A new synthetic route to unsymmetrical 9-arylxanthenes
A. facile and general three-step synthetic route towards unsymmetrical 9-arylxanthenes was developed. The reaction sequence involves nucleophilic substitution of commercially available 2-fluorobenzaldehydes with arenoxides, Grignard reaction of the resulting 2-arenoxybenzaldehydes with arylmagnesium bromides, followed by FeCl3-catalyzed intramolecular diarylmethylation of the resulting carbinols, This strategy was extended to access symmetrical as well as unsymmetrical 9-arylthioxanthenes.
Das, Sajal Kumar,Singh, Ritesh,Panda, Gautam
scheme or table
p. 4757 - 4761
(2010/02/28)
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