Induction of Chirotopicity in the Self-Assembly Process of Heterocuprates: Structural and Stereochemical Aspects of Neutral CuLi<sub>2</sub>BrAryl<sub>2</sub> Aggregates
作者:Claudia M. P. Kronenburg、Catelijne H. M. Amijs、Johann T. B. H. Jastrzebski、Martin Lutz、Anthony L. Spek、Gerard van Koten
DOI:10.1021/om0204540
日期:2002.10.1
investigation of the structure of corresponding 2:1 cyanocuprates in solution. Reactions of both 1 and 2 with excess CuBr results in the formation of mixed (C∧N∧N‘)Cu−CuBr aggregates of formula [Cu3Br(C∧N∧N‘)2] and [Cu4Br2(C∧N∧N‘)2], respectively. Interestingly, multinuclear NMR spectra of 3a and 3b are similar and show only one resonance pattern for the aryl ligands, which resembles that of 1 and 2 in solution
的自组装反应中的邻-二胺螯合型[李(C∧N∧N')]的芳基锂二聚体2与1个当量的CuBr导致选择性形成的杂铜酸盐1,2,图3a和3b中,分别都具有[CuLi 2 Br(C∧N∧N')2 ]化学计量(C∧N∧N'= Ar,[C 6 H 4(CH 2 N(Me)CH 2 CH 2 NMe 2)-2)-(1);萘,[1-C 10 H 6(CH 2 N(Me)CH 2CH 2 NMe 2)-2] -(2); (R)-Ar,(R)-[C 6 H 4(CH(Me)N(Me)CH 2 CH 2 NMe 2)-2] -(3a);或rac -Ar,rac- [C 6 H 4(CH(Me)N(Me)CH 2 CH 2 NMe 2)-2] -(3b))。固态的1和2的结构包含[(C∧N∧N')2 Cu]-和[李2 BR] +,其是通过分子内连接片段Ñ,Ñ所述的“-chelation邻二胺配体与锂,由此形成,整体