Triethylamine → 7-(1-[(N-acetyl)aminomethyl]-3-azabicyclo[3.1.0]-hex-3-yl)-6-fluoro-1-(2,4-difluorophenyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, ethyl ester

HRID 275203

Reaction equation

HRID 275203 reaction equation
[C:1]([NH:4][CH2:5][C:6]12[CH2:11][CH:10]1[CH2:9][NH:8][CH2:7]2)(=[O:3])[CH3:2].[CH2:12](N(CC)CC)[CH3:13].Cl[C:20]1[N:29]=[C:28]2[C:23]([C:24](=[O:41])[C:25]([C:38]([OH:40])=[O:39])=[CH:26][N:27]2[C:30]2[CH:35]=[CH:34][C:33]([F:36])=[CH:32][C:31]=2[F:37])=[CH:22][C:21]=1[F:42].N1C2C(=CC=CN=2)C=CC=1>C(#N)C>[C:1]([NH:4][CH2:5][C:6]12[CH2:11][CH:10]1[CH2:9][N:8]([C:20]1[N:29]=[C:28]3[C:23]([C:24](=[O:41])[C:25]([C:38]([O:40][CH2:12][CH3:13])=[O:39])=[CH:26][N:27]3[C:30]3[CH:35]=[CH:34][C:33]([F:36])=[CH:32][C:31]=3[F:37])=[CH:22][C:21]=1[F:42])[CH2:7]2)(=[O:3])[CH3:2]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 1360691,8-NaphthyridineHCID 105460847-Chloro-1-(2,4-difluorophenyl)-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acidHCID 157134281-[(N-acetyl)aminomethyl]-3-azabicyclo[3.1.0]hexane

Product 1

HCID 157134527-(1-[(N-acetyl)aminomethyl]-3-azabicyclo[3.1.0]-hex-3-yl)-6-fluoro-1-(2,4-difluorophenyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, ethyl ester

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 1-[(N-acetyl)aminomethyl]-3-azabicyclo[3.1.0]hexane (115.5 mg, 0.75 mmol) and triethylamine (312 μl, 2.25 mmol) in acetonitrile (20 ml) was treated with the ethyl ester of 7-chloro-6-fluoro-1-(2,4-difluorophenyl)-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid (283 mg, 0.74 mmol) and heated to 80° for 20 hours. Additional 1-(N-acetyl)-aminomethyl-3azabicyclo[3.1.0]hexane (97 mg) was added portionwise over 2.5 hours until thin layer chromatography indicated the absence of starting naphthyridine. The reaction mixture was concentrated in vacuo, and the residue chromatographed on silica gel (eluant: 189:10:1 chloroform:methanol:concentrated ammonium hydroxide). The title product was obtained as a colorless oil (280.3 mg, 0.56 mmol, 76% yield).

Workup

  1. temperatureheated to 80° for 20 hours
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. customthe residue chromatographed on silica gel (eluant: 189:10:1 chloroform:methanol:concentrated ammonium hydroxide)

Sources & evidence

ORD record
ord-891a7d7131d744d59f3c6156886b25c4
Source dataset
uspto-grants-1995_02
Patent number
US05391763

Linked notes

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