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The use of BINAP‐based palladium(0) catalysts in the reaction of 7‐methoxy‐1,2‐didehydronaphthalene ( 2 ) and dimethyl acetylenedicarboxylate (DMAD) affords non‐racemic 9,12‐dimethoxypentahelicene 1 with reasonable ee s, among other cycloaddition products. This is the first example of an enantioselective, metal‐catalyzed cycloaddition involving arynes.
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Caeiro et al. (2006) studied this question.
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