Cu(I) complexes containing a multidentate and conformationally flexible dibenzylidene acetone ligand (dbathiophos): application in catalytic alkene cyclopropanation.
Cu(I) complexes containing a multidentate and conformationally flexible dibenzylidene acetone ligand (dbathiophos): application in catalytic alkene cyclopropanation.
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含有多齿且构象灵活的二亚苄基丙酮配体 (dbathiophos) 的 Cu(I) 配合物：在催化烯烃环丙烷化中的应用。
DOI：
10.1039/c0dt01612h
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发表时间：
2011
影响因子：
4
通讯作者：
I. Fairlamb
中科院分区：
文献类型：
--
作者：
Amanda G. Jarvis;A. Whitwood;I. Fairlamb
报道了一种基于二亚甲基丙酮核结构的多齿构象柔性配体dbathihos(1)的合成和表征。配体1对阳离子和中性的铜(I)物种具有很高的亲和力。报道了三个独特的铜(I)配合物(4-6)，表明dbathihos的配体主链是半活性的，并且能够以不同的1，4-二烯-3-酮构象围绕铜(I)。配合物4和6均能有效地催化重氮乙酸乙酯与苯乙烯的环丙烷化反应，催化剂负载量较低。
The synthesis and characterisation of a multidentate conformationally flexible ligand based on the dibenzylidene acetone core structure, dbathiophos (1), is described. Ligand 1 has a high affinity for cationic and neutral Cu(I) species. Three unique Cu(I) complexes (4-6) are reported showing that the ligand backbone of dbathiophos is hemilabile, and able to adopt different 1,4-dien-3-one conformational geometries around Cu(I). Complexes 4 and 6 both effectively catalyse the cyclopropanation of styrene with ethyl diazoacetate at low catalyst loadings (1 mol% Cu).