N,N-Dimethylethylenediamine → HCID 14390264, compound

HRID 621927Notes

Reaction equation

HRID 621927 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-b9d842bfbdf0429182314a7fa0bbfc69
Source dataset
uspto-grants-1989_04
Patent number
US04824951

Reaction notes

Loading…