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(21) 3. Consider the Ring Opening Metathesis Polymerization method: the initiating system in ring opening metathesis...
ring-opening metathesis polymerization (ROMP) of the norbornene 7. a. Write chemical reactions for the ring-opening metathesis polymerization derivative shown below. MeO-
4. Draw the product of the following Grubbs Ring ring opening metathesis, where compound 29 is Grubb's catalyst. (4) CR 10 equiv. niwolontho 29 (xx mol %) HOV DCM, 22 °C
6a (6 pts) Under the right conditions, ring opening of epoxides can form a polymerization. Draw the structure of the formed polymer using polymer notation in the box, and show the mechanism of initation and addition of two monomers below the reaction scheme. NaOMe 2 mmol 44 mmol b. (1 point) with the stoichiometry indicated above, what would "n" be equal to in the polymer? / 13 pts
6. Cationic ring-opening polymerization of (S)-3- methyltetrahydrofuran with a catalytic amount of chlorosulfonic acid (HSO3CI) yields a low-molecular weight polymer chain. Draw a reasonable mechanism for the growth of this polymer; show at least 3 monomers reacting with each other. Explain why an SN2 or SN1 reaction mechanism is more likely. HSO3CI