Ring Opening Olefin Metathesis

Ring Opening Olefin Metathesis-25
The reaction proceeds simultaneously in two directions.One of them provides two polymer chains with the active ruthenium on both.

The reaction proceeds simultaneously in two directions.One of them provides two polymer chains with the active ruthenium on both.

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During the intermolecular transferring, the active metal-carbene complex located at the end of one macromolecule interacts with the double bond of the adjoined macromolecule, which leads to fragment exchange process.

As well as in any other type of polymerization, ROMP can be divided into several stages (Scheme 1).

The initiation begins with the coordination of the cycloolefins’ double bond with the metal-carbene complex.

Living polymerization with ring opening metathesis is terminated by removing the transition metal from the end of the growing chain and its further deactivation.

Deactivation in this case involves the formation of a complex unable to initiate polymerization [5].

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