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A new efficient synthesis of indolo[3,2,1-jk]carbazoles by the palladium-catalyzed cyclization of N-(2-bromoaryl)carbazoles is described. The reaction involves intramolecular C–C bond formation, coupled with the cleavage of a C–X bond and a C–H bond on carbazole ring. Substitutions on N-aryl core with either electron-donating or electron-withdrawing groups are introduced, and different reaction factors...
A new procedure has been developed for constructing arylalkynes through cross-coupling of terminal alkynes with arylboronic acids catalyzed by a palladium-silver system under mild conditions.
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