Explain the history of Ring opening Polymerization of ϵ-Caprolactone. describe about background..
Explain the history of Ring opening Polymerization of ϵ-Caprolactone. describe about background..
Draw a simple mechanism for condensation polymerization and ring opening polymerization.
ring-opening metathesis polymerization (ROMP) of the norbornene 7. a. Write chemical reactions for the ring-opening metathesis polymerization derivative shown below. MeO-
(21) 3. Consider the Ring Opening Metathesis Polymerization method: the initiating system in ring opening metathesis polymerization reactions. ring opening metathesis polymerization reactions. (C) Formulate a detailed mechanism for the ring opening metathesis polymerization reaction. (d) What is the major polymer product formed in the reaction of cyclopentene with the WCI/AIEt catalyst system? (e) Formulate a detailed reaction pathway for the reaction of cyclopentene with MoCls/AlEts catalyst system and draw the structure of the polymer product. (1) What is the...
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
. .1 Write down the structure of the cyclic monomer, and describe the type of ring opening polymerization, that you would use to prepare these polymers: 2 d)
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
a. Is ring opening of the epoxide in cortisol regiospecific? b. Is ring opening of the epoxide in arene oxides stereospecific? What features of the molecule led you to your choice? (Explain in 5 words or less.)
In paragraph form, describe to a roommate with the chemistry background of a typical art history major the observations and results that explain the ions identified in each unknown solution. Write any compound names, formulas, and ions (including appropriate charge) correctly for full credit. 'Paragraph form' means complete sentences and correct spelling is expected.
transformation could be achieved by a conrotatory ring closure followed by a dsrotatory ring opening could be done in the opposite order to achieve the same results. Draw both pathways, induding the The two step eaction conditions (thermal or light) and the intermediates, then explain which choice might be better. 12 Give the products for the following reactions. heat hv Ring closure is usually favored, so explain why, in this case, ring opening is favored. heat hv b) consider them...
Describe and explain the background of ONC and Healthcare IT Legislation.