Q10E - Organic Chemistry (Mcmurry)

Question

Look at the structures of Vestenamer and Norsorex and show how they might be made by olefin metathesis polymerization.

Step-by-Step Solution

Answer

The structure of Vestenamer followed as:

The structure of Norsorex followed as:

Step 1: ADMET polymerisation

ADMET polymerization stands for the acyclic diene metathesis polymerization which leads to the formation of the polymer with the replacement of the functional group and ethylene is formed as the by-product and to remove the ethylene other methods are also used.

Vestenemar formation takes place by the ADMET polymerization of the 1,9- decadiene and the homopolymerization is occurs because only 1 monomer is used as followed:

Step 2: ROMP polymerization

ROMP stands for the ring-opening metathesis polymerization that is this cyclic ring is opened by the polymerization and led to the chain-growth polymerization. It is an olefin metathesis reaction.

Vestenemar is also synthesis by the ROMP polymerization by polymerization of cyclodecaene as shown below:

Step 3: ROMP polymerization

ROMP stands for the ring-opening metathesis polymerization that is this cyclic ring is opened by the polymerization and led to the chain-growth polymerization. It is an olefin metathesis reaction.

Norsorex is also synthesis by the ROMP polymerization by polymerization of norbornene as shown below: