5-methylidene-1,3-thiazolidine-2-thione

N-prop-2-ynyl-6-[(2,2,2-trifluoroacetyl)amino]hexanamide

1,1-diphenyl-3-(prop-2-ynyl)urea

1-(N,N-bis(trimethylsilyl)amino)-3-trimethylsilylprop-2-yne