presented. The properties of pyrazolium salts as well as of two types of heterocyclic mesomeric betaines, the pseudo-cross-conjugated mesomeric betaine pyrazolium-3- carboxylate and its cross-conjugated analog pyrazolium-4-carboxylate, are compared. Graphical Abstract Synthesis of a Pyrazol-3-ylidene Palladium Complex, Pyrazolium Salts and Mesomeric Betaines of Pyrazole as N-Heterocyclic Carbene Precursors
描述了 pyrazol-3-ylidene
钯配合物的合成,并介绍了单晶 X 射线衍射研究的结果。比较了
吡唑鎓盐以及两种类型的杂环内消旋
甜菜碱、拟交叉共轭内消旋
甜菜碱吡唑鎓-3-
羧酸盐及其交叉共轭类似物
吡唑鎓-4-
羧酸盐的性质。作为 N-杂环卡宾前体的
吡唑-3-亚基
钯配合物、
吡唑盐和
吡唑的内消旋
甜菜碱的图形摘要合成