1,3-二硫杂环戊二烯-2-硫酮-4,5-二甲酸二甲酯   、                                                                                      
5-(8-[1,3]Dithiol-2-ylidene-4,4a,6,7,8,8a-hexahydro-1H-1,4-methano-naphthalen-5-ylidene)-[1,3]dithiolo[4,5-d][1,3]dithiol-2-one                                                                                                                                                              在
                                                                                                                                                                                 
三甲氧基磷                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                                                        以27%的产率得到2-[5-(8-[1,3]Dithiol-2-ylidene-4,4a,6,7,8,8a-hexahydro-1H-1,4-methano-naphthalen-5-ylidene)-[1,3]dithiolo[4,5-d][1,3]dithiol-2-ylidene]-[1,3]dithiole-4,5-dicarboxylic acid dimethyl ester