名称:
The Reactivity of Potassium Polyfluoroaryl-, Polyfluoroalkenyl-, and Perfluoroalkyltrifluoroborates and their Hydrocarbon Analogues towards Acids of Different Strength: A Systematic Study of the Hydrodeboration
摘要:
The hydrodeboration of the (fluoroorgano)trifluoroborates K [RFBF3] [R-F = C6F5, XCF=CF (X = F, cis- and trans-Cl, -C3F7O, cis-C2F5, trans-C4F9, -C4H9) and C6F13] and of the organotrifluoroborates K [RBF3] (R = C6H5, cis- and trans-C4H9CH=CH, C4H9CH=CH, C4H9 and C8H17) with CH3CO2H (100%), CF3CO2H (100%). aqueous HF and anhydrous HF was investigated. In the alkenyltrifluoroborates K [R'CF=CFBF3] the formal replacement of BF3 by a proton occurred stereo specifically under retention of the configuration. The F-19 NMR spectra of K [RFBF3] in acids indicate strong interactions of the BF3 group with protons or acid molecules.