Catalytic Addition of Secondary Amines to Carbodiimides by a Half-Sandwich Yttrium Complex: An Efficient Route to N,N′,N′′,N′′-Tetrasubstituted Guanidines
作者:Zhaomin Hou、Wen-Xiong Zhang、Masayoshi Nishiura
DOI:10.1055/s-2006-939081
日期:——
The catalytic addition of secondary amines to carbodiimides has been achieved by use of an yttrium half-sandwich alkyl complex (Me2Si(C5Me4)(NPh)(Y(CH 2 SiMe 3 )(THF) 2 , which offers a straightforward, atom-economical route to tetrasubstituted guanidines. An yttrium guanidinate species has been confirmed to be a true catalytic species in this reaction.