Compound A reacts with CrO, in dilute acid to give 2,3-dimethylbutanoic acid. What is compound A likely to be? Select one: a. 2-Methylbutan-3-one b. 2,3-Dimethylbutan-1-ol c. 2-Methylbutan-1-ol d. 2,3-Dimethylbutanal.
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- Suppose you have just synthesized heptanoic acid from heptan-1-ol. The product iscontaminated by sodium dichromate, sulfuric acid, heptan-1-ol, and possibly heptanalWhich or which of the statements given below is correct. I) Maleic anhydride is a carboxylic acid derivative and its reaction with water is a reduction reaction. II) Fumaric acid and maleic acid are stereoisomers of each other III) Since fumaric acid has a more stable structure than maleic acid, its boiling point is higher. A. Solo I B. I and III C. II and III D. I, II, III E. Solo IIIa) Put these three common types of carbonyl compound in order of decreasing reactivity ester amide acid chloride b) For the least reactive, show the interconversion to its other resonance form: How does this electron delocalisation make it stable? c) For the most reactive, draw the mechanism of its undergoing hydrolysis (reaction with H2O): Why makes this type of carbonyl so reactive to nucleophiles?
- (a) Account for the following :(i) Cl – CH2COOH is a stronger acid than CH3COOH.(ii) Carboxylic acids do not give reactions of carbonyl group.(b) Write the chemical equations to illustrate the following name reactions:(i) Rosenmund reduction (ii) Cannizzaro’s reaction(c) Out of CH3CH2 – CO – CH2 – CH3 and CH3CH2 – CH2 – CO – CH3, which gives iodoform test?Hi please show your working out and make comments about what you are doing and why. This question also requires a detailed description of why you put the compounds from this question in that order.An unknown compound is treated with peroxyacetic acid in dilute sulfuric acid. The product of reaction 1 is reacted with excess PBr3 , then excess NaNH2 (reaction 3). The product of reaction 3 is treated with lithium, then n-butylbromide (reaction 4). In reaction 5 the product of reaction 4 is reacted with ozone, then NaHSO3. This final reaction produced 2 acids, propanoic acid and pentanoic acid. What was the original unknown compouond?
- Why is the reaction of the type shown below usually done? a.To make an aldehyde or ketone less water soluble b.To make the molecule more reactive c.To protect a ketone or aldehyde carbonyl d.To increase the oxygen content e.To make the alpha hydrogens more acidic1. Put these three common types of carbonyl compound in order of decreasing reactivity ester amide acid chloride 2. For the least reactive, show the interconversion to its other resonance form: How does this electron delocalisation make it stable? 3. For the most reactive, draw the mechanism of its undergoing hydrolysis (reaction with H2O): Why makes this type of carbonyl so reactive to nucleophiles?(a) How will you carry out the following conversions?(i) Acetylene to Acetic acid (ii) Toluene to m-nitrobenzoic acid(iii) Ethanol to Acetone(b) Give reasons :(i) Chloroacetic acid is stronger than acetic acid.(ii) pH of reaction should be carefully controlled while preparing ammonia derivatives of carbonyl compounds.
- Base from the illustration: 1. Which compound/s will test positive in Baeyer’s test? 2. Which compound/s will produce an orange precipitate upon reaction with 2,4-DNPH? 3. Which compound/s will test positive in the Iodoform test? 4. Which compound/s will produce a brick-red precipitate upon reaction with Fehling’s reagent (CuSO4, tartrate, NaOH)? 5.The name for Reaction 1 is _____ while Reaction 2 is called _____. Choices: A. Williamson Ether synthesis, B. Hydration, C. Epoxidation, D. Acidic cleavage The reagent/s for REACTION 1 is/are ______ Choices: A. m-chloroperoxybenzoic acid, B. H2O/H3PO4, C. H3O+, D. HI The reagent/s for REACTION 2 is/are ______ Choices: A. m-chloroperoxybenzoic acid, B. water in acidic medium, C. dilute acid, D. hydroiodic acid1. i)Give the structure of the product from the reaction of propanal with 1M ethanol in dry acid . ( II)What happens when further 1M of ethanol is added to the above