2. Predict the product(s) of the following reaction and explain why it forms, including any selectivities. Assume that any necessary catalytic acid is present. OH قدمة
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- Benzoic acid, Ph-COOH (C6H5CO2H), is not soluble in water while it dissolves in ether (diethyl ether), (CH3CH2)2O. Yet upon treatment with sodium hydroxide, benzoic acid turns hydrophilic and dissolves in water. Provide chemical explanation of this observation.Provide the reagents necessary to complete the following reactions.Indicate the products A and B that are obtained in the following reactions: OH CH3 + HOCH2-CH₂OH + TSOH → A 1° NaH/THF A + →> B 2º C6H5-CH2Cl Briefly comment on each reaction.
- (a) What functional group is undergoing a transformation in the reaction? (b) What functional group is it being transformed into (in the final product)?Ketones and aldehydes react with sodium acetylide (the sodium salt of acetylene) to give alcohols, as shown in the following example: R1 ОН 1. НС—с: Na* R2 R1 R2 2. Нзо" HC Draw the structure of the major reaction product when the following compound reacts with sodium acetylide, assuming that the reaction takes preferentially from the Si face of the carbonyl group. • Use the wedge/hash bond tools to indicate stereochemistry where it exists. • You do not have to explicitly draw H atoms. • If a group is achiral, do not use wedged or hashed bonds on it. CH3 CHPredict the major product of the following reaction and draw it in the space provided. 1) NH,NH, 2) KOH, heat
- 4) Write the reaction between cyclohexanecarboxylic acid and thionyl chloride showing all three products (two gaseous and one liquid). Take the liquid product and treat it with 2 moles of dimethylamine in benzene as the solvent. You get two products. What are they? Draw their formulae and write their names.Show how to synthesize the following product as the major product starting with 2,2-dimethylpropane as the starting material. You may use additional reagents and any number of steps. Be sure to list each step with all reactants/reagents/conditions required. (Do not use hydrogenation reactions). Write the process.The following questions concern ethyl (2-oxocyclohexane)carboxylate.(a) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)-carboxylate by a Dieckmann cyclization.(b) Write a chemical equation showing how you could prepare ethyl (2-oxocyclohexane)-carboxylate by acylation of a ketone.(c) Write structural formulas for the two most stable enol forms of ethyl (2-oxocyclohexane)carboxylate.(d) Write the three most stable resonance contributors to the most stable enolate derived from ethyl (2-oxocyclohexane)carboxylate.(e) Show how you could use ethyl (2-oxocyclohexane)carboxylate to prepare 2-methylcyclohexanone.(f) Give the structure of the product formed on treatment of ethyl (2-oxocyclohexane)-carboxylate with acrolein (H2C=CHCH=O) in ethanol in the presence of sodium ethoxide
- Provide the major organic product of the following reaction. CH3 HNO3, H₂SO4, AGive the major product(s) of the following reaction. 1) NaCN 2) H+1) The carbon-oxygen double bond present in aldehydes and ketones is very polar. What does this mean and how does it arise? 2) The carbon-oxygen double bond is readily attacked by nucleophiles like cyanide ions or ammonia. (i) What do you understand by the term nucleophile? (ii) Which part of the carbon-oxygen double bond is attractive to nucleophiles? 3) Why is there a difference between aldehydes and ketones in their response to oxidizing agents such as potassium dichromate(VI) solution acidified with dilute sulfuric acid?
