2''-methoxy-3-methyldispiro[2,3-dihydro-1H-benzo[f]thiochromene-1,2'-thiirane-3',9''-[9H]thioxanthene] 在
三苯基膦 作用下,
以
对二甲苯 为溶剂,
生成 (S)-1-[2-Methoxy-thioxanthen-(9Z)-ylidene]-3-methyl-2,3-dihydro-1H-benzo[f]thiochromene 、 (S)-1-[2-Methoxy-thioxanthen-(9E)-ylidene]-3-methyl-2,3-dihydro-1H-benzo[f]thiochromene 、 (S)-1-[2-Methoxy-thioxanthen-(9Z)-ylidene]-3-methyl-2,3-dihydro-1H-benzo[f]thiochromene 、 (S)-1-[2-Methoxy-thioxanthen-(9E)-ylidene]-3-methyl-2,3-dihydro-1H-benzo[f]thiochromene