78987-78-7Relevant academic research and scientific papers
A general stereoselective method for the synthesis of cyclopropanecarboxylates. A new version of the homologous Horner-Wadsworth- Emmons reaction
Krawczyk, Henryk,Wasek, Katarzyna,Kedzia, Jacek,Wojciechowski, Jakub,Wolf, Wojciech M.
, p. 308 - 318 (2008/09/21)
The synthesis of α-, β- and γ-substituted α-phosphono-γ-lactones was accomplished using different ring closure and ring homologation strategies. It was found that the lactones could be selectively transformed into the corresponding ethyl cyclopropanecarboxylates by treatment with sodium ethoxide in boiling THF. The reported reaction provides an attractive alternative to the classical homologous Horner-Wadsworth-Emmons approach to the construction of cyclopropanes with electron-withdrawing functionalities. This journal is The Royal Society of Chemistry.
Asymmetric cyclopropanation of alkenes catalyzed by a 'chiral wall' porphyrin
O'Malley,Kodadek
, p. 2445 - 2448 (2007/10/02)
The iodorhodium derivative of the 'chiral wall' porphyrin is shown to be an extremely active catalyst for the asymmetric cyclopropanation of alkenes by ethyl diazoacetate. Moderate enantioselectivities are observed. The reaction is unusual in that it prov
