27980-52-5Relevant articles and documents
Synthesis of Cyclohexylidenexanthenes via the Wittig-Horner Reaction
Christie, Michael A.,Webb, Lee R.,Tickner, Ann M.
, p. 2802 - 2804 (1982)
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Pd-Catalyzed Autotandem Reactions with N-Tosylhydrazones. Synthesis of Condensed Carbo- and Heterocycles by Formation of a C-C Single Bond and a C-C Double Bond on the Same Carbon Atom
Paraja, Miguel,Valdés, Carlos
, p. 2034 - 2037 (2017/04/27)
A new Pd-catalyzed autotandem reaction is introduced that consists of the cross-coupling of a benzyl bromide with a N-tosylhydrazone followed by an intramolecular Heck reaction with an aryl bromide. During the process, a single and a double C-C bond are formed on the same carbon atom. Two different arrangements for the reactive functional groups are possible, rendering great flexibility to the transformation. The same strategy led to 9-methylene-9H-fluorenes, 9-methylene-9H-xanthenes, 9-methylene-9,10-dihydroacridines, and also dihydropyrroloisoquinoline and dihydroindoloisoquinoline derivatives.
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.
