Abnormal Ozonolysis of Methylenebicyclo[m. n. 1]alkanes

  • TANAKA Juntato
    Department of Synthetic Chemistry, Faculty of Engineering, Shizuoka University
  • TAKABE Kunihiko
    Department of Synthetic Chemistry, Faculty of Engineering, Shizuoka University
  • KAWAKITA Masayuki
    Department of Synthetic Chemistry, Faculty of Engineering, Shizuoka University
  • ITO Masaaki
    Department of Synthetic Chemistry, Faculty of Engineering, Shizuoka University
  • KATAGIRI Takao
    Department of Synthetic Chemistry, Faculty of Engineering, Shizuoka University

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Other Title
  • テルペン類の反応 V  メチレンビシクロ〔m,n,1〕アルカン類の異常オゾン酸化

Abstract

Ozonolysis of d-longifolene [1], camphene [9], 8-pinene [17] and 1, 7, 7-trimethy1-2-methylenenorbornane [22] has been carefully examined. On ozonolysis of [1] and [22], abnormal oxidation products were obtained as the principal products. However, oxonolysis of [9] and [17] afforded mainly the corresponding ketones and the Baeyer-Villiger type oxidation products. These results indiacte that the steric hindrance caused by the bulky group at the C-7 position of these bicycloalkane systems is an important factor leading to the abnormal ozonolysis.

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