Arynic condensation of ketone enolates. 17. New general access to benzocyclobutene derivatives

~81%

~%

~%

~43%

~45%

~45%

~%

~%

~71%

~81%

~%

~%

~69%

~%

~%

~%

~77%

~%

~%

~53%

~%

~%

~53%

~%

~%

~81%