Reaktion #1051085

Reaktionsgleichung

thiophenol

Et3N

methyl-5,5-dimethyl-5,6-dihydro-naphthalen-8(7H)-one-2-carboxylate

methyl 5,5-dimethyl-5,6-dihydro-naphthalen-8(7H)-one-2-carboxylate

Compound E2

methyl 5,5-dimethyl-5,6-dihydro-naphthalen-8(7H)-one-2-carboxylate

H2O

→

title compound

Methyl-5,5-dimethyl-5,6-dihydro-8-(phenylthio) -naphthalene-2-carboxylate

Lösungsmittel

THF

THF

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONwas carefully added
2. 2
   Sonstigeto quench
3. 3
   Sonstigethe reaction
4. 4
   ExtraktionThe pruduct was extracted into Et2O
5. 5
   Waschenthe combined organic layers washed with saturated aqueous NaCl
6. 6
   Trocknendried over MgSO4
7. 7
   SonstigeRemoval of the solvents under reduced pressure

Vorschrift

To a solution of methyl-5,5-dimethyl-5,6-dihydro-naphthalen-8(7H)-one-2-carboxylate (Compound E2, 835.0 mg, 3.60 mmol) in 25.0 mL of THF at room temperature was added TiCl4 (670.0 mg, 3.55 mmol). Thereafter a solution of thiophenol (430.0 mg, 3.90 mmol) and Et3N (730.0 mg, 7.20 mmol) in 10 mL THF was added. The resulting brown mixture was stirred for 6 h before H2O was carefully added to quench the reaction. The pruduct was extracted into Et2O and the combined organic layers washed with saturated aqueous NaCl and dried over MgSO4. Removal of the solvents under reduced pressure afforded a solid from which the title compound was isolated as a yellow solid by column chromatography (5% EtOAc-hexanes).

Quelle