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.
A novel ring-opening reaction of methylenecyclopropanes with aromatic amines catalyzed by Lewis acids
作者:Min Shi、Yu Chen、Bo Xu、Jie Tang
DOI:10.1016/s0040-4039(02)01984-6
日期:2002.11
Methylenecyclopropanes (MCPs) can react with aromatic amines to give the corresponding homoallylic amines in good to high yields in the presence of Lewisacids. The substituents on the benzene ring of the MCPs or the aromatic amines can affect significantly the reaction rate.
Ring-Opening Reactions of Methylenecyclopropanes Promoted by Metal Halides
作者:Bo Xu、Min Shi
DOI:10.1021/ol034142k
日期:2003.5.1
The methylenecyclopropanes (MCPs) react with various metal chlorides or bromides to give the corresponding homoallylic chlorides or bromides in good yields. [reaction: see text]
Lewis Acid-Catalyzed Ring-Opening Reactions of Methylenecyclopropanes with Alcoholic or Acidic Nucleophiles
作者:Min Shi、Bo Xu
DOI:10.1021/ol0259544
日期:2002.6.1
[reaction: see text] Methylenecyclopropanes can react with various nucleophiles such as alcohols, phenols, carboxylic acids, and thiols to give the corresponding homoallylic esters or ethers in good yields with good stereoselectivities in the presence of Lewis acids.
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.