作者:Wolfgang Kaim、Hans Bock、Pelham Hawker、Peter L. Timms
DOI:10.1039/c39800000577
日期:——
5-diene using potassium in dimeth-oxyethane proceeds in two steps: firstly, the acquisition of one electron yields the unstable radicalanion [FB(MeCCMe)2BF]·–, isoelectronic with durosemiquinone; and secondly the potassium film removes the fluorine substituents and the radicalanion [B(MeC-CMe)2B]·– is produced which is stable at room temperature and represents a novel heterocycle, tetramethyl-1,4-diborine