Complexation Promoted Additions to <i>N</i>-Benzoyliminopyridinium Ylides. A Novel and Highly Regioselective Approach to Polysubstituted Piperidines
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Unprecedented regioselectivities were observed for the addition of different organometallic nucleophiles to N-benzoyliminopyridinium ylides. Even benzylic and branched aliphatic Grignard reagents, which usually give substantial amounts of 1,4-adducts, showed excellent 1,2-regioselectivities. The electronic nature of the pyridinium ylide is taken into account to explain these results.
创建时间：
2016-08-18
