The domino effect: A novel, cationic, gold(I)-catalyzed [3+2], tandem bicyclization, which provides rapid, efficient, and diastereoselective access to highly substituted cyclopenta[c]furans from simple, readily available 2-(1-alkynyl)-2-alken-1-ones and 3-styrylindoles under mild conditions, is described (see scheme).
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Gao et al. (2011) studied this question.
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