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The reaction of organomercurials 1, 2, or 3, LiPdCl3 and acetoxy-1, 3-dienes affords good yields of the corresponding 2, 3-dihydrobenzofurans, 3, 4-dihydroisocoumarins and α-methylene butyrolactones respectively with interesting regioselectivity.
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Larock et al. (1989) studied this question.
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