Cesium carbonate → HCID 67457395, compound

HRID 1922075Notes

Reaction equation

HRID 1922075 reaction equation
[CH3:1][O:2][C:3](=[O:31])[CH2:4][O:5][C:6]1[CH:15]=[CH:14][C:13]([F:16])=[C:12]2[C:7]=1[C:8]([O:27][CH:28]([F:30])[F:29])=[C:9]([CH2:19][C:20]1[CH:25]=[CH:24][C:23](Br)=[CH:22][CH:21]=1)[C:10]([CH2:17][CH3:18])=[N:11]2.[C:32]([O:36][C:37](=[O:39])[NH2:38])([CH3:35])([CH3:34])[CH3:33].CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C(=O)([O-])[O-].[Cs+].[Cs+]>C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C(O)(=O)C.O1CCOCC1>[CH3:1][O:2][C:3](=[O:31])[CH2:4][O:5][C:6]1[CH:15]=[CH:14][C:13]([F:16])=[C:12]2[C:7]=1[C:8]([O:27][CH:28]([F:30])[F:29])=[C:9]([CH2:19][C:20]1[CH:25]=[CH:24][C:23]([NH:38][C:37]([O:36][C:32]([CH3:35])([CH3:34])[CH3:33])=[O:39])=[CH:22][CH:21]=1)[C:10]([CH2:17][CH3:18])=[N:11]2

Participants

8

Reactant 4

HCID 10796Cesium carbonateHCID 77922tert-Butyl carbamateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 66717642HCID 66717642, compound

Product 1

HCID 67457395HCID 67457395, compoundYield 25.6%

Reagents, catalysts & solvents 3

HCID 9811564Bis(dibenzylideneacetone)palladiumCatalystHCID 176Acetic AcidSolventHCID 312751,4-DioxaneSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of [3-(4-bromobenzyl)-4-difluoromethoxy-2-ethyl-8-fluoroquinolin-5-yloxy]acetic acid methyl ester (0.40 g), carbamic acid tert-butyl ester (0.19 g), tris(dibenzylideneacetone)dipalladium(0) (0.073 g), Xantphos (0.014 g), cesium carbonate (0.58 g) and 1,4-dioxane (5.0 mL) was heated at 100° C. for 10 hours. The mixture was cooled to room temperature, acidified by the addition of glacial acetic acid and partitioned between ethyl acetate and water. The organic phase was dried over magnesium sulfate and concentrated under reduced pressure. Purification of the residue by column chromatography on silica gel, eluting with a mixture of dichloromethane and ethyl acetate (1:0 to 10:1 by volume) gave title compound as a yellow gum (0.11 g).

Workup

  1. temperatureThe mixture was cooled to room temperature
  2. custompartitioned between ethyl acetate and water
  3. dry with materialThe organic phase was dried over magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customPurification of the residue by column chromatography on silica gel
  6. washeluting with a mixture of dichloromethane and ethyl acetate (1:0 to 10:1 by volume)

Sources & evidence

ORD record
ord-02b1e91343204b9eb1ef45c9965b7b80
Source dataset
uspto-grants-2012_05
Patent number
US08173812B2

Reaction notes

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