Concept explainers
(a)
Interpretation:
The major product of the given reaction is to be stated.
Concept introduction:
The reaction of an ester with excess Grignard reagent followed by hydrolysis converts an ester into tertiary alcohol through tetrahedral intermediate. The Grignard reaction takes place in three steps. The first step is addition of Grignard reagent. The second is elimination of alkoxide followed by formation of
(b)
Interpretation:
The synthesis of
Concept introduction:
The reaction of an ester with excess Grignard reagent followed by hydrolysis converts an ester into tertiary alcohol through tetrahedral intermediate. The Grignard reaction takes place in three steps. The first step is addition of Grignard reagent. The second is elimination of alkoxide followed by formation of ketone. The third step is addition of another Grignard reagent followed by formation of an alkoxide. The fourth step is hydrolysis of an alkoxide to yield tertiary alcohols.
(c)
Interpretation:
The preparation of Lexan with the use of diethyl carbonate instead of phosgene and the preparation of Sevin (an insecticide) with the use of diethyl carbonate instead of methyl isocyanate are to be stated.
Concept introduction:
Diethyl carbonate is an ester (carbonic acid and ethanol). It is a liquid reagent that is easy to handle. However, phosgene is a corrosive and highly toxic. Diethyl carbonate successfully replaces phosgene in the synthesis of Lexan and Sevin.
Want to see the full answer?
Check out a sample textbook solutionChapter 21 Solutions
Organic Chemistry (9th Edition)
- What compounds are formed from the reaction of benzoyl chloride with the following reagents? a. sodium acetate b. water c. excess dimethylamine d. aqueous HCl e. aqueous NaOH f. cyclohexanol g. excess benzylamine h. 4-chlorophenol i. isopropyl alcohol j. excess aniline k. potassium formatearrow_forwardWhat will be the major product if 1-hexanol is oxidized with pyridinium chlorochromate in dichloromethane as the solvent? Select one: A. hexanone B. hexanoic acid C. hexanal D. propyl propanoate What is the minor product obtained when (Z)-1-bromo-2-methylbut-1-ene reacts with HBr? Select one: A. 1,2-dibromo-2-methylbutane B. 2,2-dibromo-1-methylbutane C. 1,2-dibromo-1-methylbutane D. 1,1-dibromo-2-methylbutanearrow_forward11. Starting with 1,3-propanediol, ethanol, and 1-propanol, design a synthesis for 2-ethylpentanoic acid. Use any other reagents that are needed.arrow_forward
- Evaluate the chemical reactions carefully. Predict the reagents required (marked with letters) in order to satisfy the given reactions. A.) Synthesis of 4-octanol Aarrow_forwardWhich of the following products could you not create using malonic acid ethyl ester as a starting material? A. diethyl-2,2-dialkylmalonate B. maleic acid C. Carboxylic acid D. 2,2-dialkylmalonic acid E. diethyl 2-alkyl malonatearrow_forward9. Give the product structure and the mechanism for the reaction of diethyl carbonate with ethyl 3-phenylpropionate reacted sequentially with a. sodium ethoxide in ethanol. b. sodium hydroxide. c. aqueous acid. d. heat.arrow_forward
- Part 2arrow_forward37. Which of the following compounds gives a primary alcohol upon reaction with phenylmagnesium bromide? Assume the usual acid work-up. A. 2-Methyl oxirane B. Ethylene oxide C. Ethyl formate D. Carbon dioxide 38. Which of the following compounds is the strongest base? A. (CH3);CuLi B. CH3LI C. CH3ZNB. D. CH3MBB. 39. In the following compound which is the most basic nitrogen? HN A CH2CH2NH2 40. Choose the reaction sequence that will best carry out the following transformation: HO CH2CH3 C. C. H3C CH3 CH3 CH3 0 1 + + CH3ONA + CH;CH2Br i) H20, H A. R) 1 + CH3CH2ONA В. ii) H2O, H i) H20, H* c) CH;CH2Br + Mg, ELO C. i) add 1 il) H2O, H* 0 1+ CH3CH20OH + Mg H) H20, H'arrow_forwardHh.10.arrow_forward
- 11. The molecule below is reacted with ethylene glycol in acidic conditions. The product contains the following functional groups. a. An ester and an acetal b. An acetal and a hemiacetal c. A hemiacetal and a carboxylic acid d. Two different acetals 12. Circle the functional groups that can be reduced with LiAlH4 l b R A H R R R 13. For each, state whether it is an acetal, a hemiacetal, or neither. OH HO OH OH но..... x60x OH OH OH HOM... OHarrow_forwardAnswer all three parts plz. You are starting with three aryl bromides. They undergo a typical grignard reaction with magnesium metal and anhydrous ether (diethyl ether). Dry ice is then added to it and it is then cooled. Draw and label the names of the aryl carboxylic acids that will form for each. Part a) 4-bromonitrobenzene Part b) 4-bromotoluene Part c) 2-bromotoluenearrow_forward15. In organic synthesis, sodium methoxide (NaOCH3) is useful as a strong base and as a nucleophile. Sodium methoxide can easily be prepared by reacting which one of the following with methanol? (Hint: This reaction is seen in the pyrimethamine synthesis.) A) sodium chloride B) sodium sulfate C) sodium hydroxide D) sodium metal E) sodium nitrite 16. The reaction of ferrocene with acetic anhydride to form acetylferrocene and diacetylferrocene is an example of which type of reaction? A) a Grignard reaction B) a Wittig reaction C) a Friedel-Crafts reaction D) a Diels-Alder reaction E) a reductive amination reactionarrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY