Lithium hydroxide, monohydrate → HCID 15870724, compound

HRID 613341Notes

Reaction equation

HRID 613341 reaction equation
[CH3:1][C:2]1([CH3:35])[CH2:11][CH:10]=[C:9]([C:12]2[CH:17]=[CH:16][C:15]([C:18]([CH3:21])([CH3:20])[CH3:19])=[CH:14][CH:13]=2)[C:8]2[CH:7]=[C:6]([C:22]#[C:23][C:24]3[CH:34]=[CH:33][C:27]([C:28]([O:30]CC)=[O:29])=[CH:26][CH:25]=3)[CH:5]=[CH:4][C:3]1=2.O[Li].O>C1COCC1.O>[CH3:1][C:2]1([CH3:35])[CH2:11][CH:10]=[C:9]([C:12]2[CH:17]=[CH:16][C:15]([C:18]([CH3:19])([CH3:20])[CH3:21])=[CH:14][CH:13]=2)[C:8]2[CH:7]=[C:6]([C:22]#[C:23][C:24]3[CH:34]=[CH:33][C:27]([C:28]([OH:30])=[O:29])=[CH:26][CH:25]=3)[CH:5]=[CH:4][C:3]1=2

Participants

4

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 22323755HCID 22323755, compound2×

Product 1

HCID 15870724HCID 15870724, compound

Reagents, catalysts & solvents 1

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

Procedure

A solution of 80.0 mg (0.173 mmol) of ethyl 4-[(5,6-dihydro-5,5-dimethyl-8-(4-(1,1-dimethylethyl)phenyl)-2-naphthalenyl)ethynyl]benzoate (Compound 6) and 18.1 mg (0.432 mmol) of LiOH-H2O in 6 ml of THF/water (3:1, v/v), was stirred overnight at room temperature. The reaction mixture was extracted with hexanes, and the remaining aqueous layer acidified with 1 M HCl, and then extracted with EtOAc. The combined organic layers were dried over Na2SO4 and concentrated in vacuo to give the title compound as a colorless solid. 1H NMR (d6-DMSO): δ 7.82 (2H, d, J=8.2 Hz), 7.44 (6H, m), 7.25 (2H, d, J=8.3 Hz), 7.02 (1H, s), 6.01 (1H, t, J=4.6 Hz), 2.32 (2H, d, J=4.7 Hz), 1.32 (9H, s), 1.29 (6H, s).

Workup

  1. extractionThe reaction mixture was extracted with hexanes
  2. extractionextracted with EtOAc
  3. dry with materialThe combined organic layers were dried over Na2SO4
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-c64366cf8bd248d694dd972637c1f26e
Source dataset
uspto-grants-1999_12
Patent number
US06008204

Reaction notes

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