2-Formylmethylene-5,6-dihydro-1,3-dithiolo<4,5-b><1,4>dithiin 、 5,6-Dihydro-1,3-dithiolo<4,5-b><1,4>dithiin-2-ium Tetrafluoroborate 以
四氢呋喃 为溶剂,
反应 0.5h,
以77%的产率得到(5,6-Dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-yl)-(5,6-dihydro-[1,3]dithiolo[4,5-b][1,4]dithiin-2-ylidene)-acetaldehyde