Ethylparaben → Ethyl 4-[[(5,5-dimethyl-5,6-dihydro-8-(2-thienyl)-naphthalen-2-yl)carbonyl]oxy]-benzoate

HRID 1393

Reaction equation

HRID 1393 reaction equation
[CH3:1][C:2]1([CH3:20])[CH2:11][CH:10]=[C:9]([C:12]2[S:13][CH:14]=[CH:15][CH:16]=2)[C:8]2[CH:7]=[C:6]([C:17]([OH:19])=[O:18])[CH:5]=[CH:4][C:3]1=2.O[C:22]1[CH:32]=[CH:31][C:25]([C:26]([O:28][CH2:29][CH3:30])=[O:27])=[CH:24][CH:23]=1.Cl.CN(C)CCCN=C=NCC.CCOC(C)=O>CN(C=O)C>[CH3:1][C:2]1([CH3:20])[CH2:11][CH:10]=[C:9]([C:12]2[S:13][CH:14]=[CH:15][CH:16]=2)[C:8]2[CH:7]=[C:6]([C:17]([O:19][C:22]3[CH:32]=[CH:31][C:25]([C:26]([O:28][CH2:29][CH3:30])=[O:27])=[CH:24][CH:23]=3)=[O:18])[CH:5]=[CH:4][C:3]1=2

Participants

6

Reactant 4

HCID 8434EthylparabenHCID 8857Ethyl AcetateHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 107081975,5-Dimethyl-5,6-dihydro-8-(2-thienyl)-naphthalene-2-carboxylic acid2×

Product 1

HCID 22571506Ethyl 4-[[(5,5-dimethyl-5,6-dihydro-8-(2-thienyl)-naphthalen-2-yl)carbonyl]oxy]-benzoate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 5,5-dimethyl-5,6-dihydro-8-(2-thienyl)-naphthalene-2-carboxylic acid (Compound E6, 50.0 mg, 0.177 mmol), ethyl 4-hydroxybenzoate (38.2 mg, 0.230 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (44.0 mg, 0.230 mmol), and 4-N,N-dimethylaminopyridine (28.0 mg, 0.230 mmol) in 2.0 mL DMF was stirred overnight at room temperature. EtOAc (50 mL) was added and the solution washed with H2O, 5% HCl, saturated aqueous NaCO3, and saturated aqueous NaCl before being dried over MgSO4. Removal of the sovents under reduced pressure and column chromatography (10% EtOAc-hexanes) of the residual oil afforded the title compound as a colorless solid.

Workup

  1. washthe solution washed with H2O, 5% HCl, saturated aqueous NaCO3, and saturated aqueous NaCl
  2. dry with materialbefore being dried over MgSO4
  3. customRemoval of the sovents under reduced pressure and column chromatography (10% EtOAc-hexanes) of the residual oil

Sources & evidence

ORD record
ord-efe92404a0254b2b89ad1b766a802326
Source dataset
uspto-grants-1998_03
Patent number
US05723666

Linked notes

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