Bicyclic Pyrrolidines for Medicinal Chemistry via [3 + 2]-Cycloaddition
作者:Vladimir I. Savych、Vladimir L. Mykhalchuk、Pavlo V. Melnychuk、Andrii O. Isakov、Taras Savchuk、Vadim M. Timoshenko、Sergiy A. Siry、Sergiy O. Pavlenko、Dmytro V. Kovalenko、Oleksandr V. Hryshchuk、Vitalii A. Reznik、Bohdan A. Chalyk、Vladimir S. Yarmolchuk、Eduard B. Rusanov、Pavel K. Mykhailiuk
DOI:10.1021/acs.joc.1c01327
日期:2021.10.1
A general approach to bicyclic fused pyrrolidines via [3 + 2]-cycloaddition between nonstabilized azomethyne ylide and endocyclic electron-deficient alkenes was elaborated. “Push–pull” alkenes and CF3-alkenes did not react with the azomethyne ylide under the previously reported conditions, and we developed a superior protocol (LiF, 140 °C, no solvent). Among obtained products were medchem-relevant
Synthesis and Characterization of β-Trifluoromethyl-Substituted Pyrrolidines
作者:Vladimir S. Yarmolchuk、Oleg V. Shishkin、Viktoriia S. Starova、Olga A. Zaporozhets、Olga Kravchuk、Sergey Zozulya、Igor V. Komarov、Pavel K. Mykhailiuk
DOI:10.1002/ejoc.201300121
日期:2013.5
construction of a library of three isomeric/homologous β-trifluoromethyl-substitutedpyrrolidines is disclosed. All products were prepared in multigram quantities from a common precursor. The key synthetic step was a [3+2] cycloaddition reaction. The influence of the trifluoromethyl group on the physicochemical characteristics of the pyrrolidine fragment was studied.