Tetrahydrofuran → Ethyl 4-[(5,6-dihydro-5,5-dimethyl-8-(4-hydroxyphenyl)-2-naphthalenyl)ethynyl]benzoate

HRID 324203Notes

Reaction equation

HRID 324203 reaction equation
[CH3:1][C:2]1([CH3:32])[CH2:11][CH:10]=[C:9]([C:12]2[CH:17]=[CH:16][C:15](C)=[CH:14][CH:13]=2)[C:8]2[CH:7]=[C:6]([C:19]#[C:20][C:21]3[CH:31]=[CH:30][C:24]([C:25]([O:27][CH2:28][CH3:29])=[O:26])=[CH:23][CH:22]=3)[CH:5]=[CH:4][C:3]1=2.[F-].C([N+](CCCC)(CCCC)CCCC)CCC.C1C[O:54]CC1>CCOC(C)=O>[CH3:1][C:2]1([CH3:32])[CH2:11][CH:10]=[C:9]([C:12]2[CH:13]=[CH:14][C:15]([OH:54])=[CH:16][CH:17]=2)[C:8]2[CH:7]=[C:6]([C:19]#[C:20][C:21]3[CH:31]=[CH:30][C:24]([C:25]([O:27][CH2:28][CH3:29])=[O:26])=[CH:23][CH:22]=3)[CH:5]=[CH:4][C:3]1=2

Participants

5

Reactant 3

HCID 8028TetrahydrofuranHCID 2724141Tetrabutylammonium FluorideHCID 11796412AGN 193109 Ethyl Ester2×

Product 1

HCID 22323760Ethyl 4-[(5,6-dihydro-5,5-dimethyl-8-(4-hydroxyphenyl)-2-naphthalenyl)ethynyl]benzoate

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

To a solution of ethyl 4-1(5,6-dihydro-5,5- dimethyl-8-(4-.((2,2-dimethylethyl)-dimethylsiloxy)phenyl)-2-naphthalenyl)ethynyl]benzoate (Compound 1)50.0 mg (0.095 mmol) in 1.0 ml of THF at room temperature was added 73.2 mg (0.29 ml, 0.29 mmol) of tetrabutylamonium fluoride (1 M solution in THF). After stirring overnight, the solution was diluted with EtOAc and washed with H2O and saturated aqueous NaCl, before being dried over MgSO4. Removal of the solvents under reduced pressure, followed by column chromatography (4:1, Hexanes:EtOAc) afforded the title compound as a colorless solid. 1H NMR (CDCl3): δ 7.98 (2H, d, J=8.2 Hz), 7.52 (2H, d, J=8.3 Hz), 7.41-7.20 (5H, m), 6.88 (2H, d, J=8.4 Hz), 5.96 (1H, t, J=4.5 Hz), 4.37 (2H, q, J=7.1 Hz), 2.34 (2H, d, J=4.5 Hz), 1.39 (3H, t, J=7.1 Hz), 1.34 (6H, s).

Workup

  1. washwashed with H2O and saturated aqueous NaCl
  2. dry with materialbefore being dried over MgSO4
  3. customRemoval of the solvents under reduced pressure

Sources & evidence

ORD record
ord-8cceaaec62844787ba2d38a9e3327212
Source dataset
uspto-grants-2001_04
Patent number
US06218128B1

Reaction notes

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