Reactions of Ph2C3 dianion with alkyl thiocyanates or ethylene 1,2-dithiocyanate give 1,3-bis(alkylthio)allenes or tetrathiacyclic bisallene, respectively. Thermalreactions of 1,3-bis(benzylthio)allene and tetrathiacyclic bisallene afford 2,3,5-triphenylthiophene and 1,2-bismethylidene cyclobutane derivatives, respectively.
Ph 2 C 3二价阴离子与烷基硫氰酸酯或1,2-二硫氰酸乙烯的反应分别得到1,3-双(烷硫基)亚芳基或四硫代双亚芳基。1,3-双(苄硫基)丙二烯和四硫代双环丙二烯的热反应分别得到2,3,5-三苯噻吩和1,2-双亚甲基环丁烷衍生物。