Merging alkenyl C–H activation with the ring-opening of 1,2-oxazetidines: ruthenium-catalyzed aminomethylation of enamides
作者:Song Li、Qi-Chao Shan、Lu-Min Hu、Xue-Qing Ma、Xu-Hong Hu
DOI:10.1039/d0cc03081c
日期:——
1,2-Oxazetidines have been utilized as formaldimine precursors for the direct aminomethylation of enamides under a Ru(II) species. By merging alkenyl C–Hactivation with ring-opening of 1,2-oxazetidines, this efficient protocol provides a facile and novel approach to synthesize Z-selective aminomethyl substituted enamides. Furthermore, two exemplified synthetic elaborations highlight the potential
Direct Enamido C(sp<sup>2</sup>)−H Diphosphorylation Enabled by a PCET‐Triggered Double Radical Relay: Access to<i>gem</i>‐Bisphosphonates
作者:Hao‐Qiang Cao、Hao‐Nan Liu、Zhe‐Yuan Liu、Bao‐Kun Qiao、Fa‐Guang Zhang、Jun‐An Ma
DOI:10.1002/chem.202000517
日期:2020.4.24
electron-transfer (PCET)-triggered enamidoC(sp2 )-Hdiphosphorylation. This reaction represents a rare example of realizing the challenging double C-P bond formation at a single carbon atom, thus providing facile access to a broad variety of structurally diverse bisphosphonates from simple enamides under silver-mediated conditions. Initial mechanistic studies demonstrated that the diphosphorylation involves