1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 25096448, compound

HRID 2067596Notes

Reaction equation

HRID 2067596 reaction equation
[Cl:1][C:2]1[CH:26]=[CH:25][C:5]2[S:6][CH:7]=[C:8]([CH2:9][N:10]3[CH2:14][CH2:13][N:12]([C:15]4[S:16][C:17]([C:21]([OH:23])=O)=[C:18]([CH3:20])[N:19]=4)[C:11]3=[O:24])[C:4]=2[CH:3]=1.ON1C2C=CC=CC=2N=N1.CN(C)CCCN=C=NCC.C(N(C(C)C)CC)(C)C.[NH2:57][CH2:58][C:59]1[CH:60]=[N:61][CH:62]=[CH:63][CH:64]=1>CN(C)C=O>[Cl:1][C:2]1[CH:26]=[CH:25][C:5]2[S:6][CH:7]=[C:8]([CH2:9][N:10]3[CH2:14][CH2:13][N:12]([C:15]4[S:16][C:17]([C:21]([NH:57][CH2:58][C:59]5[CH:60]=[N:61][CH:62]=[CH:63][CH:64]=5)=[O:23])=[C:18]([CH3:20])[N:19]=4)[C:11]3=[O:24])[C:4]=2[CH:3]=1

Participants

7

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 310183-PyridinemethanamineHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 580315052-(3-((5-Chlorobenzo[b]thiophen-3-yl)methyl)-2-oxoimidazolidin-1-yl)-4-methylthiazole-5-carboxylic acid

Product 1

HCID 25096448HCID 25096448, compoundYield 45%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-(3-((5-chlorobenzo[b]thiophen-3-yl)methyl)-2-oxoimidazolidin-1-yl)-4-methylthiazole-5-carboxylic acid (0.55 g, 1.35 mmol) in anhydrous N,N-dimethylformamide (10 mL) was added 1-hydroxy benzotriazole (0.22 g, 1.62 mmol), N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (0.31 g, 1.62 mmol), diisopropylethylamine (0.85 mL, 4.87 mmol) and 3-(aminomethyl)pyridine (0.17 mL, 1.62 mmol). The resulting solution was stirred at ambient temperature for 16 hours, then concentrated in vacuo. The residue was dissolved in dichloromethane (50 mL), washed with saturated aqueous sodium bicarbonate solution (15 mL) and brine (15 mL). The organic layer was dried over anhydrous sodium sulfate, filtered, and concentrated in vacuo. The residue was purified by column chromatography eluted with 55-75% ethyl acetate in hexanes to afford the title compound as a colorless solid in 45% yield (0.30 g): mp 185-187° C. (dichloromethane/hexanes); 1H NMR (300 MHz, CDCl3) δ 8.61 (s, 1H), 8.54 (d, J=6.0 Hz, 1H), 7.87 (s, 1H), 7.78 (d, J=6.0 Hz, 1H), 7.70 (d, J=9.0 Hz, 1H), 7.45 (s, 1H), 7.36-7.28 (m, 2H), 6.09 (br s, 1H), 4.70 (s, 2H), 4.60 (d, J=3.0 Hz, 2H), 4.06 (t, J=6.0 Hz, 2H), 3.47 (t, J=6.0 Hz, 2H), 2.61 (s, 3H); MS (ES+) m/z 498.1 (M+1).

Workup

  1. concentrationconcentrated in vacuo
  2. dissolutionThe residue was dissolved in dichloromethane (50 mL)
  3. washwashed with saturated aqueous sodium bicarbonate solution (15 mL) and brine (15 mL)
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe residue was purified by column chromatography
  8. washeluted with 55-75% ethyl acetate in hexanes

Sources & evidence

ORD record
ord-c0120a5f86a140eab6afd81170b0aa19
Source dataset
uspto-grants-2012_10
Patent number
US08293768B2

Reaction notes

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