1-Phenethylamine → [1,6]Naphthyridine-2-carboxylic acid (1-phenylethyl) amide

HRID 1383415Notes

Reaction equation

HRID 1383415 reaction equation
[N:1]1[C:10]2[C:5](=[CH:6][N:7]=[CH:8][CH:9]=2)[CH:4]=[CH:3][C:2]=1[C:11]([OH:13])=O.O.ON1C2C=CC=CC=2N=N1.[C:25]1([CH:31]([NH2:33])[CH3:32])[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1>CN(C=O)C>[C:25]1([CH:31]([NH:33][C:11]([C:2]2[CH:3]=[CH:4][C:5]3[C:10](=[CH:9][CH:8]=[N:7][CH:6]=3)[N:1]=2)=[O:13])[CH3:32])[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1

Participants

5

Reactant 3

HCID 74081-PhenethylamineHCID 7359081,6-Naphthyridine-2-carboxylic acidHCID 27960291-Hydroxybenzotriazole hydrate

Product 1

HCID 22980436[1,6]Naphthyridine-2-carboxylic acid (1-phenylethyl) amideYield 99%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a stirring mixture of 2-[1,6]naphthyridinecarboxylic acid (50 mg, 0.287 mmol) in anhydrous DMF (1.0 mL) at room temperature was added sequentially 1-hydroxybenzotriazole hydrate (42.7 mg, 0.316 mmol), 1-phenylethylamine (56.1 μL, 0.431 mmol) and 1-(3-dimethylaminopropyl)-3-ethylcarboiimide hydrochloride (61.8 mg, 0.316 mmol). The resulting mixture was allowed to stir at room temperature overnight and it was found to be clear. The solvent was removed under vacuum. Flash column chromatography of the residue (50% hexane/ethyl acetate to 100% ethyl acetate) afforded the desired product as a clear oil (78.7 mg, 99%).

Workup

  1. customThe solvent was removed under vacuum

Sources & evidence

ORD record
ord-3868ff69f8dc46b5ab7b9e9c24bd22b2
Source dataset
uspto-grants-2001_07
Patent number
US06255318B1

Reaction notes

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