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Recent advances using cyclopropanols and cyclobutanols in ring-opening asymmetric synthesis
oleh: Hong Yan, Gregory S. Smith, Fen-Er Chen
Format: | Article |
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Diterbitkan: | KeAi Communications Co. Ltd. 2022-08-01 |
Deskripsi
Due to high ring strain energies, cyclopropanols and cyclobutanols have a strong tendency of breaking the endocyclic C–C bonds to participate in versatile organic transformations. With an inherent three-dimensional structure, cyclopropanols and cyclobutanols have the advantage of synthesizing linear or cyclic molecules with stereogenic centers via ring-opening asymmetric synthesis. There are three strategies for the ring-opening of cyclopropanols and cyclobutanols usually involved in asymmetric synthesis: 1) β-carbon elimination of metal alkoxide; 2) radical ring-opening; 3) ring-opening via semipinacol rearrangement. The present review has highlighted the progress developed in the last five years.