We have developed a formal [4+1] approach to pyrrolidines from readily available unactivated terminal alkenes as 4-carbon partners. The reaction provides a rapid construction of various pyrrolidine containing structures, especially for the diastereoselective synthesis of spiro-pyrrolidines. Mechanistic investigation suggests a Rh(III)-catalyzed intermolecular aziridination of the alkene and subsequent acid-promoted ring expansion for the pyrrolidine formation.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7428074 | PMC |
http://dx.doi.org/10.1021/jacs.9b07012 | DOI Listing |
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