1-(三苯基膦)-2-戊酮

1-(4-methylphenyl)-2-(triphenylphosphoranylidene)ethanone

2,3,9,10-tetramethoxy-13-methylene-8,14-cycloberbine

1-(2,2-Dimethylpropyl)-4,5-dihydro-4,4-dimethyl-5-methylen-1H-1,2,3-triazol

(S)-(-)-2-ethenyl-1-ethoxycarbonylpyrrolidine