Fenestranes and the flattening of tetrahedral carbon

Fenestrane in der Synthese: einzigartige und inspirierende Grundgerüste

“…Ähnliche tricyclische Strukturen, also Spiroalkane mit nur einer Brücke (Abbildung 3 e), sind folglich [ m.n.p ]Fenestrane. In Analogie zu einem Fenster mit vier Scheiben fehlt diesen Verbindungen mit nur drei kondensierten Ringen eine Fensterscheibe und sie können zerbrochene Fenster genannt werden 17a…”

Recent advances in 1,4-benzoquinone chemistry

“…This reaction has also been applied to the synthesis of a number of naturally occurring substances [330][331][332][333][334] and has attracted much attention from the mechanistic viewpoint. [335][336][337] Quinones occupy a very important position in the photoreactions with alkenes in which the conjugated C=C and C=O double bonds competitively take part in the [2+2] photocycloaddition to provide cyclobutane derivatives [338][339][340] and Paterno-Buchi adducts [341][342][343] respectively, depending on the identities of the quinone as well as the alkenes.…”

Fenestranes in Synthesis: Unique and Highly Inspiring Scaffolds

“…In the following sections, only recent results (since 2006) will be described. [17] However, in some cases the citation of earlier contributions is necessary to clarify these recent results. For the compounds that are not discussed here, the interested reader can refer to the compilation given in the Supporting Information.…”

“…Finally, a comprehensive overview of the recent synthetic efforts leading to fenestranes will complete this update. [17] In addition, a list of all fenestranes synthesized to date is available in the Supporting Information, including the compounds that were obtained earlier, which will not be discussed in detail herein. This compilation also includes the available information on bond angles, and is classified according to the respective synthetic key step.…”