Reaktion #1702073

Reaktionsgleichung

CAN

cerium ammonium nitrate

5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-methylnaphthalene

cerium ammonium nitrate

→

5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthaldehyde

Lösungsmittel

acetic acid

Reaktionsbedingungen

Aufarbeitung

1. 1
   Extraktionextracted by ethyl acetate
2. 2
   WaschenThe organic layer was washed by water
3. 3
   Trocknena saturated sodium hydrogen carbonate aq. solution and a saturated saline solution, dried over magnesium sulfate
4. 4
   Einengenconcentrated under reduced pressure
5. 5
   SonstigeThe crude product was purified by silica gel chromatography

Vorschrift

The synthesis process is as set forth in the chemical reaction formula below. The CAN in the reaction path stands for cerium ammonium nitrate. To 5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-methylnaphthalene (b) (202 mg, 1.00 mol) were added acetic acid (8.2 mL) and cerium ammonium nitrate (2.40 g, 4.37 mol) followed by stirring at 100° C. for 1 hour. The reaction solution was poured into ice water and extracted by ethyl acetate. The organic layer was washed by water, a saturated sodium hydrogen carbonate aq. solution and a saturated saline solution, dried over magnesium sulfate, and concentrated under reduced pressure. The crude product was purified by silica gel chromatography using hexane/ethyl acetate (15/1) as an elution solvent. The yield was 106 mg (49%).

Quelle