Reactions involving fluoride ion. Part 19. Observable perfluorocycloalkylanions
作者:Richard D. Chambers、Raymond S. Matthews、Graham Taylor、Richard L. Powell
DOI:10.1039/p19800000435
日期:——
Carbanions are generated by reaction of fluorideion with perfluorocycloalkene derivatives, e.g. perfluorobicyclobutylidene (3), and this anion is relatively unchanged over a range of temperature or on prolonged standing, as indicated by the 19F n.m.r. spectrum. Internal return by fluorideion to the same carbon atom is suggested to account for the 19F n.m.r. spectra of the ions. Trapping experiments
碳离子是通过氟离子与全氟环烯烃衍生物(例如)反应生成的。全氟双环丁烯(3),并且该阴离子在一定温度范围内或长时间放置后相对不变,如19 F nmr光谱所示。建议通过氟离子内部返回相同的碳原子来解释离子的19 F nmr光谱。用溴和氯进行的捕集实验为离子的结构提供了进一步的证据。