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- (a) Answer the following questions based on the reaction scheme below. Jawab soalan berikut berdasarkan rajah tindak balas di bawah. H,SO, 180°C R OH+ Δ U NH, (i) State reagent Q. Nyatakan reagen Q. (ii) Draw the structural formula for compounds R, T, U and W. Lukiskan formula struktur bagi sebatian R, T, U dan W. PCI,Paragraph Styles Edi 7. Answer ALL parts of the question (a) Predict the organic products formed when 3-methoxybenzaldehyde is heated with formaldehyde in the presence of concentrated sodium hydroxide (after final acidification with HCI) (Scheme Q7a): 1. NaOH, heat MeO, H. H. 2. HCI Aromatic (Scheme Q7a) (b) Give the full name of this reaction. (c) (1) Identify the electrophile in the hydride transfer step to form the aromatic product. (ii) Draw a mechanism for the reduction of this electrophile.Predict the organic product of the reaction of 2-butene with each reagent. You do not have to consider stereochemistry. In cases where there is more than one answer, just draw one. • Omit lone pairs and radical electrons from your answer. (a) Br₂ (b) H₂O (H₂SO4) ** ***** 24 Sn [F ChemDoodle 好 Sn [F
- An alkene having the molecular formula C11H20 is treated sequentially with ozone (O3) and zinc/acetic acid to give the product/s shown. CH;CH2ČCH,CH3 Draw a structural formula for the alkene. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. In cases where there is more than one answer, just draw one. C opy aste ChemDoodle11.; (a) Similar to alkanes, hydrogen gas can undergo radical bromination according to the reaction below. Propose a chain-reaction mechanism for this reaction, including an initiation step, propagation steps, and two plausible termination steps. The homolytic bond dissociation energy for Br-Br is 46 kcal·mole', for H-Br is 88 kcal'mole and for H-H is 104 kcal'mole'. hv H-H + Br-Br 2 H-Br (b) Calculate the overall AH for the above propagation steps (show all work).Bromine reacts with alkenes in methanol according to the equation: - When this reaction was carried out with 4-tert-butylcyclohexene, only one isomer was formed with the molecular formula C12H23BrO (80% yield). Which of the following is the structure more reasonable for this compound?. Explain your reasoning through acorresponding mechanism.
- 6.) Predict the product of the following chemical reactions and state where the product (waste) sk waste should be disposed: Example: OH 1. NaBH4, ethanol CH;CH,CH,CH CH;CH,CH,CH 2. H3O* H Butanal 1-Butanol Waste: G704 (Non-halogenated organic solvents) 1. NaBH4, ethanol a.) Cyclohexanecarbaldehyde 2. H3O* b.) Sodium Flouride + 3-iodo-3-methylpentane (hint: substitution or eliminatic 2/3 H3O* c.) Benzoic acid + Phenol РС d.) 3-pentanol H2CrO4 e.) Cyclohexylmethanol6) Provide the major organic product of the following. x 1. Mg, Et₂0 2. CO₂ 3. H₂O* CH₂CH₂ CH₂ O=O Br OCH₂CH3 1. 2 CH₂MgCl 2. H₂O, H* .H 1. CH₂CH₂C=C 2. H₂O, H* ~6. Some reactions of 2-iodopropane are shown below: reaction 1 CH;CHCH; reaction 3 (CH3),CHOCH3 CH;CH=CH, reaction 2 (CH3)½CHNH, i) For each of the reactions shown, name the reagent used and state the condition of reaction. ii) State the type of mechanism of hydrolysis reaction in 2-iodopropane. iii) Write the mechanism involve in the reaction
- IV. Complete the equations for the following reactions. Show all organic alkene products form, mechanism, indicate the major product and the rule Ş(CH3)2 NaSH HEAT OH™ HEATThe rate law for addition of Br2 to an alkene is first orderin Br2 and first order in the alkene. Does this informationsuggest that the mechanism of addition of Br2 to analkene proceeds in the same manner as for addition of HBr?Explain.Alcohols are important for organic synthesis, especially in situations involving alkenes. The alcohol might be the desired product, or the OH group might be transformed into another functional group via halogenation, oxidation, or perhaps conversion to a sulfonic ester derivative. Formation of an alcohol from an alkene is particularly powerful because conditions can be chosen to produce either the Markovnikov or non-Markovnikov product from an unsymmetrical alkene. Using your reaction roadmap as a guide, show how to convert 4-methyl-1-pentene into 5-methylhexanenitrile. You must use 4-methyl-1-pentene and sodium cyanide as the source of all carbon atoms in the target molecule. Show all reagents needed and all molecules synthesized along the way.