3-methyl-2,3-dihydrodispiro[benzo[f]thiochromene-1,2'-thiirane-3',9''-thioxanthene] 在
三苯基膦 作用下,
以
对二甲苯 为溶剂,
生成 (M)-9-[(3S)-3-methyl-2,3-dihydro-1H-benzo[f]thiochromen-1-ylidene]-9H-thioxanthene 、 (R)-3-Methyl-1-thioxanthen-9-ylidene-2,3-dihydro-1H-benzo[f]thiochromene 、 (M)-9-[(3S)-3-methyl-2,3-dihydro-1H-benzo[f]thiochromen-1-ylidene]-9H-thioxanthene 、 3-methyl-1-thioxanthen-9-ylidene-2,3-dihydro-1
H-benzo[
f]thiochromene