4. Answer all parts (a)-(e). Answer parts (a) - (c) below concerning oxidation and reduction. (a) Draw and name the alde

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4 Answer All Parts A E Answer Parts A C Below Concerning Oxidation And Reduction A Draw And Name The Alde 1 (85.63 KiB) Viewed 38 times

4. Answer all parts (a)-(e). Answer parts (a) - (c) below concerning oxidation and reduction. (a) Draw and name the aldehyde, I, which is formed following oxidation of alcohol, H, with pyridinium chlorochromate (PCC). (3) K₂Cr₂O7 PCC J K OH OH (in acidic H then HCl(aq) H solution) (b) Reduction of aldehyde, I, generates alcohol, H, after an acidic work-up. Suggest an appropriate reagent, J, for this transformation. (3) (c) Use of potassium dichromate, as opposed to PCC, forms carboxylic acid, K, from H. Draw and provide and name for this carboxylic acid, K. (3) (d) One method for preparing alcohols is the acid-catalysed hydration of an alkene. Treatment of 1- butene in this manner gives 2-hydroxybutane, an isomer of H. Draw this isomer and explain, using an understanding of the reaction mechanism, why this reaction does not form H. (10) Certain types of alkenes exist as geometrical stereoisomers. Choosing a suitable alkene to illustrate your answer explain this type of stereoisomerism. (6)