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Sodium borohydride → (2-Methylquinolin-6-yl)methanol

HRID 1620288
Notes
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Reaction equation

HRID 1620288 reaction equation
[CH3:1][C:2]1[CH:11]=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[C:7]([CH:12]=[O:13])[CH:8]=2)[N:3]=1.[BH4-].[Na+]>C1COCC1>[CH3:1][C:2]1[CH:11]=[CH:10][C:9]2[C:4](=[CH:5][CH:6]=[C:7]([CH2:12][OH:13])[CH:8]=2)[N:3]=1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 4311764Sodium borohydrideHCID 75374862-Methylquinoline-6-carboxaldehyde

Product 1

HCID 2795481(2-Methylquinolin-6-yl)methanolYield 105.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a stirred solution of 2-methylquinoline-6-carbaldehyde (1.00 g, 5.8 mmol) in THF (60 mL) in a 100 mL round-bottomed flask equipped with a magnetic stirrer was added NaBH4 (0.221 g, 5.8 mmol) and the mixture was stirred overnight at RT then cooled in an ice bath before quenching by addition of a 1 N aq. HCl solution (10 mL). After stirring for 15 min at RT, the mixture was basified to pH=9 with a 2 N aq. NaOH solution. THF was then removed at 40° C. under vacuum and the solution was extracted with CH2Cl2 (200 mL), washed with brine (20 mL), dried over Na2SO4, filtered and concentrated under vacuum to give (2-methylquinolin-6-yl)methanol SLA 47080A as a yellow oil (1.056 g, quant.).

Workup

  1. temperaturethen cooled in an ice bath
  2. custombefore quenching by addition of a 1 N aq. HCl solution (10 mL)
  3. stirringAfter stirring for 15 min at RT
  4. customTHF was then removed at 40° C. under vacuum
  5. extractionthe solution was extracted with CH2Cl2 (200 mL)
  6. washwashed with brine (20 mL)
  7. dry with materialdried over Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated under vacuum

Sources & evidence

ORD record
ord-749a0a61be634611adbb132d86c4acae
Source dataset
uspto-grants-2014_07
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08772316B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes