Formaldehyde → 1-(4-Morpholin-4-ylmethyl-1H-pyrrol-2-yl)-ethanone

HRID 1093966Notes

Reaction equation

HRID 1093966 reaction equation
[NH:1]1[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1.[NH:7]1[CH:11]=[CH:10][CH:9]=[C:8]1[C:12](=[O:14])[CH3:13].[CH2:15]=O.[OH-].[Na+]>C(O)(=O)C.O>[N:1]1([CH2:15][C:10]2[CH:9]=[C:8]([C:12](=[O:14])[CH3:13])[NH:7][CH:11]=2)[CH2:6][CH2:5][O:4][CH2:3][CH2:2]1

Participants

7

Reactant 4

HCID 712FormaldehydeHCID 8083MorpholineHCID 140792-AcetylpyrroleHCID 14798Sodium Hydroxide

Product 1

HCID 666360071-(4-Morpholin-4-ylmethyl-1H-pyrrol-2-yl)-ethanone

Reagents, catalysts & solvents 2

HCID 176Acetic AcidSolventHCID 962WaterSolvent

Procedure

To a solution of morpholine (22 mmoles) in acetic acid (60 ml) at 0° C. there are added 1-(1H-pyrrol-2-yl)-ethanone (20 mmoles) and formaldehyde (20 mmoles) 37% in water. The reaction mixture is stirred overnight at ambient temperature. At 0° C., the solution is brought to alkaline pH (10-12) using 20% aqueous NaOH solution and is then extracted with DCM. The organic phase is washed with water and with saturated aqueous NaCl solution, dried over sodium sulphate, filtered and evaporated to dryness. Purification by flash chromatography on silica gel (SiO2; gradient DCM/MeOH) to yield the title product.

Workup

  1. customAt 0° C.
  2. extractionis then extracted with DCM
  3. washThe organic phase is washed with water and with saturated aqueous NaCl solution
  4. dry with materialdried over sodium sulphate
  5. filtrationfiltered
  6. customevaporated to dryness
  7. customPurification by flash chromatography on silica gel (SiO2; gradient DCM/MeOH)

Sources & evidence

ORD record
ord-983751c3b406440185b84d144fdce35d
Source dataset
uspto-grants-2012_03
Patent number
US08133889B2

Reaction notes

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