Pd(II)-Catalyzed Phosphorylation of Enamido C(sp<sup>2</sup>
)-H Bonds: A General Route to β-Amido-vinylphosphonates
作者:Baokun Qiao、Hao-Qiang Cao、Yin-Jun Huang、Yue Zhang、Jing Nie、Fa-Guang Zhang、Jun-An Ma
DOI:10.1002/cjoc.201800262
日期:2018.9
the synthesis of C–P bonds has been an important focus of research. We herein report a Pd‐catalyzed enamidoC(sp2)–Hphosphorylation for direct construction of C–P bonds under simple and convenient conditions without the need for additional ligands or directing groups. The present reaction can tolerate a wide range of functional groups, and furnish a variety of phosphorylation products including t
Highly enantioselective direct amination of enamides catalyzed by chiral nonracemic calcium bis(phosphate) complex 3g afforded optically active 1,2-hydrazinoimines 4. Following a subsequent in situ hydrolysis or reduction, 2-hydrazinoketones 5 or syn-1,2-disubstituted 1,2-diamines 6 were obtained in high yields and excellent enantiomeric excess.