allylic造句怎么写

We see the symmetry we have attributed to allylic particles on the basis of the resonance theory; the two ends of each of these molecules are equivalent.

An advantage of the new methods is the utilization of easily accessible allylic amine derivatives as monomer precursors.

The new methods allow a wide range of poly analogs to be obtained in few steps, as the allylic precursors are readily available.