论文部分内容阅读
含氟烯醚类化合物的核磁共振谱规律性研究,文献很少报道。Raunio曾制备5个含氟烯醚类化合物,其核磁共振谱数据见表1.我们曾合成8个含氟烯醚类化合物,测得其核磁共振谱,数据见表2.本文根据这13个烯醚类化合物的核磁共振谱数据,讨论了取代基对化学位移和偶合常数的影响. (一)顺式或反式烷氧基对烯氢化学位移的影响(Effeot of cis-or trans-alkoxy on
The study of the regularity of NMR spectra of Fluoroalkenes is rarely reported in the literature. Raunio had prepared five fluoroalkene compounds, the NMR data in Table 1. We have synthesized eight fluoroalkene compounds measured NMR spectra, the data in Table 2. Based on these 13 The data of the NMR spectra of the enoleoids show the effects of substituents on the chemical shifts and coupling constants. (A) Effect of cis or trans alkoxy on the chemical shift of alkenes (Effeot of cis-or trans-alkoxy on