Mechanistic and Synthetic Investigations on the Dual Selenium-π-Acid/Photoredox Catalysis in the Context of the Aerobic Dehydrogenative Lactonization of Alkenoic Acids
作者:Stefan Ortgies、Rene Rieger、Katharina Rode、Konrad Koszinowski、Jonas Kind、Christina M. Thiele、Julia Rehbein、Alexander Breder
DOI:10.1021/acscatal.7b02729
日期:2017.11.3
efficiency and practicality, good functional group tolerance, and high sustainability, since ambient air and visible light are adequate for the clean conversion of alkenoicacids into their respective lactones. The title method has been used as a case study to elucidate the general mechanistic aspects of the dual selenium-π-acid/photoredox catalysis. On the basis of NMR spectroscopic, mass spectrometric, and
Samarium(II) Iodide-Mediated Intramolecular Conjugate Additions of α,β-Unsaturated Lactones
作者:Gary A. Molander、David J. St. Jean
DOI:10.1021/jo0255936
日期:2002.5.1
promote intramolecular conjugate additions of alkyl halides onto alpha,beta-unsaturated lactones. This process has been shown to be applicable to a number of alpha,beta-unsaturated lactones, including tetrasubstituted olefins, and has been demonstrated to be quite general for the formation of saturated bicyclic and tricyclic lactones. The method presented herein provides a mild, efficient process to form