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- Which type of reaction – addition, elimination, rearrangement, substitution,- best describes each of the following? OLi (а) MeLi + Me H (Б) Me2NOH + (c) to (d) H2O -ОН +Styrene derivatives such as A can be polymerized by way of cationic rather than radical intermediates. Cationic polymerization is an example of electrophilic addition to an alkene involving carbocations. a.) Draw a short segment of the polymer formed by the polymerization ofA.b.) Why does A react faster than styrene (C6H5CH=CH2) in a cationicpolymerization?What product is obtained from ring-opening metathesis polymerization of each of the following compounds? (Hint: In each case, the product is an unsaturated hydrocarbon with a high molecular weight.)
- List the following group of monomers in order of decreasing ability to undergo cationic polymerization.(d) Another variation on this type of polymer is used in hair gels. In these, the polymer chains are cross-linked by a compound known as pentaerythritol. но- OH но- OH pentaerythritol ( By what type of chemicat reaction are the cross-links in this polymer formed? (i) it is important that the gel should be easily washed out of hair What is it about the structure of the polymer that allows this to happen?11. Draw the repeating segment for the polymer formed from the reactions using the given monomer(s). (a) H₂C=CH₂ (b) CICH₂CH₂OCH₂CH₂CI+ (c) O=C=N- TICI4 (CH3CH₂)2AICI (d) HO- CH3 CH3 N. H -N=C=O + HOCH₂CH₂OH OH + & amine
- Draw the organic product that is expected to form when the following compound is oxidized under biological conditions. oxidation reduction 0 SH • You do not have to consider stereochemistry. You do not have to explicitly draw H atoms. If no reaction occurs, draw the organic starting material. / BO O-Sn [F ChemDoodle Previous MDraw the organic product of the following reaction. CH3 m-CICgH,CO;H • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • If the reaction produces a racemic mixture, just draw one stereoisomer. • If more than one product is possible, only draw the major product. opy asteWhich reaction—dehydration synthesis or hydrolysis—converts a polymer to its monomers? Which one convertsmonomers to a polymer? Explain your answer
- 2.) Draw out an oligomer of DP=5 for each of these polymers. Disregard stereochemistry (for now). tito n NH₂When certain cycloalkenes are used in metathesis reactions, ringopening metathesis polymerization (ROMP) occurs to form a highmolecular- weight polymer, as shown with cyclopentene as the starting material. The reaction is driven to completion by relief of strain in the cycloalkene.What products are formed by ring-opening metathesis polymerization of each alkene?Which of the following exists in mainly the enol tautomeric form? 요 H3C H3C CH3 i H3C IV || CH 3 EtO H3C ||| OEt OEt