Impact of Na- and K-C π-interactions on the structure and binding of M3(sol)n(BINOLate)3Ln catalysts

被引：25
|
作者：
Wooten, Alfred J. [1 ]
Carroll, Patrick J. [1 ]
Walsh, Patrick J. [1 ]
机构：
[1] Univ Penn, Dept Chem, P Roy & Diana T Vagelos Labs, Philadelphia, PA 19104 USA
来源：
ORGANIC LETTERS | 2007年 / 9卷 / 17期
关键词：
D O I：
10.1021/ol0713234
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
Shibasaki's heterobimetallic complexes M-3(THF)(n)(BINOLate)(3)Ln [M = Li, Na, K; Ln = lanthanide(III)] are among the most successful asymmetric Lewis acid catalysts. Why does M-3(THF)(n)(BINOLate)(3)Ln readily bind substrates when M = Li but not when M = Na or K? Structural studies herein indicate Na- and K-C cation-pi interactions and alkali metal radius may be more important than even lanthanide radius. Also reported is a novel polymeric [K-3(THF)(2)(BINOLate)(3)Yb](n) structure that provides the first evidence of interactions between M-3(THF)(n)(BINOLate)(3)Ln complexes.
引用
收藏
页码：3359 / 3362
页数：4
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