture was extracted with ethyl acetate. This organic layer was washed with brine, and dried over anhydrous magnesium sulfate. The solvent was removed under reduced pressure. The residue was purified by column chromatography on silica gel (eluent: n-hexane/ethyl acetate) to give the title compound (0.068 g).

Workup

  1. extractionthis mixture was extracted with ethyl acetate
  2. washThis organic layer was washed with brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was removed under reduced pressure

Sources & evidence

ORD record
ord-3da1eb588ce7441fa0cf5af1db2753f1
Source dataset
uspto-grants-2014_09
Patent number
US08829040B2

Reaction notes

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