Synthetic and Mechanistic Aspects on the Competition between C–H Insertion and Hydride Transfer in Copper-Mediated Transformations of α-Diazo-β-Keto Sulfones
作者:Anita Maguire、Catherine Slattery、Alan Ford、Kevin Eccles、Simon Lawrence
DOI:10.1055/s-0033-1340471
日期:——
Competition between C–Hinsertion and hydride transfer is reported for the copper-catalysedreactions of a range of phenyl-substituted α-diazo-β-keto sulfones. Control of chemoselectivity is possible by alteration of the electronic properties of the diazo substrate. The production of enantioenriched cyclopentanones (up to 89% ee), formed via C–Hinsertion, and alkylidene tetrahydrofurans (up to 43%