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Ch 20 Review
- Propose a synthetic scheme for the synthesis of 3-pentanone from ethyl bromide and cyanide as your carbon sources.
- Show the mechanism for the acid catalyzed hydrolysis of N-methylbenzamide.
- NAME the compound responsible for the following spectral data.
MS (M: 101)
IR
HNMR: 1.18 (s, 9H), 5.90 (s, 2H, exchanges with D2O)
CNMR..
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- Ketones are less reactive than aldehydes. It is due to A. Alkyl groups are electron donating B. Steric hindrance C. Both of the given choices above D. No correct answer from the given choices 2. This organic compound with a general formula of RCOR forms ________ addition products when reacted to _________. A. Bircarbonate , Sodium bicarbonate B. Bisulfite , Sodium bisulfite C. Bisulfate , Sodium bisulfate D. Chlorine , Sodium chloride E. No correct answer from the given choices 3. Some of the aromatic aldehydes from ________ has a very pleasant smell. A. Laboratory B. Alcohols C. Ketones D. Nature E. No correct answer from the given choices 4. Aldehydes have a general structure of R-CHO. Which part of the general structure may be a hydrocarbon radial - substituted or unsubstituted. a. C b. H c. R d. O e. No correct answer from the given choicesMULTIPLE CHOICE 1. A 37-40% solution of formaldehyde. * A. butyraldehyde B. acetone C. formalin D. acetaldehyde 2. Which of the following will GIVE a positive reaction to haloform reaction? * A. propanal B. butanal C. pentanal D. acetaldehydeOhem lab question The experiment is the reduction of a nitro group to an amine I've attached my work, but I'm not sure if it's correct. Can you please double check that my reduction equation is correct and then that my calculations are correct (especially the limiting reactant and theoretical yield) This is the reduction of m-nitroacetophenone and granular tin to m-aminoacetophenone We are using 200 mg of m-nitroacetophenone and 400 mg of granular tin. This will be done with 4mL of 6M hydrochloric acid and 30% sodium hydroxide.
- Compound MM (g/mol) ortho mp (oC) meta mp (oC) para mp (oC) Nitroacetanilide 180.16 94 155 214-217 Methyl nitrobenzoate 181.15 -13 78-80 94-96 Based on the table above, determine the regiochemistry of your methyl nitrobenzoate and draw the structure Based on the table above , determine the regiochemistry of your nitroacetanilide and draw the structure.Name the following aldehydes and ketones: (a) 0 (b) A CH2CH2CHO CH3CH2CCHCH3 CH3 (c) 0 0 CH3CCH2CH2CH2CCH2CH3 O (f) (d) CH3 HO АН (e) CH2CH=CHCH2CH2CH H3C. сно HT "CH3 PROBLEM 19-2Problem 8.1 a) Choose the most atom economical protecting group (PG) for the alcohol that would be stable to the strong basic Horner-Emmons reagent in the reaction with the aldehyde to make the alkene given below (picture attached). b) What is the approximate pKa of a primary alcohol? Estimate the pKa of the Horner-Emmons conjugate acid (H instead of Li) based on the pKa of a simple beta -diester. c) Draw an acid-base reaction between an alcohol and a beta diester base. Which side would the equilibrium be skewed towards? By how many orders of magnitude? d) How could you avoid the need for a protecting group in this reaction?
- What is the role of the acid in an acid catalyzed acyl substitution reaction? Draw a mechanism for a reaction that includes salicylic acid, acetic anhydride, pyridine and H2SO4.(SYN) Using acetic acid as your only source of carbon, propose a synthesis of each of the following compounds. You may use any inorganic reagent necessary. (a) ethyl acetate; (b) butan-2-ol; (c) 3-methylpentan-3-ol; (d) butan-2-one; (e) ethanamine; (f) N-ethylacetamide; (g) N,N-diethylacetamideWhich substrate will you use to synthesize 1-propanol from propanal? A.) NaBH₄ B.) O₃ C.) KMnO₄ D.) CH₃MgCl E.) None of the given answer
- Chemistry starting from 5-bromoisatin, 3-methylbenzylbromide, 4-methylbenzylbromide, how to yield the following compounds? can you propose a mechanism?1. Which one is INCORRECT? a.Br2 : electrophilic aromatic substitution b.Neutral KMnO4 : oxidation c.Lucas reagent : Nucleophilic substitution d.FeCl3 : oxidation e. all correct2. Which of the following reagents can distinguish 2,3-Dimethyl-2-butanol and 2-Phenyl-1-propanol? a.FeCl3 b.Acidity c.KMnO4 d.ZnCl21.answer the following questions A. What is reagent used to convert secondary amine to tertiary amine? choices: NH3,SOCL2,H20 and excess NH3,Methylhalide? B. During azide synthesis what is good leaving group? Choices: N3,N2,H20,NH2