%0 Journal Article %T Unearthing the Mechanism of Umpolung Amide Synthesis %J - %D 2019 %R https://doi.org/10.1016/j.chempr.2019.04.014 %X Umpolung amide synthesis (UmAS) is a new strategy for the construction of amide bonds and is complementary to conventional amide synthesis. However, its mechanistic understanding remains very limited. In this issue of Chem, Johnston and co-workers report the preparation and study of analogs of the tetrahedral intermediates in UmAS %U https://www.cell.com/chem/fulltext/S2451-9294(19)30172-X