Dearomative (3+2) cycloaddition of 2-substituted 3,5-dinitropyridines and N-methyl azomethine ylide
作者:Maxim A. Bastrakov、Alexey K. Fedorenko、Alexey M. Starosotnikov、Vadim V. Kachala、Svyatoslav A. Shevelev
DOI:10.1007/s10593-019-02421-9
日期:2019.1
1,3-Dipolar cycloaddition of various 2-substituted 3,5-dinitropyridines and unstabilized N-methyl azomethineylide has been studied. It was found that, depending on the nature of the substituent, the reaction results in addition of one or two equivalents of 1,3-dipole to the pyridine ring. Eventually, a convenient method for the synthesis of differently substituted heterocyclic systems containing one