Hydrochloric Acid → HCID 68297341, compound

HRID 920004Notes

Reaction equation

HRID 920004 reaction equation
[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:30])=[C:7]2[C:12](=[C:13](Br)[N:14]=1)[N:11]([CH2:16][CH:17]1[CH2:22][CH2:21][O:20][CH2:19][CH2:18]1)[C:10](=[O:23])[C:9]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)=[CH:8]2)=[O:4].C([Sn](CCCC)(CCCC)[C:36]1[CH:37]=[N:38][CH:39]=[CH:40][CH:41]=1)CCC.CCOC(C)=O.Cl>CN(C=O)C.[Cl-].[Na+].O.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>[CH3:1][O:2][C:3]([C:5]1[C:6]([OH:30])=[C:7]2[C:12](=[C:13]([C:36]3[CH:37]=[N:38][CH:39]=[CH:40][CH:41]=3)[N:14]=1)[N:11]([CH2:16][CH:17]1[CH2:22][CH2:21][O:20][CH2:19][CH2:18]1)[C:10](=[O:23])[C:9]([C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1)=[CH:8]2)=[O:4]

Participants

8

Reactant 4

HCID 313Hydrochloric AcidHCID 8857Ethyl AcetateHCID 34838483-(Tributylstannyl)pyridineHCID 86714167HCID 86714167, compound

Product 1

HCID 68297341HCID 68297341, compoundYield 40.2%

Reagents, catalysts & solvents 3

HCID 178418476HCID 178418476, compoundCatalystHCID 6228DimethylformamideSolventHCID 57417360Sodium chloride; waterSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of 8-bromo-5-hydroxy-2-oxo-3-phenyl-1-(tetrahydro-pyran-4-ylmethyl)-1,2-dihydro-[1,7]naphthyridine-6-carboxylic acid methyl ester (91 mg, 0.19 mmol), 3-tributylstannanyl-pyridine (0.092 mL, 0.29 mmol) and PdCl2(PPh3)2 (27 mg, 0.038 mmol) in 4 mL of DMF was heated at 120° C. for 3 h under nitrogen atmosphere. After the mixture was cooled to r.t., EtOAc and brine 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 sequentially by flash chromatography (10-100% EtOAc/hexanes+1% AcOH) and preparative TLC (5% MeOH/CH2Cl2) to give 36 mg of the title compound. MS: (+) m/z 472.41 (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 sequentially by flash chromatography (10-100% EtOAc/hexanes+1% AcOH) and preparative TLC (5% MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-f8c01e817a624c4ebede5a88cb7dc98f
Source dataset
uspto-grants-2016_03
Patent number
US09271970B2

Reaction notes

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