Sodium borohydride → HCID 45088722, compound

HRID 1842429Notes

Reaction equation

HRID 1842429 reaction equation
[BH4-].[Na+].[CH3:3][C:4]1[N:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]2=[N:6][C:5]=1[C:13](OC)=[O:14]>C1COCC1.CO>[CH3:3][C:4]1[N:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]2=[N:6][C:5]=1[CH2:13][OH:14]

Participants

5

Reactant 2

HCID 4311764Sodium borohydrideHCID 57690029Methyl 3-methylimidazo[1,2-a]pyridine-2-carboxylate

Product 1

HCID 45088722HCID 45088722, compoundYield 47.05%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

Sodium borohydride (1.5 g, 41.6 mmol) was added to a solution of methyl 3-methylimidazo[1,2-a]pyridine-2-carboxylate (2.0 g, 10.5 mmol) in THF (50 mL) and methanol (2.5 ml) at RT. The reaction mixture was stirred at RT for 2 h (the reaction was monitored by TLC) upon which the mixture was concentrated under reduced pressure. The residue was diluted with water and extracted with EtOAc. The combined organics were dried over sodium sulfate, filtered and concentrated under reduced pressure to afford (3-methylimidazo[1,2-a]pyridin-2-yl)methanol (0.8 g, 47.05%,) as off-white solid. 1H NMR: 200 MHz, CDCl3: δ 7.45 (d, 1H), 7.6 (d, 1H), 7.2 (t, 1H), 6.8 (t, 1H), 4.85 (s, 2H), 2.45 (s, 3H). MS: [M+H]+: m/z=162.9.

Workup

  1. concentrationwas concentrated under reduced pressure
  2. additionThe residue was diluted with water
  3. extractionextracted with EtOAc
  4. dry with materialThe combined organics were dried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-1569f394875c4c769815dac50b7d9c0a
Source dataset
uspto-grants-2015_02
Patent number
US08946222B2

Reaction notes

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