Naphtho-anellated [5.6.5]- and [6.5.5.5]fenestranes
作者:Monika Seifert、Dietmar Kuck
DOI:10.1016/0040-4020(96)00788-0
日期:1996.10
Among these, a “broken” dibenzo,(naphtho-d,e)[5.6.5]fenestrane, 9, and two isomeric benzo,di(naphtho-a)[6.5.5.5]fenestrane ketones, 23 and 24, were obtained in good yields by using the two-fold cyclodehydrationroute via the corresponding (spiro-) 1,3-indandiols. Attempts to prepare fenestranes that contain more than one six-membered ring failed.