N,N-Dimethylethylenediamine → HCID 14390264, compound

HRID 1709474Notes

Reaction equation

HRID 1709474 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:8]2[N:16]([CH2:17][C:18]([OH:20])=O)[C:11]3=[N:12][CH:13]=[CH:14][CH:15]=[C:10]3[N:9]=2)[CH:5]=[CH:6][CH:7]=1.[C:21](N1C=CN=C1)([N:23]1[CH:27]=[CH:26][N:25]=[CH:24]1)=O.CN(C)CCN>O1CCCC1>[Cl:1][C:2]1[CH:3]=[C:4]([C:8]2[N:16]([CH2:17][C:18]([NH:25][CH2:26][CH2:27][N:23]([CH3:24])[CH3:21])=[O:20])[C:11]3=[N:12][CH:13]=[CH:14][CH:15]=[C:10]3[N:9]=2)[CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 66053N,N-DimethylethylenediamineHCID 682631,1'-CarbonyldiimidazoleHCID 143904542-(3-Chlorophenyl)-3H-imidazo[4,5-b]pyridine-3-acetic acid

Product 1

HCID 14390264HCID 14390264, compoundYield 479.8%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

A solution of 2-(3-chlorophenyl)-3H-imidazo[4,5-b]pyridine-3-acetic acid (6.7 g, 0.00233 mole), 1,1'-carbonyldiimidazole (4.0 g, 0.0245 mole), and anhydrous tetrahydrofuran (150 ml) was stirred at room temperature with a stream of nitrogen bubbling through for 21/2 hours. The nitrogen flow was stopped and a solution of N,N-dimethylethylenediamine (2.3 g, 0.0257 mole) in dry tetrahydrofuran (50 ml) was stirred at room temperature under nitrogen for 2 hours. The reaction was concentrated in vacuo and partitioned between methylene chloride (75 ml) and water (75 ml). The layers were separated and the aqueous portion washed with methylene chloride (25 ml). The combined organic portions were washed with potassium bicarbonate solution (2×50 ml), water (25 ml), dried over sodium sulfate, and concentrated in vacuo. The solid residue, 5.7 g (68%) was recrystallized from isopropyl alcohol-isopropyl ether to give 4.0 g of off-white granular solid, mp 124°-125° C.

Workup

  1. concentrationThe reaction was concentrated in vacuo
  2. custompartitioned between methylene chloride (75 ml) and water (75 ml)
  3. customThe layers were separated
  4. washthe aqueous portion washed with methylene chloride (25 ml)
  5. washThe combined organic portions were washed with potassium bicarbonate solution (2×50 ml), water (25 ml)
  6. dry with materialdried over sodium sulfate
  7. concentrationconcentrated in vacuo
  8. customThe solid residue, 5.7 g (68%) was recrystallized from isopropyl alcohol-isopropyl ether

Sources & evidence

ORD record
ord-f49b4bbd707c429e90d81a068aa30f3a
Source dataset
uspto-grants-1990_08
Patent number
US04948800

Reaction notes

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