The front cover image, p
rovided by Svetlana Tšupova, illust
rates the gold-catalyzed conve
rsion of allyl- o
r benzyl-substituted diyne systems to fluo
rene de
rivatives. In a dual gold-catalyzed p
rocess, symbolized on the cove
r as the wo
rk of the Sun-god, gold vinylidenes a
re fo
rmed and selectively unde
rgo fo
rmal inse
rtion into a C(
sp2)–H bond of the unsatu
rated side chain. In some cases, isome
rization takes place leading to the a
romatic system of the final fluo
rene p
roducts. Details can be found in the communication on pages 225–
233 (J. Buche
r, T. Wu
rm, S. Taschinski, E. Sachs, D. Ascough, M. Rudolph, F. Rominge
r, A. S. K. Hashmi,
Adv. Synth. Catal.
2017,
359, 225–
233; DOI:
ref="https://doi.org/10.1002/adsc.201600987" rel="references:https://doi.org/10.1002/adsc.201600987">10.1002/adsc.201600987).