Conformationally restricted pyrrolidines by intramolecular [2+2] photocycloaddition reactions
作者:Diego A. Fort、Thomas J. Woltering、Matthias Nettekoven、Henner Knust、Thorsten Bach
DOI:10.1039/c3cc40757h
日期:——
Intramolecular [2+2] photocycloaddition reactions of diversely substituted N-Boc protected 4-(allylaminomethyl)-2(5H)-furanones resulted in rigid products (53–75%) with three spatially defined positions for further functionalisation.
Selective 1,2‐Hydroarylation(Alkenylation) of <i>gem</i>‐Difluoroalkenes to Access (−CF<sub>2</sub>H) Motifs
作者:Leroy Qi Hao Lin、Ángel Rentería‐Gómez、Robert T. Martin、Ying‐Qi Zhang、Kelvin Zhi Wei Ong、Adam B. Parris、Osvaldo Gutierrez、Ming Joo Koh
DOI:10.1002/anie.202317935
日期:2024.2.12
bulky NHC-nickel catalyst promoted site-selective hydroarylation(alkenylation) of gem-difluoroalkenes by coupling with organotriflates(bromides) and sodium 1-phenylethoxide as hydride source to furnish products containing CF2H-substituted carbon centers. Experimental and computational studies shed light on the non-radical mechanism and the metal alkoxide's role in facilitating the reaction.