Journal of Organic Chemistry
Journal of Organic Chemistry
5 years ago

Synthesis of 2-Unsubstituted Pyrrolidines and Piperidines from Donor–Acceptor Cyclopropanes and Cyclobutanes: 1,3,5-Triazinanes as Surrogates for Formylimines

Synthesis of 2-Unsubstituted Pyrrolidines and Piperidines from Donor–Acceptor Cyclopropanes and Cyclobutanes: 1,3,5-Triazinanes as Surrogates for Formylimines
Peter G. Jones, Lennart K. B. Garve, Alexander Kreft, Daniel B. Werz
A synthetic procedure to access 2-unsubstituted pyrrolidines and piperidines is presented. In the presence of MgI2 as Lewis acid, donor–acceptor cyclopropanes or corresponding cyclobutanes were treated with 1,3,5-triazinanes, leading to the five- or six-membered ring systems under mild conditions in yields up to 93%. This protocol tolerates a great variety of functional groups and thus provides an efficient entry to this class of pyrrolidines and piperidines.

Publisher URL: http://dx.doi.org/10.1021/acs.joc.7b01631

DOI: 10.1021/acs.joc.7b01631

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