Dimethylformamide → N-Ethyl-N-[3-(6-chloro-3-pyridazinyl)phenyl]acetamide

HRID 35630Notes

Reaction equation

HRID 35630 reaction equation
[Cl:1][C:2]1[N:7]=[N:6][C:5]([C:8]2[CH:9]=[C:10]([NH:14][C:15](=[O:17])[CH3:16])[CH:11]=[CH:12][CH:13]=2)=[CH:4][CH:3]=1.[H-].[Na+].CN(C)C=O.[CH2:25](I)[CH3:26]>O>[CH2:25]([N:14]([C:10]1[CH:11]=[CH:12][CH:13]=[C:8]([C:5]2[N:6]=[N:7][C:2]([Cl:1])=[CH:3][CH:4]=2)[CH:9]=1)[C:15](=[O:17])[CH3:16])[CH3:26]

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 6340Iodoethane2×HCID 24758Sodium hydride2×HCID 15595701N-[3-(6-Chloro-3-pyridazinyl)phenyl]acetamide

Product 1

HCID 14280297N-Ethyl-N-[3-(6-chloro-3-pyridazinyl)phenyl]acetamide

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 4.0 g of N-[3-(6-chloro-3-pyridazinyl)phenyl]acetamide, 0.85 g of sodium hydride (50% in oil) and 300 ml of dry dimethylformamide, under argon, was stirred for 1 hour then 1.42 ml of ethyl iodide was added. After stirring for 2.5 hours, 0.5 equivalent of sodium hydride and 1.1 equivalent of ethyl iodide were added. This mixture was stirred overnight, poured into 1 liter of water and extracted with five 100 ml portions of dichloromethane. The extracts were combined, dried and evaporated in vacuo, giving 3.6 g of the desired compound as tan crystals, mp 105°-110° C.

Workup

  1. stirringAfter stirring for 2.5 hours
  2. stirringThis mixture was stirred overnight
  3. extractionextracted with five 100 ml portions of dichloromethane
  4. customdried
  5. customevaporated in vacuo

Sources & evidence

ORD record
ord-d1bd702a67614c2bab2399b230eb725a
Source dataset
uspto-grants-1988_08
Patent number
US04767765

Reaction notes

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