期刊
JOURNAL OF ORGANOMETALLIC CHEMISTRY
卷 690, 期 24-25, 页码 5959-5972出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jorganchem.2005.07.115
关键词
imidazolium salts; Arduengo-carbenes; metal complexes; bio-organometallic chemistry; chiral ionic liquid
Treatment of the amino acid derivative Bz-His-OMe with excess n-propyl bromide gave the corresponding histidinium salt [Bz-His(npropyl)(2)-OMe+Br-]. It features a melting point of 39 degrees C and may serve as a useful readily available optically active ionic liquid. Its subsequent treatment with silver oxide gave the corresponding L-histidine derived chiral N-heterocyclic carbene complex [(carbene)(2)Ag (.) AgBr2]. Transmetallation by treatment with Pd(CH3CN)(2)Cl-2 or [Rh(cod)Cl]2 led to the formation of the respective chiral late metal imidazol-2-ylidene complexes [(carbene)(2)PdCl2] and [(carbene)RhCl(cod)], respectively. Four diastereomers of the square planar palladium system were observed. Due to the additional chirality center in the L-histidine-derived Arduengo-carbene ligand two diastereomers of the rhodium carbene complex were formed. (c) 2005 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据