49550-23-4Relevant academic research and scientific papers
Synthesis of 9-Fluorenylidenes via Pd-Catalyzed C-H Vinylation with Vinyl Bromides
Yang, Shuai,Zhang, Yanghui
supporting information, p. 7746 - 7750 (2021/10/12)
A facile and efficient approach for the synthesis of 9-fluorenylidenes has been developed via the palladium-catalyzed cross-coupling of 2-iodobiphenyls and vinyl bromides. The reaction involves the C-H activation of 2-iodobiphenyls and dual C-C bond formations. A range of 9-fluorenylidene derivatives, including diphenyldibenzofulvenes, can be synthesized with the reaction.
Facile synthesis of 1,2-diaryl- and triarylethenes with supported fluoride bases
Hellwinkel,Goke,Karle
, p. 973 - 978 (2007/10/02)
Differently substituted arenecarbaldehydes, mainly benzaldehydes, can be very efficiently condensed with a wide variety of methylbenzenes having an electron-withdrawing group in the para-position, as well as with fluorenes, xanthene, cyclopentadienes and indenes by using a standardized KF- or CsF-Al2O3 base system in dimethylformamide.
Sites of Successive Bromination of the Ambident Nucleophiles 2-Methoxy-, 2,4-Dimethoxy- and 2,4,6-Trimethoxy-benzylidenefluorenes and 2,2-Dimesityl-1-tert-butylethenol
Shainyan, Bagrat A.,Eventova, Irina,Rappoport, Zvi
, p. 1281 - 1286 (2007/10/02)
The reaction of the 2-methoxy- 2a, 2,4-dimethoxy- 2c and 2,4,6-trimethoxy-benzylidenefluorene 2d with bromine in AcOH has been investigated.With compound 2a the initial product is the α,9'-dibromide 3a which, with excess of bromine, gives the α,5,9'-tribr
