Reaktion #45867

Reaktionsgleichung

7-(1-allylbut-3-enyl)-2-cyclopropyl-5-methyl-6-phenyl-1,3-benzoxazole-4-carbonitrile

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compound

Ausbeute 76.0%

7-(Cyclopent-3-enyl)-2-cyclopropyl-5-methyl-6-phenyl-1,3-benzoxazole-4-carbonitrile

Ausbeute 76.0%

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturAfter cooling to room temperature
2. 2
   Sonstigethe solvent was evaporated away under reduced pressure
3. 3
   SonstigeThe residue was purified by middle-pressure liquid chromatography (eluent, n-hexane

Vorschrift

At room temperature, Grubbs catalyst second generation (92 mg, 0.11 mol) was added to a solution of 7-(1-allylbut-3-enyl)-2-cyclopropyl-5-methyl-6-phenyl-1,3-benzoxazole-4-carbonitrile (I-299) (400 mg, 1.09 mmol) dissolved in dichloromethane; (108 ml). Under nitrogen atmosphere, the solution was stirred at 50° C. for 3.5 hours. After cooling to room temperature, the solvent was evaporated away under reduced pressure. The residue was purified by middle-pressure liquid chromatography (eluent, n-hexane:ethyl acetate=9:1, v/v) to obtain the entitled compound (282 mg, 76%) as a white solid.

Quelle