Hydrochloric Acid → HCID 68297721, compound

HRID 919961Notes

Reaction equation

HRID 919961 reaction equation
[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:31])=[C:7]2[C:12](=[C:13](Br)[N:14]=1)[N:11]([CH2:16][CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[C:10](=[O:24])[C:9]([C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)=[CH:8]2)=[O:4].C([Sn](CCCC)(CCCC)[C:37]1[CH:38]=[N:39][CH:40]=[CH:41][CH:42]=1)CCC.CCOC(C)=O.Cl>CN(C=O)C.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.O>[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:31])=[C:7]2[C:12](=[C:13]([C:37]3[CH:38]=[N:39][CH:40]=[CH:41][CH:42]=3)[N:14]=1)[N:11]([CH2:16][CH2:17][C:18]1[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=1)[C:10](=[O:24])[C:9]([C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1)=[CH:8]2)=[O:4]

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 8857Ethyl AcetateHCID 34838483-(Tributylstannyl)pyridineHCID 86714159HCID 86714159, compound

Product 1

HCID 68297721HCID 68297721, compoundYield 57.1%

Reagents, catalysts & solvents 3

HCID 178418476HCID 178418476, compoundCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of 8-bromo-5-hydroxy-2-oxo-1-phenethyl-3-phenyl-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (54 mg, 0.11 mmol), 3-tributylstannanyl-pyridine (0.054 mL, 0.17 mmol) and PdCl2(PPh3)2 (16 mg, 0.023 mmol) in 3 mL of DMF was heated at 120° C. for 2 h under nitrogen atmosphere. After the mixture was cooled to r.t., EtOAc and water were added. 1 M HCl was added with stirring until pH was about 3-4. The aqueous layer was extracted with additional EtOAc, and the combined organic layer was washed with water and dried over MgSO4. After evaporating the solvent in vacuo, the crude product was purified by silica gel chromatography (10-90% EtOAc/hexanes) to give 30 mg of the title compound as a yellow solid. MS: (+) m/z 478.39 (M+1).

Workup

  1. temperatureAfter the mixture was cooled to r.t.
  2. extractionThe aqueous layer was extracted with additional EtOAc
  3. washthe combined organic layer was washed with water
  4. dry with materialdried over MgSO4
  5. customAfter evaporating the solvent in vacuo
  6. customthe crude product was purified by silica gel chromatography (10-90% EtOAc/hexanes)

Sources & evidence

ORD record
ord-bbcfffac9b42478eaa566d002b0f65a5
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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