Ethylenediaminetetraacetic Acid → 2-anilino-6-fluoro-7-methyl-1-phenyl-1,8-naphthyridin-4(1H)-one

HRID 1839402Notes

Reaction equation

[NH:1]([C:8]1[N:9]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[C:10]2[C:15]([C:16](=[O:18])[CH:17]=1)=[CH:14][C:13]([F:19])=[C:12](Cl)[N:11]=2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[Cl-].C[Zn+].[CH2:30](N(CC(O)=O)CC(O)=O)CN(CC(O)=O)CC(O)=O>C1COCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[NH:1]([C:8]1[N:9]([C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)[C:10]2[C:15]([C:16](=[O:18])[CH:17]=1)=[CH:14][C:13]([F:19])=[C:12]([CH3:30])[N:11]=2)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 75 °C

Procedure

To 2-anilino-7-chloro-6-fluoro-1-phenyl-1,8-naphthyridin-4(1H)-one (100 mg, 0.273 mmol) in THF (5 mL) was added Pd(PPh3)4 (13 mg, 0.001 mmol) and methyl zinc chloride (2M, 0.819 mL, 1.64 mmol) and the reaction was heated to 75° C. for 18 h. The reaction was then cooled to room temperature and poured into a solution of EDTA in water (2.5 g/20 mL) and extracted with Et2O. The organic layer was washed with brine and concentrated in vacuo. The residue was then taken up in MeOH and filtered. The filtrate was concentrated in vacuo to give 2-anilino-6-fluoro-7-methyl-1-phenyl-1,8-naphthyridin-4(1H)-one (83.0 mg, 89%): LCMS RT: 2.43 min, MH+: 346.4.

Workup

temperatureThe reaction was then cooled to room temperature
extractionextracted with Et2O
washThe organic layer was washed with brine
concentrationconcentrated in vacuo
filtrationfiltered
concentrationThe filtrate was concentrated in vacuo

Sources & evidence

ORD record: ord-e91cbe13b7f24c7f96133a1575eace6c
Source dataset: uspto-grants-2004_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06677352B1

Reaction notes

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