Abstract

Reaction of hydroxylated heteroarenes and acetylene in the presence of SnCl 4 and Bu 3 N (or Et 3 N) gives the corresponding ethenylated arenes. The reaction takes place at the neighboring position of the hydroxy group, andis applicable to quinolines, an isoquinoline, pyridines, and N-trifluoromethanesulfonylated indoles provided that the optimized conditions for the ethenylation and workup are employed.

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