Sodium hydride → N-Methyl-N-[4-picolyl]formamide

HRID 233565Notes

Reaction equation

HRID 233565 reaction equation
Cl.[N:2]1[CH:7]=[CH:6][C:5]([CH2:8]Cl)=[CH:4][CH:3]=1.[CH3:10][NH:11][CH:12]=[O:13].[H-].[Na+]>C1COCC1>[CH3:10][N:11]([CH:12]=[O:13])[CH2:8][C:5]1[CH:6]=[CH:7][N:2]=[CH:3][CH:4]=1

Participants

5

Reactant 3

HCID 24758Sodium hydrideHCID 31254N-MethylformamideHCID 745704-(Chloromethyl)pyridinium chloride

Product 1

HCID 15893405N-Methyl-N-[4-picolyl]formamideYield 499.4%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a stirring, argon-purged solution of 4-picolyl chloride-HCl (15 g, 91.4 mmol) and N-methylformamide (53.4 ml, 9 14 mmol) in 300 ml of THF at room temperature was added portionwise over a 20 minute period a suspension of 80% NaH (5.48 g, 183 mmol). The reaction was quenched 18h later by the addition of ice, partitioned between methylene chloride and water, washed with water and brine, dried over MgSO4, and evaporated to dryness to afford a dark oil. Flash chromatography on silica gel provided 10.5 g (76%) of the titled compounds a pale yellow oil. TLC; silica gel (9:1 CHCl/MeOH) Rf=0.54.

Workup

  1. additionwas added portionwise over a 20 minute period
  2. customThe reaction was quenched 18h
  3. additionlater by the addition of ice
  4. custompartitioned between methylene chloride and water
  5. washwashed with water and brine
  6. dry with materialdried over MgSO4
  7. customevaporated to dryness
  8. customto afford a dark oil

Sources & evidence

ORD record
ord-15e633b58c9d4a95a933b24597b8392c
Source dataset
uspto-grants-1997_01
Patent number
US05593992

Reaction notes

Loading…