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- Following are the steps in the industrial synthesis of glycerin. Provide structures for all intermediate compounds (AD) and describe the type of mechanism by which each is formed.Treatment of W with CH3Li, followed by CH3I, affords compound Y(C7H14O) as the major product. Y shows a strong absorption in its IRspectrum at 1713 cm−1, and its 1H NMR spectrum is given below. (a)Propose a structure for Y. (b) Draw a stepwise mechanism for theconversion of W to Y.Give step-by-step mechanism for the following reaction
- Describe and explain each step in the mechanism providedTreatment of W with CH3Li, followed by CH3I, affords compound Y (C7H14O) as the major product. Y shows a strong absorption in its IR spectrum at 1713 cm−1, and its 1H NMR spectrum is given below. (a) Propose a structure for Y. (b) Draw a stepwise mechanism for the conversion of W to Y.Treatment of (HOCH,CH,CH,CH,),CO with acid forms a product of molecular formula C3H1,02 and a molecule of water. Draw the structure of the product and explain how it is formed.
- Consider the following structural formulas. OH H;C CH3 CH3 F G H (a) Which of the compounds F-l can easily be subjected to an elimination reaction? (b) Provide the reaction mechanism for all eliminations under (a).2-bromo-2-methylbutane undergoes hydrolysis reaction with water, H2O toform compound W. Compound X and compound Y are produced when 2-bromo-2-methylbutane undergoes elimination reaction with alcoholic ofsodium hydroxide, NaOH. (ii) What is the type of reaction involved in the formation of compound W? (iii) Identify the major product of the elimination reaction between compound Xand compound Y based on Zaitsev’s rule.Decane undergoes thermal cracking to produce compound D and compound E withequal number of carbon atoms. Compound E produces more soot when combustionreaction is carried out.(a) Draw all the possible structures for compound D.(b) Branched-chain compound E reacts with HBr to form major compound F.Compound F is optically active.(i) Outline the mechanism for the reaction.(ii) Draw the product formed when compound E undergoes chlorinationreaction.
- (b) Answer the following questions based on the compounds below. Jawab soalan berikut berdasarkan kepada sebatian di bawah. CI CI A в (i) Which compound has the higher boiling point? Explain. Sebatian manakah mempunyai takat didih yang lebih tinggi? Terangkan. (ii) Draw the SN2 mechanism for the reaction of compound A with sodium hydroxide, NaOH. Lukis mekanisma Sn2 bagi tindak balas antara sebatian A dengan natrium hidroksida, NaOH.(11) A OB C D A solution of which of the following alkyl halides in methanol will be optically active to begin but slowly lose most or all of its optical activity when heated? H H Br H3CBr Br (B) (A) T Br (C) (D)The treatment of (CH3)2C = CHCH2Br with H2O forms B (molecular formula C5H10O) as one of the products. Determine the structure of B from its H NMR and IR spectra.