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

HRID 605388
Notes
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Reaction equation

HRID 605388 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]
ParticipantsProcedureWorkupSources & evidenceReaction notes

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 962
Water
Solvent
2×
HCID 312751,4-DioxaneSolvent

Procedure

The product of Example 432D (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-72d39934fce54413b64231f3a8cfc39a
Source dataset
uspto-grants-2011_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07910595B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes