Alkali-metal-catalyzed addition of primary and secondary phosphines to carbodiimides. A general and efficient route to substituted phosphaguanidines
作者:Wen-Xiong Zhang、Masayoshi Nishiura、Zhaomin Hou
DOI:10.1039/b609198a
日期:——
Organo alkali metal compounds such as nBuLi and (Me3Si)2NK act as excellent catalyst precursors for the addition of phosphine P–H bonds to carbodiimides, offering a general and atom-economical route to substituted phosphaguanidines, with excellent tolerability to aromatic C–Br and C–Cl bonds.
Half-sandwich rare-earth metal tris(alkyl) ate complexes catalyzed phosphaguanylation reaction of phosphines with carbodiimides: an efficient synthesis of phosphaguanidines
作者:Wangyang Ma、Ling Xu、Wen-Xiong Zhang、Zhenfeng Xi
DOI:10.1039/c5nj01136a
日期:——
Half-sandwich Y/Li ate complex displays better catalytic activity for phosphaguanylation reaction of phosphines with carbodiimides than the neutral yttrium complexes.