Synthesis and Radical Polymerization of Various 2-Cyclopropylacrylates
作者:Armin de Meijere、Viktor Bagutski、Frank Zeuner、Urs Karl Fischer、Volker Rheinberger、Norbert Moszner
DOI:10.1002/ejoc.200400132
日期:2004.9
spectrometry and elemental analysis. The radical homopolymerizations of 1a−n were carried out with 2,2′-azabisisobutyronitrile (AIBN) as initiator in chlorobenzene at 65 °C. The highest polymer yields were obtained in the polymerizations of 1f and 1h or 1k and 1l, i.e. from monomers with an annelated five- or six-membered ring. In the case of 1h and 1k, both the polymer yields (99 and 98%, respectively) and
Synthetic use of alpha-aminoalkyl radicals formed by single electron oxidation of amines is quite limited. Here we demonstrate addition of alpha-aminoalkyl radicals to electron-deficient alkenes by visible-light-mediated electron transfer using transition metal polypyridyl complexes as photocatalysts, via a sequential redox pathway.
Phosphine‐Catalyzed Enantioselective (3+2) Annulation of Vinylcyclopropanes with Imines for the Synthesis of Chiral Pyrrolidines
作者:Fuhao Zhang、Xuan Dai、Lei Dai、Wenrui Zheng、Wai‐Lun Chan、Xiaodong Tang、Xumu Zhang、Yixin Lu
DOI:10.1002/anie.202203212
日期:2022.6.13
building blocks in organic chemistry. In this study, the first phosphine-catalyzed enantioselective (3+2) annulationbetween vinylcyclopropanes and N-tosylaldimines was achieved, which led to the formation of a range of highly functionalized pyrrolidines in high yields with excellent diastereo- and enantioselectivities.