Greta Utecht-Jarzyńska, Szymon Jarzyński and Marcin Jasiński
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Trapping in situ generated CF3-nitrile imines with maleimides under solvent-free mechanochemical conditions†
A series of trifluoromethylated pyrrolo[3,4-c]pyrazoles was obtained via mechanochemical (3 + 2)-cycloaddition of in situ generated trifluoroacetonitrile imines with maleimide and its N-aliphatic/aromatic analogues. The presented work demonstrated that the aforementioned 1,3-dipoles can be efficiently trapped with electron-deficient dipolarophiles under solvent-free ball-milling conditions.
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