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Unformatted text preview: TEST 2C Page 2/2 3c . (8) Show the expected product (s) if any , for each of the reactions shown below. OH OTs F-Cl-OH E2 conditions Br OH TsCl No reaction Cl OTs 4a . (6) MECHANISM. Draw a mechanism for the following reaction, showing all intermediates ( 1 mark ), all curly arrows describing electron movement ( 4 marks ) and all charges ( 1 mark ) (if applicable). OH, E2conditions I H I H OH-4b .(6) Use the appropriate chemical equations to show why ethoxide (EtOH, pKa 17) is capable of quantitatively deprotonating HCN (HCN pKa 9). ETOH + H2O ETO- + H3O + Ka 10 -17 Rxn 1 HCN + H2O -CN + H3O + Ka 10 -9 Rxn 2 Add Rxn 1-1 + Rxn 2 HCN + EtO- -CN + EtOH K 10 8 favourable!! 5. (6) Stereochemistry . Draw all structural isomers of C 4 H 10 O and indicate which isomers are chiral if any. Include ethers (ROR) and alcohols (ROH). OH OH OH O OH O O chiral...
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