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- When equivalent amounts of methyl bromide and sodium iodide are dissolved in methanol, the concentration of iodide ion quickly decreases and then slowly returns to its original concentration. Account for this observation.Which of the following reactions will synthesize phenol from benzene? 1) HNO3 + H2SO4; 2) Fe, HCl; 3) NaNO2, HCl, 0-10 oC; 4) warm H2SO4 and H2O 1) HNO3 + H2SO4; 2) Fe, HCl; 3) NaNO2, HCl, 0-10 oC; 4) CuCN; 5) dilute acid and heat 1) Acetyl chloride & AlCl3; 2) bleach 1) Ph-N2+ + KI; 2) BrMgCH=CH2 in ether, followed by H3O+; 3) warm, conc'd KMnO4 1) Cl-CH(CH3)-CH2CH2CH3 + FeBr3; 2) hot, conc'd KMnO4Which of the following compounds are suitable solvents for Grignard reactions? 1,4-dioxane
- Provide the principle organic product for the following reactions. If more than one product is formed indicate which one you expect to be the major product.Which of the following is not an oxidizing agent used to synthesize RCOOH from primary ROH? Periodinane in DCM Potassium permanganate in acidic solution Lithium aluminum hydride in ether solution all of the above Which of the following alcohols will be the most difficult to dehydrate? n-butanol butan-2-ol tert-butanol isobutanolIn preparation of dibenzalacetone from benzaldehyde: Give two techniques that can be used to purify partially air-oxidized benzaldehyde. Indicate how each technique works in purifying benzaldebyde from its air-oxidized impurities.
- Wittig reactions with the following -chloroethers can be used for the synthesis of aldehydes and ketones. (a) Draw the structure of the triphenylphosphonium salt and Wittig reagent formed from each chloroether. (b) Draw the structural formula of the product formed by treating each Wittig reagent with cyclopentanone. Note that the functional group is an enol ether or, alternatively, a vinyl ether. (c) Draw the structural formula of the product formed on acid-catalyzed hydrolysis of each enol ether from part (b).The base-promoted rearrangement of an -haloketone to a carboxylic acid, known as the Favorskii rearrangement, is illustrated by the conversion of 2-chlorocyclohexanone to cyclopentanecarboxylic acid. It is proposed that NaOH first converts the a-haloketone to the substituted cyclopropanone shown in brackets and then to the sodium salt of cyclopentanecarboxylic acid. (a) Propose a mechanism for base-promoted conversion of 2-chlorocyclohexanone to the proposed intermediate. (b) Propose a mechanism for base-promoted conversion of the proposed intermediate to sodium cyclopentanecarboxylate.Provide the structural formula of the products that are formed when acetophenone reacts with these reagents: 1. NaBH4 in Methanol 2. Ag(NH3)2+ 3. C6H5MgBr, then H3O+ 4. H2 in Pt 5. Hydroxylamine 6. Phenylhydrazine 7. LiAlH4 then water 8. HCN 9. Diethylamine 10. 2 CH3OH, HCl catalyst
- Concentrated phosphoric acid and concentrated sulfuric acid are common choices for dehydrating alcohols. Concentrated hydrochloric acid is not. What problem might occur if concentrated hydrochloric acid were substituted for phosphoric acid in the cyclohexene synthesis? allylic chlorination of the cyclohexene product may occur chlorocyclohexane may form as a byproduct the equilibrium will now favor formation of cyclohexanol by Le Chatelier's Principle hydrochloric acid is a weaker acid than phosphoric acidWhat preliminary actions should we take to dispose of the following substances and describes how should we dispose of them ? A- Formaldehyde B- Propofol C- PentobarbitalWhen bromomethane undergoes solvolysis in a solvent mixture composed of 90% water/10% acetone, the reaction rate is faster than when the same compound is solvolyzed in 80% water/20% acetone. Explain.