1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochloride → N,N-dimethyl-N-{4-oxo4-[5-(5-vinyl-3H-imidazo[4,5-b]pyridin-3-yl)-2,3-dihydro-1H-indol-1-yl]butyl}amine

HRID 556432Notes

Reaction equation

HRID 556432 reaction equation
[NH:1]1[C:9]2[C:4](=[CH:5][C:6]([N:10]3[C:14]4=[N:15][C:16]([CH:19]=[CH2:20])=[CH:17][CH:18]=[C:13]4[N:12]=[CH:11]3)=[CH:7][CH:8]=2)[CH2:3][CH2:2]1.Cl.[CH3:22][N:23]([CH3:30])[CH2:24][CH2:25][CH2:26][C:27](O)=[O:28].Cl.C(N=C=NCCCN(C)C)C>CN(C)C1C=CN=CC=1.ClCCl>[CH3:22][N:23]([CH3:30])[CH2:24][CH2:25][CH2:26][C:27](=[O:28])[N:1]1[C:9]2[C:4](=[CH:5][C:6]([N:10]3[C:14]4=[N:15][C:16]([CH:19]=[CH2:20])=[CH:17][CH:18]=[C:13]4[N:12]=[CH:11]3)=[CH:7][CH:8]=2)[CH2:3][CH2:2]1

Participants

6

Reactant 3

HCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 126916404-(Dimethylamino)butyric acid hydrochlorideHCID 595597143-(2,3-dihydro-1H-indol-5-yl)-5-vinyl-3H-imidazo[4,5-b]pyridine2×

Product 1

HCID 59559704N,N-dimethyl-N-{4-oxo4-[5-(5-vinyl-3H-imidazo[4,5-b]pyridin-3-yl)-2,3-dihydro-1H-indol-1-yl]butyl}amine

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

A mixture of 3-(2,3-dihydro-1H-indol-5-yl)-5-vinyl-3H-imidazo[4,5-b]pyridine (48.0 mg, 0.14 mmol) (Intermediate 10.1), 4-(dimethylamino)butyric acid hydrochloride (36.3 mg, 0.21 mmol), N-ethyl-N′-(3-dimethylaminopropyl)carbodiimide hydrochloride (54.9 mg, 0.29 mmol), 4-dimethylaminopyridine (122.5 mg, 1.00 mmol), and dichloromethane (8 ml) is stirred for 24 h at ambient temperature. The mixture is successively extracted with saturated aqueous ammonium chloride and saturated aqueous sodium bicarbonate. The organic layer is dried over sodium sulfate and concentrated in vacuo to render 50.4 mg (94%) of the respective amide. HPLC (over 10 min 10-85% MeCN/100 mM aq. NaOAc): 92% purity, tR 6.27 min (tR(SM) 6.61 min).

Workup

  1. extractionThe mixture is successively extracted with saturated aqueous ammonium chloride and saturated aqueous sodium bicarbonate
  2. dry with materialThe organic layer is dried over sodium sulfate
  3. concentrationconcentrated in vacuo
  4. customHPLC (over 10 min 10-85% MeCN/100 mM aq. NaOAc)
  5. custom92% purity, tR 6.27 min (tR(SM) 6.61 min)

Sources & evidence

ORD record
ord-b67cf2c257014146a16d57d5e51deb4b
Source dataset
uspto-grants-2011_11
Patent number
US08058289B2

Reaction notes

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