What is the best choice of reagent(s) to perform the following transformation? HC-C=C-H (A) 1 mole of Br2 (B) 2 moles of Br₂ (C) 1 mole of HBr (D) 2 moles of HBr (A) 1 (B) 2 (C) 3 (D) 4 Br Bra hv HC What is the major organic product obtained from the following reaction? Br 1 میر ہا۔ پہلا Br 2 Br 3
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- Benzene is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by thecatalytic conversion of acetylene to benzene: 3C2 H2(g) ⇌ C6 H6(g). Which value of Kc would make this reactionmost useful commercially? Kc ≈ 0.01, Kc ≈ 1, or Kc ≈ 10. Explain your answerQ2. What are the products of the following reactions? Q3. 2-Bromopentane, when treated with alcoholic KOH yields a mixture of three alkenes A, B and C. Identify A, B and C. Which is predominant? Choose the best reagents from the list provided below for carrying out the following conversion. Match the reagent with the step number. HCl (aq), Zn(Hg) Br2, FeBr3 Na/NH3, -33 degrees C NBS, light KMnO4, H3O+ Mg metal, ether KOH, EtOH, heat
- What is the missing reagent needed to perform the following transformation (assume mildly acidic catalysis)? a) CH3OH b) CH3COOH c) H2O d) CH3OCH3Tunicates are marine animals that are called "sea squirts" because when they are taken out of water, they tend to contract and expel seawater. Lepadiformine is a cytotoxic agent (toxic to cells) isolated from a marine tunicate. During a recent synthesis of lepadiformine, the investigators observed the formation of an interesting by-product (3) while treating diol 1 with a reagent similar in function to PBr3 (J. Org. Chem. 2012, 77, 3390–3400):Please give a detailed stepwise mechanism for the following reactions of Q.1 and Q.2. All arrows, charges, intermediates, and resonance structures must be shown.
- A. In the synthesis of 1-bromobutane, what is the inorganic by-product left in the reaction flask following the distillation? Why was the bromoalkane the bottom layer in the separatory funnel? B. Predict the product when 1-methylcyclohexanol reacts with H2SO4 and KBr. Show the mechanism.In the following three compounds(1,2,3) arrange their relative reactivity towards the reagent CH3Cl / AlCl3. and justify it.Provide the reagents necessary to convert 3-methyl-2-butanol to 2-bromo-3-methylbutane. CHOOSE FROM THE FOLLOWING REAGRENTS BELOW conc. HBr NaBr, H2SO4 PBr3 HBr, peroxide Br2
- 1. a. i. Write out all the isomers of the compound with molecular formula C4H10O. ii. Select the normal/ primary isomer and treat it with conc.H2SO4 and heat. Identify the reaction and give the product ‘A’ from it. Identify compound 'A' . iii. Treatment of ‘A’ with HCl/H2O gives ‘B’. Identify compound 'B' with mechanism reaction. iv. Treatment of ‘A’ with cold KMnO4/ -OH gives ‘C’. Identify compound 'C' with mechanism reaction. b. i. Treatment of ‘A’ with Hot KMnO4/-OH gives ‘D’ followed by acidification of the mixture to give ‘E’. Identify compounds 'D' and 'E'. ii. When ‘A’ is treated with HBr in the presence of a peroxide, give the name and structure of the product.The HCo(CO)4complex can catalyze the isomerization of pure cis-2-butene to a mixture of cis-2-butene, trans-2-butene, and 1-butene. Propose a mechanism. Carefully show the process using wedges and dashes to indicate stereochemistry of each intermediate.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. (i) Draw the structural formula of compounds W, X and Y