Abstract
An unexpected Lewis acid-catalyzed [3+2] cycloaddition reaction of 1-substituted-3-arylvinylindoles was revealed when we studied the chemistry of donor-acceptor cyclobutanes and 1-substituted-3-arylvinylindoles. This method provides a simple, efficient route to synthesis of highly functionalized fused cyclopenta[b]indoles in good to excellent yields with high diastereoselectivity under mild reaction conditions.
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