Ring-Opening Reactions of MCPs with Sulfonamides Promoted by Metal Triflate Lewis Acids
作者:Yu Chen、Min Shi
DOI:10.1021/jo035233y
日期:2004.1.1
sulfonamides gives the corresponding pyrrolidine derivatives under the same conditions. Through deuterium-labeling experiments, we found that the reaction process is involved with the rearrangement of a cyclopropylcarbinyl cation and a nonclassic carboniumion.
Gold(I)-Catalyzed Domino Ring-Opening Ring-Closing Hydroamination of Methylenecyclopropanes (MCPs) with Sulfonamides: Facile Preparation of Pyrrolidine Derivatives
作者:Min Shi、Le-Ping Liu、Jie Tang
DOI:10.1021/ol0614830
日期:2006.8.1
Reaction of methylenecyclopropanes 1 with sulfonamides produces the corresponding pyrrolidine derivatives 3 in moderate to good yields under the catalysis of Au(I) via a domino ring-opening ring-closing hydroamination process.
A Rh(III)-Catalyzed Formal [4+1] Approach to Pyrrolidines from Unactivated Terminal Alkenes and Nitrene Sources
作者:Sumin Lee、Honghui Lei、Tomislav Rovis
DOI:10.1021/jacs.9b07012
日期:2019.8.14
formal [4+1] approach to pyrrolidines from readily available unactivated terminalalkenes 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