1-(Piperidin-3-yl)methanamine → 7-[3-(Aminomethyl)-1-piperidinyl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid

HRID 868040Notes

Reaction equation

HRID 868040 reaction equation
Cl[C:2]1[N:11]=[C:10]2[C:5]([C:6](=[O:17])[C:7]([C:14]([OH:16])=[O:15])=[CH:8][N:9]2[CH2:12][CH3:13])=[CH:4][C:3]=1[F:18].[NH2:19][CH2:20][CH:21]1[CH2:26][CH2:25][CH2:24][NH:23][CH2:22]1>C(#N)C>[NH2:19][CH2:20][CH:21]1[CH2:26][CH2:25][CH2:24][N:23]([C:2]2[N:11]=[C:10]3[C:5]([C:6](=[O:17])[C:7]([C:14]([OH:16])=[O:15])=[CH:8][N:9]3[CH2:12][CH3:13])=[CH:4][C:3]=2[F:18])[CH2:22]1

Participants

4

Reactant 2

HCID 908801-(Piperidin-3-yl)methanamineHCID 127908597-Chloro-1-ethyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid

Product 1

HCID 137727397-[3-(Aminomethyl)-1-piperidinyl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acidYield 91.9%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

A mixture of 1.04 g (3.84 mmole) of 7-chloro-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, 100 ml of acetonitrile and 1.32 g (11.5 mmole) of 3-aminomethylpiperidine [J. Org. Chem., 44, 4536 (1979)] were stirred at room temperature for four days. The reaction was filtered and the precipitate dissolved in aqueous ammonia, pH 10.5. The solution was filtered and the solvent removed at reduced pressure. The product was washed with water, then ether until dry to give 1.23 g of 7-[3-(aminomethyl)-1-piperidinyl]-1-ethyl-6-fluoro-1,4-dihydro-4-oxo-1,8-naphthyridine-3-carboxylic acid, mp 120°-122° C.

Workup

  1. filtrationThe reaction was filtered
  2. dissolutionthe precipitate dissolved in aqueous ammonia
  3. filtrationThe solution was filtered
  4. customthe solvent removed at reduced pressure
  5. washThe product was washed with water
  6. dry with materialether until dry

Sources & evidence

ORD record
ord-2c1e751012e14199bd0434b439fb7cf0
Source dataset
uspto-grants-1988_10
Patent number
US04777175

Reaction notes

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