Direct observation of simple fluorinated carbanions
作者:Andrew E. Bayliff、Martin R. Bryce、Richard D. Chambers、Raymond S. Matthews
DOI:10.1039/c39850001018
日期:——
Simple perfluorinated carbanions are generated and observed by 19F and 13C n.m.r. spectroscopy; curious low-field shifts are observed for sites adjacent to the charged centres.
生成简单的全氟化碳负离子,并通过19 F和13 C nmr光谱进行观察;在靠近收费中心的地点,观察到奇怪的低场频移。
Reactions involving fluoride ion. Part 44.1 Synthesis and chemistry of aromatics with bulky perfluoroalkyl substituents
作者:Richard D. Chambers、Corinne Magron、Graham Sandford
DOI:10.1039/a808700h
日期:——
carbanion 1a, generated by addition of fluorideion to perfluoroalkene 1, reacts efficiently with benzyl bromide and a range of related derivatives 3a–g and this provides methodology for the preparation of aromatic rings with large perfluoroalkyl substituents. Purification of the perfluoroalkylated products 4a–g was accomplished by selective extraction from the reaction medium by a perfluorocarbon fluid