Potassium Carbonate → Ethyl 1-(4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}piperidin-1-yl)-2,7-naphthyridine-3-carboxylate

HRID 2234024Notes

Reaction equation

Cl[C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[N:9][CH:10]=2)[CH:5]=[C:4]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[N:3]=1.FC(F)(F)C([O-])=O.[Cl:24][C:25]1[C:29]([Cl:30])=[C:28]([CH3:31])[NH:27][C:26]=1[C:32]([NH:34][CH:35]1[CH2:40][CH2:39][NH2+:38][CH2:37][CH2:36]1)=[O:33].C([O-])([O-])=O.[K+].[K+]>C(O)(C)(C)C>[Cl:24][C:25]1[C:29]([Cl:30])=[C:28]([CH3:31])[NH:27][C:26]=1[C:32]([NH:34][CH:35]1[CH2:40][CH2:39][N:38]([C:2]2[C:11]3[C:6](=[CH:7][CH:8]=[N:9][CH:10]=3)[CH:5]=[C:4]([C:12]([O:14][CH2:15][CH3:16])=[O:13])[N:3]=2)[CH2:37][CH2:36]1)=[O:33]

Participants

Conditions

Temperature: 170 °C

Procedure

In a sealed high pressure container with a Teflon lining was combined ethyl 1-chloro-2,7-naphthyridine-3-carboxylate (280 mg, 1.18 mmol), 4-{[(3,4-dichloro-5-methyl-1H-pyrrol-2-yl)carbonyl]amino}piperidinium trifluoroacetate (Intermediate 86; 957 mg), and K2CO3 (1.25 g) in 15 ml tert-butanol. The container was heated at 170° C. with stirring for 8 hours. The solution was concentrated by rotary evaporation and reconstituted with EtOAc. The organic layer was washed 4× with H2O, and dried over MgSO4. Product was purified on reverse phase Si to yield 36 mg white solid.

Workup

concentrationThe solution was concentrated by rotary evaporation
washThe organic layer was washed 4× with H2O
dry with materialdried over MgSO4
customProduct was purified on reverse phase Si

Sources & evidence

ORD record: ord-6ed21360dfdf475c9d0f2d15091a0027
Source dataset: uspto-grants-2010_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07709503B2

Reaction notes

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