Highly fluorinated heterocycles. Part VI. Fluorination and rearrangement of 1,4-dithian
作者:J. Burdon、I. W. Parsons
DOI:10.1039/j39710000355
日期:——
1,4-Dithian has been fluorinated over potassium tetrafluorocobaltate(III) to give mainly the rearrangement products, polyfluoro(2-methyl-1,3-dithiolans)(five compounds, 59% of the fluorination mixture), together with the polyfluoro-1,4-dithians (seven compounds, 27% of the mixture). The rearrangements are believed to proceed via carbonium ions. The degree of fluorination is high compared to 1,4-dioxan;
1,4-二乙胺已在四氟钴酸钾(III)上进行氟化,主要得到重排产物多氟(2-甲基-1,3-二硫杂环戊烷)(5种化合物,占氟化混合物的59%),以及多氟- 1,4-二叠氮(七个化合物,占混合物的27%)。据信重排通过碳离子进行。与1,4-二恶烷相比,氟化程度高;这归因于环硫比环氧与氟化剂的配位更好。讨论了氟化路径。