1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → 7-(dibenzylamino)-N-(4-pyridinylmethyl)-1H-pyrrolo[2,3-c]pyridine-2-carboxamide

HRID 1821845Notes

Reaction equation

HRID 1821845 reaction equation
[CH2:1]([N:8]([CH2:21][C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1)[C:9]1[N:10]=[CH:11][CH:12]=[C:13]2[CH:17]=[C:16]([C:18]([OH:20])=O)[NH:15][C:14]=12)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[NH2:28][CH2:29][C:30]1[CH:35]=[CH:34][N:33]=[CH:32][CH:31]=1.C(N=C=NCCCN(C)C)C.ON1C2C=CC=CC=2N=N1>O.CN(C)C=O>[CH2:21]([N:8]([CH2:1][C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1)[C:9]1[N:10]=[CH:11][CH:12]=[C:13]2[CH:17]=[C:16]([C:18]([NH:28][CH2:29][C:30]3[CH:35]=[CH:34][N:33]=[CH:32][CH:31]=3)=[O:20])[NH:15][C:14]=12)[C:22]1[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=1

Participants

7

Reactant 4

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 773174-PyridinemethanamineHCID 689809557-(dibenzylamino)-1H-pyrrolo[2,3-c]pyridine-2-carboxylic acid

Product 1

HCID 578934767-(dibenzylamino)-N-(4-pyridinylmethyl)-1H-pyrrolo[2,3-c]pyridine-2-carboxamideYield 84.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A mixture of 7-(dibenzylamino)-1H-pyrrolo[2,3-c]pyridine-2-carboxylic acid (Reference Example 4) (398 mg, 1.11 mmol), 4-(aminomethyl)pyridine (169 mg, 1.56 mmol), 1-ethyl-3-dimethylaminopropylcarbodiimide (EDCI) (299 mg, 1.56 mmol), 1-hydroxybenzotriazole (HOBt) (211 mg, 1.56 mol) and N,N-dimethylformamide (5 mL) was stirred at room temperature for 18 h. The mixture was diluted with water and extracted with ethyl acetate. The organic extract was washed with aqueous sodium hydrogen carbonate, dried over sodium sulfate, and concentrated in vacuo. The residue was purified by column chromatography (silica gel, 0:10 to 1:10 methanol/ethyl acetate). Recrystallization from hexanes/ethyl acetate gave 7-(dibenzylamino)-N-(4-pyridinylmethyl)-1H-pyrrolo[2,3-c]pyridine-2-carboxamide (419 mg, 84%) as colorless crystals: Rf 0.20 (silica gel, ethyl acetate); mp 119-120° C.; 1H NMR (300 MHz, CDCl3) δ4.62 (2H, d, J=6.0 Hz), 4.90 (4H, s), 6.40-6.52 (1H, m), 6.75 (1H, s), 7.01 (1H, d, J=5.6 Hz), 7.21 (2H, d, J=5.9 Hz), 7.25-7.38 (10H, m), 7.91 (1H, d, J=5.6 Hz), 8.57 (2H, d, J=5.9 Hz), 8.98 (1H, br s); ESI MS m/z 448 [C28H25N5O+H]+; HPLC (Method A) >99% (AUC), tR=15.7 min.

Workup

  1. extractionextracted with ethyl acetate
  2. extractionThe organic extract
  3. washwas washed with aqueous sodium hydrogen carbonate
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by column chromatography (silica gel, 0:10 to 1:10 methanol/ethyl acetate)
  7. customRecrystallization from hexanes/ethyl acetate

Sources & evidence

ORD record
ord-4b79bf04349a4ae9960ea84f4e55a5a1
Source dataset
uspto-grants-2009_10
Patent number
US07608627B2

Reaction notes

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