Quaternary 4-Amino-1,2,4-triazolium Salts: Crystal Structures of Ionic Liquids and N-Heterocyclic Carbene (NHC) Complexes
Quaternary 4-Amino-1,2,4-triazolium Salts: Crystal Structures of Ionic Liquids and N-Heterocyclic Carbene (NHC) Complexes
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4-氨基-1,2,4-三唑季盐：离子液体和 N-杂环卡宾 (NHC) 配合物的晶体结构
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
H. Schottenberger
中科院分区：
文献类型：
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作者：
A. Schwärzler;G. Laus;V. Kahlenberg;K. Wurst;T. Gelbrich;C. Kreutz;H. Kopacka;G. Bonn;H. Schottenberger
以4-氨基-1,2,4-三唑和4-氨基-3,5-二烷基-1,2,4-三唑（烷基= Me, Et）为原料，与硫酸二甲酯和硫酸二乙酯在常温下反应制备季铵盐。随后的离子分解得到六氟磷酸盐和双（三氟甲基磺酰基）亚胺作为结晶衍生物或离子液体。在100°C甲基化得到4-（二甲氨基）-1-甲基-1,2,4-三唑盐，这是一种新的碳配体的前体，被纳入Ag和Rh配合物中。还报道了5-溴-4-（二甲氨基）-1-甲基-1,2,4-六氟磷酸三唑的合成。摘要：4-氨基-1,2,4-三唑季铵盐：离子液体和n -杂环卡宾（NHC）配合物的晶体结构
Quaternary salts were prepared by reaction of 4-amino-1,2,4-triazole and 4-amino-3,5-dialkyl- 1,2,4-triazoles (alkyl = Me, Et) with dimethyl and diethyl sulfate at ambient temperature. Subsequent ion metathesis gave hexafluorophosphates and bis(trifluoromethylsulfonyl)imides as crystalline derivatives or ionic liquids.Methylation at 100 ◦C gave the 4-(dimethylamino)-1-methyl-1,2,4- triazolium salt, a precursor for a new carbene ligand which was incorporated into Ag and Rh complexes. The synthesis of 5-bromo-4-(dimethylamino)-1-methyl-1,2,4-triazolium hexafluorophosphate is also reported. Crystal structures of fourteen compounds have been determined by X-ray diffraction Graphical Abstract Quaternary 4-Amino-1,2,4-triazolium Salts: Crystal Structures of Ionic Liquids and N-Heterocyclic Carbene (NHC) Complexes