2-[5-(4-[1,3]Dithiol-2-ylidene-cyclohex-2-enylidene)-[1,3]dithiolo[4,5-d][1,3]dithiol-2-ylidene]-[1,3]dithiole-4,5-dicarboxylic acid dimethyl ester 在
lithium bromide 作用下,
以
六甲基磷酰三胺 为溶剂,
以57%的产率得到2-(2-cyclohexenediylidene-1,3-dithiole)-5-(1,3-dithiol-2-ylidene)-1,3,4,6-tetrathiapentalene