Lithium hydroxide, monohydrate → 4-[(7,8-Dihydro-8,8-dimethyl-5-(1,1-dimethylethyl)naphth-3-yl)ethynyl]benzoic acid

HRID 265785Notes

Reaction equation

HRID 265785 reaction equation
[CH3:1][C:2]1([CH3:29])[C:11]2[CH:10]=[CH:9][C:8]([C:12]#[C:13][C:14]3[CH:24]=[CH:23][C:17]([C:18]([O:20]CC)=[O:19])=[CH:16][CH:15]=3)=[CH:7][C:6]=2[C:5]([C:25]([CH3:28])([CH3:27])[CH3:26])=[CH:4][CH2:3]1.O[Li].O>C1COCC1.O>[CH3:1][C:2]1([CH3:29])[C:11]2[CH:10]=[CH:9][C:8]([C:12]#[C:13][C:14]3[CH:15]=[CH:16][C:17]([C:18]([OH:20])=[O:19])=[CH:23][CH:24]=3)=[CH:7][C:6]=2[C:5]([C:25]([CH3:28])([CH3:27])[CH3:26])=[CH:4][CH2:3]1

Participants

4

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 18314564Ethyl 4-[(7,8-dihydro-8,8-dimethyl-5-(1,1-dimethylethyl)naphth-3-yl)ethynyl]benzoate2×

Product 1

HCID 183145964-[(7,8-Dihydro-8,8-dimethyl-5-(1,1-dimethylethyl)naphth-3-yl)ethynyl]benzoic acid

Reagents, catalysts & solvents 1

HCID 21881883Oxolane--water (1/1)Solvent

Procedure

A solution of 24.0 mg (0.06 mmol) of ethyl 4-[(7,8-dihydro-8,8-dimethyl-5-(1,1-dimethylethyl)naphth-3-yl)ethynyl]benzoate (Compound 71) and 6.5 mg (0.16 mmol) of LiOH-H2O in 3 mL THF/water (3:1, v/v) was stirred overnight (22 hours) at room temperature. The reaction mixture was extracted with Et2O and the layers were separated. The aqueous layer was acidified with HCl (1M aqueous solution) and then extracted with EtOAc. The organic phase was dried over Na2SO4 and concentrated in vacuo to give the title compound as a colorless solid.

Workup

  1. extractionThe reaction mixture was extracted with Et2O
  2. customthe layers were separated
  3. extractionextracted with EtOAc
  4. dry with materialThe organic phase was dried over Na2SO4
  5. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-aee79b834ef14d37b5c676ea0b0e877c
Source dataset
uspto-grants-1997_07
Patent number
US05648514

Reaction notes

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