In this work, cascade cyclizations of vinyl sulfonium salts with either indolyl chalcones or ortho‐amino trifluoroacetophenones are described. This protocol enables the assembly of fused 2,3‐dihyro‐1H‐pyrrolo[1,2‐a]indoles and fused tetrahydroquinolines containing a CF₃‐substituted tetrasubstituted carbon stereocenters.
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Zhu et al. (2024) studied this question.
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