Strained aromatic systems. Synthesis of cyclopropabenzocyclobutenes, cyclopropanaphthocylobutenes, and related compounds

~92%

~65%

~43%

~%

~%

~39%

~%

~92%

~40%

~61%

~%

~%

~%

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~%

~58%

~%

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~68%

~79%

~84%

~39%

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