4-(1,3-二噁n-2-基)苯酚

4-(1,3-dioxolan-2-yl)phenol

2-(1,3-dithian-2-ylidene)-3-oxobutanoic acid

2-(1,3-dithian-2-ylidene)malonic acid

2,4-dichloro-3-(1,3-propylenedithio-methylene)-penta-1,4-diene