Intramolecular dehydro Diels-Alder reactions of diarylacetylenes: Switching between benzo[b]- and benzo[c]fluorenones as products by controlling the rearrangement of cyclic allene intermediates
Thermal cyclization of 1-[2-(arylethynyl)phenyl] -3-trimethylsilylpropynones affords a mixture of benzo[b]fluorenones and benzo[c]fluorenones. The ratio of the two isomers can be efficiently varied between 100:0 and 0:100 by introducing substituents with
Rodri?guez, David,Marti?nez-Espero?n, Mari?a Fernanda,Navarro-Va?zquez, Armando,Castedo, Luis,Domi?nguez, Domingo,Saa?, Carlos
p. 3842 - 3848
(2007/10/03)
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