3-(1,3-benzothiazol-2-yl)chromen-2-one

2-[1-(cyanomethyl)pyrrolidin-2-ylidene]propanedinitrile

tert-butyl 3,3-dicyanopropanoate

2-(chloromethylidene)propanedinitrile

N-(tert-Butyl)-2-cyanoacetamide