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

참여 물질

반응 조건

반응 단계

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.

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