Lithium Hydroxide → {4-[5-(Cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-2-fluoro-phenyl}-acetic acid

HRID 1765787Notes

Reaction equation

HRID 1765787 reaction equation
C[O:2][C:3](=[O:33])[CH2:4][C:5]1[CH:10]=[CH:9][C:8]([C:11]#[C:12][C:13]2[CH:22]=[C:21]([O:23][CH3:24])[C:20]3[CH:19]([N:25]([CH:27]4[CH2:29][CH2:28]4)[CH3:26])[CH2:18][CH2:17][C:16]([CH3:31])([CH3:30])[C:15]=3[CH:14]=2)=[CH:7][C:6]=1[F:32].[OH-].[Li+]>CO.O1CCCC1>[CH:27]1([N:25]([CH3:26])[CH:19]2[CH2:18][CH2:17][C:16]([CH3:30])([CH3:31])[C:15]3[CH:14]=[C:13]([C:12]#[C:11][C:8]4[CH:9]=[CH:10][C:5]([CH2:4][C:3]([OH:33])=[O:2])=[C:6]([F:32])[CH:7]=4)[CH:22]=[C:21]([O:23][CH3:24])[C:20]2=3)[CH2:28][CH2:29]1

Participants

5

Reactant 2

HCID 3939Lithium HydroxideHCID 69074012{4-[5-(Cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-2-fluoro-phenyl}-acetic acid methyl ester2×

Product 1

HCID 21107177{4-[5-(Cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-2-fluoro-phenyl}-acetic acidYield 35%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of {4-[5-(cyclopropyl-methyl-amino)-4-methoxy-8,8-dimethyl-5,6,7,8-tetrahydro-naphthalen-2-ylethynyl]-2-fluoro-phenyl}-acetic acid methyl ester (Intermediate 83, 0.12 g, 0.27 mmol) in methanol (4 mL) and tetrahydrofuran (4 mL) was treated with a 2 M solution of lithium hydroxide (2 mL, 4 mmol) and the resulting reaction mixture was stirred at ambient temperature-for-2 h. The reaction mixture was concentrated, neutralized with ammonium chloride and extracted with ethyl acetate. The organic phase was washed with water and brine, and dried over anhydrous magnesium sulfate, filtered and evaporated in vacuo to a residue that was subjected to flash column chromatography over silica gel (230–400 mesh) using 5–8% methanol in ethyl acetate as the eluent to afford the title product as a white amorphous solid (0.041 g, 35%).

Workup

  1. customthe resulting reaction mixture
  2. concentrationThe reaction mixture was concentrated
  3. extractionextracted with ethyl acetate
  4. washThe organic phase was washed with water and brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. filtrationfiltered
  7. customevaporated in vacuo to a residue that

Sources & evidence

ORD record
ord-b3d3de471a83446b8ac463a88855553a
Source dataset
uspto-grants-2007_06
Patent number
US07226951B2

Reaction notes

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