5,6-dihydro-4-(3-thiono[1,2]dithiol-4-yl)-[1,2]dithiolo[3,4-b][1,4]thiazine-3-thione 、
1,4-bis(2-thienyl)but-2-yne-1,4-dione 以
甲苯 为溶剂,
反应 1.0h,
以73%的产率得到3,4-di(2-thienoyl)-6-[5,6-di(2-thienoyl)-4-{spiro(4,5-di(2-thienoyl)-1,3-dithiol-2-yl)}-thiopyran-5-yl]-7,8-dihydro-5-[spiro(4,5-di(2-thienoyl)-1,3-dithiol-2-yl)]thiopyrano[2,3-b][1,4]thiazine