Sodium Hydroxide → HCID 15698081, compound

HRID 847108Notes

Reaction equation

HRID 847108 reaction equation
[C:1]([O:5][C:6]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=1[C:14]1[CH:19]=[CH:18][C:17]([CH2:20][N:21]2[C:25]([CH:26]=[O:27])=[C:24]([CH3:28])[N:23]=[C:22]2[CH2:29][CH2:30][CH3:31])=[CH:16][CH:15]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[BH4-].[Na+].[OH-].[Na+]>CO.O1CCCC1>[C:1]([O:5][C:6]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][C:9]=1[C:14]1[CH:19]=[CH:18][C:17]([CH2:20][N:21]2[C:25]([CH2:26][OH:27])=[C:24]([CH3:28])[N:23]=[C:22]2[CH2:29][CH2:30][CH3:31])=[CH:16][CH:15]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 14798Sodium HydroxideHCID 4311764Sodium borohydrideHCID 15698080HCID 15698080, compound

Product 1

HCID 15698081HCID 15698081, compoundYield 96.3%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
25 °C

Procedure

To a solution of 3.43 g of 1-[(2'-tert-butoxycarbonylbiphenyl-4-yl)methyl]-4-methyl-2-propylimidazole-5-carboxaldehyde (from Example 320, Part D) in 22 mL of methanol and 22 mL of tetrahydrofuran at 25° C. was added in several portions, 3.09 g of sodium borohydride. The reaction mixture was stirred at 25° C. for 1.5 hours and then was poured into dilute aqueous sodium hydroxide solution. After stirring for 0.2 hour at 25° C. this solution was extracted with chloroform. The combined organic phases were washed with water and brine, dried over anhydrous sodium sulfate, filtered, and concentrated. Column chromatography (elution: ethyl acetate/benzene) furnished 3.32 g of 1-[(2'-tert-butoxycarbonylbiphenyl-4-yl)methyl]-5-hydroxymethyl-4-methyl-2-propylimidazole.

Workup

  1. stirringAfter stirring for 0.2 hour at 25° C. this solution
  2. extractionwas extracted with chloroform
  3. washThe combined organic phases were washed with water and brine
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. washColumn chromatography (elution: ethyl acetate/benzene)

Sources & evidence

ORD record
ord-82c82f50abbe4799bceace0f64d9ff5a
Source dataset
uspto-grants-1992_08
Patent number
US05138069

Reaction notes

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