Synthesis, properties and application of electronically-tuned tetraarylarsonium salts as phase transfer catalysts (PTC) for the synthesis of gem -difluorocyclopropanes
作者:Krzysztof Grudzień、Tymoteusz Basak、Michał Barbasiewicz、Tomasz M. Wojciechowski、Michał Fedoryński
DOI:10.1016/j.jfluchem.2017.03.014
日期:2017.5
Preparation of gem-difluorocyclopropane from α-methylstyrene and chlorodifluoromethane was investigated under basic two-phase conditions. Although simple tetraalkylammonium salts appeared uneffective as phase-transfer catalysts (PTC) for this purpose, tetraphenylarsonium chloride displayed moderate activity, and inspired studies of the phenomena. To improve its efficiency we synthesized set of electronically-tuned