Sodium borohydride → Tert-butyl 1-[2-amino-6-[2-(benzyloxy)phenyl]-3-(hydroxymethyl)-4-pyridinyl]-2-phenylethylcarbamate

HRID 1611185Notes

Reaction equation

HRID 1611185 reaction equation
[NH2:1][C:2]1[C:7]([CH:8]=[O:9])=[C:6]([CH:10]([NH:18][C:19](=[O:25])[O:20][C:21]([CH3:24])([CH3:23])[CH3:22])[CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH:5]=[C:4]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=2[O:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[N:3]=1.[BH4-].[Na+]>C(O)C>[NH2:1][C:2]1[C:7]([CH2:8][OH:9])=[C:6]([CH:10]([NH:18][C:19](=[O:25])[O:20][C:21]([CH3:23])([CH3:24])[CH3:22])[CH2:11][C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)[CH:5]=[C:4]([C:26]2[CH:31]=[CH:30][CH:29]=[CH:28][C:27]=2[O:32][CH2:33][C:34]2[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=2)[N:3]=1

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 20585432Tert-butyl 1-{2-amino-6-[2-(benzyloxy)phenyl]-3-formyl-4-pyridinyl}-2-phenylethylcarbamate

Product 1

HCID 20585433Tert-butyl 1-[2-amino-6-[2-(benzyloxy)phenyl]-3-(hydroxymethyl)-4-pyridinyl]-2-phenylethylcarbamateYield 57%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of tert-butyl 1-{2-amino-6-[2-(benzyloxy)phenyl]-3-formyl-4-pyridinyl}-2-phenylethylcarbamate (0.040 g, 0.092 mmol) in ethanol (1.0 mL) was added NaBH4 (0.010 g, 0.26 mmol), and the stirring was continued for 3 hrs. The mixture was extracted with ethyl acetate and saturated aqueous ammoniun chloride solution. The separated organic phase was washed with water and brine successively, dried over Na2SO4, filtered and concentrated under reduced pressure. The crude product was crystallized from ethanol to give tert-butyl 1-[2-amino-6-[2-(benzyloxy)phenyl]-3-(hydroxymethyl)-4-pyridinyl]-2-phenylethylcarbamate as a pale yellow solid (0.023 g, yield; 57%).

Workup

  1. extractionThe mixture was extracted with ethyl acetate and saturated aqueous ammoniun chloride solution
  2. washThe separated organic phase was washed with water and brine successively
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe crude product was crystallized from ethanol

Sources & evidence

ORD record
ord-e354cdd6ac1748c48b1ec16d4cc48edd
Source dataset
uspto-grants-2006_01
Patent number
US06984649B1

Reaction notes

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