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Rare Earth Metal Boryl Complexes: Synthesis, Structure, and Insertion of a Carbodiimide and Carbon Monoxide
Author(s) -
Li Shihui,
Cheng Jianhua,
Chen Yanhui,
Nishiura Masayoshi,
Hou Zhaomin
Publication year - 2011
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201101107
Subject(s) - moiety , scandium , chemistry , carbodiimide , nucleophile , carbon monoxide , rare earth , ketene , stereochemistry , medicinal chemistry , combinatorial chemistry , polymer chemistry , organic chemistry , mineralogy , catalysis
Among the first of their kind : Scandium boryl complex 1 and its Gd analogue were prepared by reaction of a boryl lithium compound with [Ln(CH 2 SiMe 3 ) 2 (THF) x ][BPh 4 ] (Ln=Sc, Gd). Reaction of 1 with N , N ′‐diisopropylcarbodiimide gave bis(amidinate) complex 2 , which affords 3 by double CO insertion into the ScB bond, nucleophilic addition of an amidinate, and migration of the SiMe 3 to the resulting ketene moiety (see scheme).
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