[reaction: see text] The tandem intermolecular enyne metathesis between 1-alkynes and cyclopentene is reported, providing 2-substituted 1,3-cycloheptadienes. The success of the intermolecular reaction hinges on an appropriate balance between cycloalkene ring strain and reactivity of the alkyne.
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Kulkarni et al. (2003) studied this question.
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