Generation and trapping of phosphorus stabilized 4,5-ethylenedithio-1,3-dithiol-2-ide carbanions: Synthesis of ethylenedithio-1,3-dithiafulvalenes

Article abstract of DOI:10.1055/s-1991-26370

2-Dimethoxyphosphoryl-5,6-dihydro-1,3-dithiolo[4,5-b][1,4]-2-dithiin (8) and 2-triphenylphosphonio-5,6-dihydro-1,3-dithiolo-[4,5-b][1,4]dithiin tetrafluoroborate (9) have been obtained in four steps from 4,5-ethylenedithio-1,3-dithiole-2-thione (4) (ca. 7