Hydrochloric Acid → 4-(4-(Tert-butoxycarbonylamino)phenylthio)-3-(7-isopropylquinazolin-4-ylamino)benzoic acid

HRID 884008Notes

Reaction equation

HRID 884008 reaction equation
[C:1]([O:5][C:6]([NH:8][C:9]1[CH:14]=[CH:13][C:12]([S:15][C:16]2[CH:25]=[CH:24][C:19]([C:20]([O:22]C)=[O:21])=[CH:18][C:17]=2[NH:26][C:27]2[C:36]3[C:31](=[CH:32][C:33]([CH:37]([CH3:39])[CH3:38])=[CH:34][CH:35]=3)[N:30]=[CH:29][N:28]=2)=[CH:11][CH:10]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].O.[OH-].[Li+].Cl>O1CCOCC1.O>[C:1]([O:5][C:6]([NH:8][C:9]1[CH:14]=[CH:13][C:12]([S:15][C:16]2[CH:25]=[CH:24][C:19]([C:20]([OH:22])=[O:21])=[CH:18][C:17]=2[NH:26][C:27]2[C:36]3[C:31](=[CH:32][C:33]([CH:37]([CH3:39])[CH3:38])=[CH:34][CH:35]=3)[N:30]=[CH:29][N:28]=2)=[CH:11][CH:10]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 168937Lithium hydroxide, monohydrateHCID 67040925Methyl 4-(4-(tert-butoxycarbonylamino)phenylthio)-3-(7-isopropylquinazolin-4-ylamino)benzoate

Product 1

HCID 670411334-(4-(Tert-butoxycarbonylamino)phenylthio)-3-(7-isopropylquinazolin-4-ylamino)benzoic acidYield 88%

Reagents, catalysts & solvents 2

HCID 962WaterSolvent2×HCID 312751,4-DioxaneSolvent

Procedure

The product of Example 92D (0.505 g, 0.927 mmol) was suspended in 1,4-dioxane (6 mL), treated with a solution of lithium hydroxide monohydrate (0.078 g, 1.85 mmol) in water (3 mL) at room temperature, then heated at 50° for one hour. The reaction was diluted with water (25 mL), adjusted to pH 1 with 1N aqueous HCl, and extracted with ethyl acetate (50 mL). The organic extract was washed with water (25 mL) and brine (25 mL), dried over magnesium sulfate, filtered, and concentrated by rotary evaporation to afford the title compound as a light yellow solid (0.433 g, 0.816 mmol, 88%). 1H NMR (300 MHz, DMSO-D6) δ ppm 1.31 (d, J=6.99 Hz, 6 H) 1.48 (s, 9 H) 2.98-3.23 (m, 1 H) 6.92 (d, J=8.09 Hz, 1 H) 7.36 (d, J=8.46 Hz, 2 H) 7.54 (d, J=8.82 Hz, 2 H) 7.59 (d, J=11.77 Hz, 1 H) 7.73 (d, J=8.09 Hz, 1 H) 7.89 (s, 1 H) 8.34-8.49 (m, 2 H) 9.61 (s, 1 H) 9.94 (s, 1 H). MS (ESI+) m/z 531 (M+H)+.

Workup

  1. temperatureheated at 50° for one hour
  2. extractionextracted with ethyl acetate (50 mL)
  3. extractionThe organic extract
  4. washwas washed with water (25 mL) and brine (25 mL)
  5. dry with materialdried over magnesium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated by rotary evaporation

Sources & evidence

ORD record
ord-0152a3e204804ba783a9041919145117
Source dataset
uspto-grants-2012_08
Patent number
US08236950B2

Reaction notes

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