Cyclopropylamine → HCID 78322289, compound

HRID 2272698Notes

Reaction equation

HRID 2272698 reaction equation
[CH:1]1([N:6]2[C:10]3=[N:11][CH:12]=[CH:13][CH:14]=[C:9]3[N:8]=[C:7]2[C:15]([O:17]CC)=O)[CH2:5][CH2:4][CH2:3][CH2:2]1.[CH:20]1([NH2:23])[CH2:22][CH2:21]1>C(O)C>[CH:1]1([N:6]2[C:10]3=[N:11][CH:12]=[CH:13][CH:14]=[C:9]3[N:8]=[C:7]2[C:15]([NH:23][CH:20]2[CH2:22][CH2:21]2)=[O:17])[CH2:2][CH2:3][CH2:4][CH2:5]1

Participants

4

Reactant 2

HCID 69828CyclopropylamineHCID 86730065HCID 86730065, compound

Product 1

HCID 78322289HCID 78322289, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

To a solution of ethyl 3-cyclopentyl-3H-imidazo[4,5-b]pyridine-2-carboxylate (C7) (0.12 g, 0.46 mmol) in ethanol (10 mL) was added cyclopropylamine (0.55 g, 9.6 mmol), and the reaction mixture was stirred at room temperature for 18 hours. After concentration in vacuo, purification was effected via preparative thin layer chromatography on silica gel (Eluent: 5:1 petroleum ether/ethyl acetate) to afford the product as a yellow solid. Yield: 36 mg, 0.13 mmol, 28%. LCMS m/z 270.9 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 8.47 (dd, J=4.6, 1.5 Hz, 1H), 8.02 (br d, J=8 Hz, 1H), 7.85 (br s, 1H), 7.27 (dd, J=8.2, 4.6 Hz, 1H, assumed; partially obscured by solvent peak), 6.16-6.27 (m, 1H), 2.89-2.97 (m, 1H), 2.51-2.64 (m, 2H), 2.06-2.19 (m, 4H), 1.69-1.81 (m, 2H), 0.87-0.95 (m, 2H), 0.69-0.76 (m, 2H).

Workup

  1. concentrationAfter concentration
  2. customin vacuo, purification

Sources & evidence

ORD record
ord-b85168af39594ca3891ce45cbc5b770d
Source dataset
uspto-grants-2015_09
Patent number
US09120788B2

Reaction notes

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