通过使用半夹心稀土金属络合物,如 {Me2Si(C5Me4)(NPh)}Y(CH2SiMe3)(THF)2,首次实现了末端炔烃与碳二亚胺的催化加成,这提供了一种直接的,原子经济路线到包含共轭 CC 三键的 N,N'-二取代丙脒,这是一种难以通过其他方式制备的新脒族。稀土金属脒物被证实是该过程中真正的催化物,从而首次证明脒单元虽然经常用作各种有机金属配合物的辅助配体,但本身可以参与催化反应。适当的条件。
Catalytic Addition of Terminal Alkynes to Carbodiimides by Half-Sandwich Rare Earth Metal Complexes
作者:Wen-Xiong Zhang、Masayoshi Nishiura、Zhaomin Hou
DOI:10.1021/ja0560027
日期:2005.12.1
addition of terminal alkynes to carbodiimides has been achieved for the first time by use of half-sandwich rareearthmetalcomplexes, such as Me2Si(C5Me4)(NPh)}Y(CH2SiMe3)(THF)2, which offers a straightforward, atom-economic route to the N,N'-disubstituted propiolamidines which contain a conjugated C-C triple bond, a new family of amidines which were difficult to prepare by other means. A rareearth metal
通过使用半夹心稀土金属络合物,如 Me2Si(C5Me4)(NPh)}Y(CH2SiMe3)(THF)2,首次实现了末端炔烃与碳二亚胺的催化加成,这提供了一种直接的,原子经济路线到包含共轭 CC 三键的 N,N'-二取代丙脒,这是一种难以通过其他方式制备的新脒族。稀土金属脒物被证实是该过程中真正的催化物,从而首次证明脒单元虽然经常用作各种有机金属配合物的辅助配体,但本身可以参与催化反应。适当的条件。