blue-sensitized photooxygenation of several α-cyclogeranyl derivatives affords the exocyclic allylic hydroperoxides in 94-99% regioselectivity, while the diastereoselectivity varies from 50-97% de in favor of the cis isomer, depending on the substituents. By contrast, the enereaction with N-phenyltriazol-inedione affords significantly different regioselectivity and diastereoselectivity.
几种 α-环香叶基衍生物的亚甲蓝敏化光氧化提供 94-99% 区域选择性的环外烯丙基氢过氧化物,而非对映选择性从 50-97% de 变化,有利于顺式异构体,具体取决于取代基。相比之下,烯与 N-苯基三唑-茚二酮的反应提供了显着不同的区域选择性和非对映选择性。
3-Substituted 1-vinyl-1-methylcyclohex-3-enes ? Precursors of tricyclic diterpenoids of the pimarane/rosane group
作者:V. A. Dragan、V. V. Veselovskii、E. D. Daeva、A. M. Moiseenkov
DOI:10.1007/bf00958567
日期:1991.4
The synthesis of 1-vinyl-1-methyl-3-chloromethylcyclohex-3-ene from 3-vinyl-3-methylcyclohexanone and the corresponding exomethylene derivative has been optimized and related allylsulfones prepared. By a standard combination of these compounds with the appropriate (cyclo)geranyl block synthones a series of regular functionalized diterpenoids has been prepared which are considered as likely precursors of the natural compounds indicated in the title.