Question

9. What is the major product of the following reaction? NaCl acetone low temperature a. 1 b, 2 c. 3 d. racemic mix of 2 and 3 10. What reagent would you use to carry out the following reaction? OH H a. H2SO4 b. H.CO. c. HIO d. PCC 11. Which compound would be the major product of the following elimination reaction? CHCHONa. ethanol a. 1 b. 2 c. 3 d. 4 12. What is the correct order of stability of the following radicals (more stable > less stable)? "CH, c. 3 > 21 d. 2 > 3> 1 a. 1 > 2>3 b. 2>1> 3

Answer 1

der of stability Stability ab le of order stable y - (2) wh of e stable y sta less the boliloing CH3 Which is coreet radicals (more CH3 (CH2 CH I 20 free radical y free radical 2 free radical - Order ok Stability CH3 CH3 Tess stable more stable Stability order in free radical – 30 free radical > 20 free radical > 1° rodical CH2 CH3 CH3 1 the 2 option 3 (d) is correct - tence 27371

which is reaction? the major produest of the pollowing Nach Aceton? low-temp. saWURDIT i (10 What reagent use following reaction ? Product carry out of to the OH Pcc. if alcohol ar salade O-croce 0. 11. Pec - (Pyridinium chrom chromate) It is a reagent in Synthesis organic used primarily Oxiclation for of alcohols to carbonyls 9+ oxidise bomary dulcohols to aldehydes and Secondary alcohol in Ketone. to which compound would be the major product of the following elimination reaction. A Causoma Bye thamal R ey product or duet I most of the dehydro halogenation reaction, the major broduet are the saytzepe you offenen Broduct. But most substitutes aulkene is not always the mor broduet. In some cases the major alkene product is the least substituted alkene. Elimination in which least substituted aulkene is the major product is known aus Hoffmann elimination. This is a reaction produces more of the less highly substituted alkene it is ollowing Hoffmanm reue. f. When base is bulky the leaving group is a g. When poor leaving group such as F, KRgandske 3. Steric hinderence at B. Carton and 4. When the alkyl halide contain one or more double bond. Des Hoffmann produces alkene