Pd(II)‐Catalyzed Asymmetric Addition of Arylboronic Acids to Aliphatic
<i>N</i>
‐Carbamoyl Hydrazones
作者:Saúl Alberca、Marta Velázquez、José Trujillo‐Sierra、Javier Iglesias‐Sigüenza、Rosario Fernández、José M. Lassaletta、David Monge
DOI:10.1002/adsc.202200430
日期:2022.7.19
ligands have been applied to 1,2 addition of arylboronic acids to aliphatic N-carbamoyl (Cbz) hydrazones, affording protected α-aryl monoalkylhydrazines with high enantioselectivities (37-99% ee). Subsequent removal of the benzyloxy carbonyl protectinggroup provides a direct entry to free monosubstituted hydrazines, key building blocks for the synthesis of appealing 1,2-diaza-heterocycles, aminoacid derived