1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 22184968, compound

HRID 348082Notes

Reaction equation

HRID 348082 reaction equation
[CH2:1]([O:3][C:4]([N:6]1[CH2:11][CH2:10][N:9]([C:12]([CH:14]([NH:20][C:21]([C:23]2[CH:32]=[C:31]([O:33][CH3:34])[C:30]3[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=3)[N:24]=2)=[O:22])[CH2:15][CH2:16][C:17](O)=[O:18])=[O:13])[CH2:8][CH2:7]1)=[O:5])[CH3:2].Cl.[C:36]([O:40][C:41](=[O:44])[CH2:42][NH2:43])([CH3:39])([CH3:38])[CH3:37].CN(C)CCCN=C=NCC.ON1C2C=CC=CC=2N=N1.C(N(C(C)C)CC)(C)C>O1CCCC1>[CH2:1]([O:3][C:4]([N:6]1[CH2:7][CH2:8][N:9]([C:12]([CH:14]([NH:20][C:21]([C:23]2[CH:32]=[C:31]([O:33][CH3:34])[C:30]3[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=3)[N:24]=2)=[O:22])[CH2:15][CH2:16][C:17]([NH:43][CH2:42][C:41]([O:40][C:36]([CH3:39])([CH3:38])[CH3:37])=[O:44])=[O:18])=[O:13])[CH2:10][CH2:11]1)=[O:5])[CH3:2]

Participants

7

Reactant 5

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 2725036Glycine tert-butyl ester hydrochlorideHCID 10183806HCID 10183806, compound

Product 1

HCID 22184968HCID 22184968, compoundYield 35.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-[1-(4-(ethoxycarbonyl)piperazin-1-yl)carbonyl-3-carboxypropyl]aminocarbonyl-4-methoxyquinoline (142 mg, 0.30 mmol) in tetrahydrofuran (THF) (5 mL) was added glycine t-butyl ester hydrochloride (44 mg, 0.33 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDCl) (64 mg, 0.33 mmol), 1-hydroxybenzotriazole (HOBT) (45 mg, 0.33 mmol) and diisopropylethylamine (DIEA) (0.43 g, 0.33 mmol). The reaction was stirred at ambient temperature overnight. The resultant solution was partitioned between water and ethyl acetate. The organic layer was concentrated in vacuo to afford an oil. The crude product was purified by elution through silica gel with 20:1 methylene chloride-methanol to afford 2-[1-(4-(ethoxycarbonyl)piperazin-1-yl)carbonyl-3-(((1,1-dimethylethoxycarbonyl)methyl)aminocarbonyl)propyl]aminocarbonyl-4-methoxyquinoline (62 mg, 35%); NMR (CDCl3) 1.25 (t, 3), 1.50 (s, 9), 2.00 (m, 1), 2.15–2.50 (m, 3), 3.31–3.95 (m, 9), 4.10–4.32 (m, 7), 5.40 (m, 1), 759 (t, 1), 7.63 (s, 1), 7.75 (t, 1), 8.14 (d, 1), 8.22 (d, 1), 9.41 (d, 1) ppm.

Workup

  1. customThe resultant solution was partitioned between water and ethyl acetate
  2. concentrationThe organic layer was concentrated in vacuo
  3. customto afford an oil
  4. customThe crude product was purified by elution through silica gel with 20:1 methylene chloride-methanol

Sources & evidence

ORD record
ord-e426acb1c8fd421c9712b63c1cb5cfca
Source dataset
uspto-grants-2007_02
Patent number
US07176207B2

Reaction notes

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