Lithium Hydroxide → 2-Tert-butoxy-2-[7-carbamoyl-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-3-isoquinolyl]acetic acid

HRID 572505Notes

Reaction equation

HRID 572505 reaction equation
[C:1]([C:3]1[CH:12]=[C:11]2[C:6]([C:7]([C:25]3[CH:30]=[CH:29][C:28]([CH3:31])=[C:27]([CH3:32])[CH:26]=3)=[C:8]([CH:15]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])[C:16]([O:18]C)=[O:17])[N:9]([CH3:14])[C:10]2=[O:13])=[CH:5][CH:4]=1)#[N:2].[Li+].[OH-:34]>O1CCCC1.CO>[NH2:2][C:1]([C:3]1[CH:12]=[C:11]2[C:6]([C:7]([C:25]3[CH:30]=[CH:29][C:28]([CH3:31])=[C:27]([CH3:32])[CH:26]=3)=[C:8]([CH:15]([O:20][C:21]([CH3:24])([CH3:22])[CH3:23])[C:16]([OH:18])=[O:17])[N:9]([CH3:14])[C:10]2=[O:13])=[CH:5][CH:4]=1)=[O:34]

Participants

5

Reactant 2

HCID 3939Lithium Hydroxide2×HCID 68352905Methyl [7-cyano-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-1,2-dihydro-3-isoquinolinyl][(1,1-dimethylethyl)oxy]acetate

Product 1

HCID 683528282-Tert-butoxy-2-[7-carbamoyl-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-3-isoquinolyl]acetic acidYield 56.4%

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
50 °C

Procedure

A solution of methyl [7-cyano-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-1,2-dihydro-3-isoquinolinyl][(1,1-dimethylethyl)oxy]acetate (17 mg, 0.039 mmol) in tetrahydrofuran (THF) (0.600 mL) and methanol (0.6 mL) was treated with LiOH (0.118 mL, 0.236 mmol) and stirred at 50° C. for 2 hours. Additional LiOH (300 uL) was added and the reaction was stirred at 50° C. for 4 h, and then cooled to rt overnight. The mixture was concentrated and purified with reverse phase chromatography (20-100% MeCN/H2O-0.1% TFA, 12 min) to afford [7-(aminocarbonyl)-4-(3,4-dimethylphenyl)-2-methyl-1-oxo-1,2-dihydro-3-isoquinolinyl][(1,1-dimethylethyl)oxy]acetic acid (9.6 mg, 0.022 mmol, 56.0% yield) as white solid: 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 9.02 (s, 1 H), 8.22-8.10 (m, 1 H), 7.39-7.28 (m, 4 H), 7.25-7.15 (m, 1 H), 7.09-6.99 (m, 1 H), 5.39 (d, J=1.2 Hz, 1 H), 3.76 (s, 3 H), 2.38 (s, 3 H), 2.33 (s, 3 H), 1.08 (s, 4.5 H), 1.06 (s, 4.5 H); LCMS (m/z) ES+=437 (M+1).

Workup

  1. stirringthe reaction was stirred at 50° C. for 4 h
  2. temperaturecooled to rt overnight
  3. concentrationThe mixture was concentrated
  4. custompurified with reverse phase chromatography (20-100% MeCN/H2O-0.1% TFA, 12 min)

Sources & evidence

ORD record
ord-ffbec890dfb34d16b1f0d38dd42ca61f
Source dataset
uspto-grants-2015_05
Patent number
US09029391B2

Reaction notes

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