Synthesis of a Chiral <i>C</i><sub>2</sub>-Symmetric Sterically Hindered Pyrrolidine Nitroxide Radical via Combined Iterative Nucleophilic Additions and Intramolecular 1,3-Dipolar Cycloadditions to Cyclic Nitrones
作者:Denis A. Morozov、Igor A. Kirilyuk、Denis A. Komarov、Andrea Goti、Irina Yu. Bagryanskaya、Natalia V. Kuratieva、Igor A. Grigor’ev
DOI:10.1021/jo3019158
日期:2012.12.7
successfully synthesized starting from an l-tartaric derived nitrone. Starting from a pyrrolidine flanked by two methylene groups, complete quaternization of the two α-carbon atoms has been accomplished through iteration of completely regio- and stereoselective intramolecular cycloaddition reactions and organometallic additions to key nitrone intermediates, formed in turn by oxidation procedures. This