Propionic Acid → N-{2-[5-(1-Methyl-2-oxo-1,2,3,4-tetrahydro-quinolin-6-yl)-3,4-dihydro-2H-[1,7]naphthyridin-1-yl]-ethyl}-propionamide

HRID 530353Notes

Reaction equation

HRID 530353 reaction equation
Cl.[NH2:2][CH2:3][CH2:4][N:5]1[C:14]2[C:9](=[C:10]([C:15]3[CH:16]=[C:17]4[C:22](=[CH:23][CH:24]=3)[N:21]([CH3:25])[C:20](=[O:26])[CH2:19][CH2:18]4)[CH:11]=[N:12][CH:13]=2)[CH2:8][CH2:7][CH2:6]1.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.CCN(C(C)C)C(C)C.[C:58](O)(=[O:61])[CH2:59][CH3:60].C([O-])(O)=O.[Na+]>CN(C=O)C.CCOC(C)=O>[CH3:25][N:21]1[C:22]2[C:17](=[CH:16][C:15]([C:10]3[CH:11]=[N:12][CH:13]=[C:14]4[C:9]=3[CH2:8][CH2:7][CH2:6][N:5]4[CH2:4][CH2:3][NH:2][C:58](=[O:61])[CH2:59][CH3:60])=[CH:24][CH:23]=2)[CH2:18][CH2:19][C:20]1=[O:26]

Participants

8

Reactant 5

HCID 1032Propionic AcidHCID 81531DiisopropylethylamineHCID 516892Sodium BicarbonateHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 715364856-[1-(2-Amino-ethyl)-1,2,3,4-tetrahydro-[1,7]naphthyridin-5-yl]-1-methyl-3,4-dihydro-1H-quinolin-2-one hydrochloride

Product 1

HCID 71536487N-{2-[5-(1-Methyl-2-oxo-1,2,3,4-tetrahydro-quinolin-6-yl)-3,4-dihydro-2H-[1,7]naphthyridin-1-yl]-ethyl}-propionamideYield 59.2%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 6-[1-(2-amino-ethyl)-1,2,3,4-tetrahydro-[1,7]naphthyridin-5-yl]-1-methyl-3,4-dihydro-1H-quinolin-2-one hydrochloride (example 12, 0.037 g, 0.099 mmol) in dry DMF (1.5 mL) were added TBTU ((O-(benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate) 0.038 g, 0.119 mmol), Hünig's base (0.032 g, 0.248 mmol) and propionic acid (0.015 g, 0.198 mmol) and the reaction mixture was stirred at room temperature over night. Then, the reaction mixture was diluted with EtOAc, poured into sat. NaHCO3 solution (5 mL) and extracted with EtOAc (2×10 mL). Combined organics were dried over Na2SO4, filtered and evaporated to dryness. The residue was purified by silica gel flash chromatography eluting with a 0 to 10% MeOH (1% NH4OH)-DCM gradient to give the title compound (0.023 g, 59%) as a yellow solid. MS: 393.2 (M+H+).

Workup

  1. extractionextracted with EtOAc (2×10 mL)
  2. dry with materialCombined organics were dried over Na2SO4
  3. filtrationfiltered
  4. customevaporated to dryness
  5. customThe residue was purified by silica gel flash chromatography
  6. washeluting with a 0 to 10% MeOH (1% NH4OH)-DCM gradient

Sources & evidence

ORD record
ord-8ba60999933746dda297e056e8e88497
Source dataset
uspto-grants-2016_05
Patent number
US09353081B2

Reaction notes

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