作者:R. Filler、S.M. Naqvi
DOI:10.1016/s0040-4020(01)99342-1
日期:1963.1
The I.R. spectra of ethyl 4,4,4-trifluoroacetoacetate, ethyl 4,4-difluoroacetoacetate and ethyl 4-fluoroacetoacetate, their enol acetates and trifluoroacetates, and their copper chelates are compared with those of ethyl acetoacetate and its corresponding derivatives. The marked influence of neighboring fluorine atoms on the characteristics frequencies associated with such structures is noted. Related
将4,4,4-三氟乙酰乙酸乙酯,4,4-二氟乙酰乙酸乙酯和4-氟乙酰乙酸乙酯,其烯醇乙酸酯和三氟乙酸酯以及它们的铜螯合物的红外光谱与乙酰乙酸乙酯及其相应衍生物的红外光谱进行比较。注意到邻近的氟原子对与这种结构相关的特征频率的显着影响。还提供了有关β-二酮的烯醇乙酸酯的相关数据。由于氟取代,紫外光谱仅显示出轻微变化。