Concept explainers
(a)
Interpretation:
The structure of products formed from dehydration of 3-hexanol needs to be determined.
Concept Introduction:
According to Zaitsev's rule, in elimination reaction the
Dehydration reaction is defined as removal of water molecule from a compound. An alcohol reacts with acid to from alkene as a dehydration product.
(b)
Interpretation:
The reason for the formation of both the products in same amount needs to be explained.
Concept Introduction:
According to Zaitsev's rule, in elimination reaction the alkene formed in major amount is the one which is formed due to the removal of hydrogen from the beta carbon atom with a smaller number of hydrogen atoms. Also, the alkene formed as major product is more substituted.
Dehydration reaction is defined as removal of water molecule from a compound. An alcohol reacts with acid to from alkene as a dehydration product.
Want to see the full answer?
Check out a sample textbook solutionChapter 14 Solutions
CONNECT IA GENERAL ORGANIC&BIO CHEMISTRY
- 1) The acid-catalyzed dehydration of 2-methyl-2-butanol yields two alkene products, what are the names of the two alkenes? 2) which of the two alkenes is the major product?arrow_forwardWrite the reagent or draw structures of the starting material or organic product(s) in the following reactions. If more than one product is formed, identify the major product where possible. (a) (b) HO OH OH H2SO4 ? Cl₂ ? FeCl3arrow_forward[10] 10] Q1. Do the following conversions as directed. Write the complete reaction equation. (a) Benzaldehyde to Benzoic Acid. (b) Propanal to 1-propanal (c) Cyclohexanone to Cyclohexanol (d) Acetaldehyde to Ethyl alcohol (e) Acetone to Iso-propyl alcoholarrow_forward
- 4 But-2-enal, CH₂CH=CHCHO, is a pale yellow, flammable liquid with an irritating odour. (a) But-2-enal exists as two stereoisomers. Draw skeletal formulae to show the structure of the two stereoisomers of but-2-enal. (b) (i) Describe a simple chemical test that would show that but-2-enal is an aldehyde. (ii) Explain why this test gives a different result with aldehydes than it does with keton (c) But-2-enal also reacts with sodium borohydride, NaBH4. (i) Identify the organic compound formed in this reaction. (ii) State the type of chemical reaction occurring. (d) Precautions must be taken to prevent but-2-enal catching fire. Construct a balanced equation for the complete combustion of but-2-enal, C₂HO.arrow_forwardEthers (general formula R—O—R)have many important uses. Until recently,methyl tert-butyl ether (MTBE, right)was used as an octane booster and fueladditive for gasoline. It increases the oxy-gen content of the fuel, which reducesCO emissions. MTBE is synthesized bythe catalyzed reaction of 2-methylpropene with methanol.(a) Write a balanced equation for the synthesis of MTBE. (Hint:Alcohols add to alkenes similarly to the way water does.)(b) If the government required that auto fuel mixtures contain2.7% oxygen by mass to reduce CO emissions, how many gramsof MTBE would have to be added to each 100. g of gasoline?(c) How many liters of MTBE would be in each liter of fuel mix-ture? (The density of both gasoline and MTBE is 0.740 g/mL.)(d) How many liters of air (21% O₂ by volume) are needed at24C and 1.00 atm to fully combust 1.00 L of MTBE?arrow_forwardWhich products are formed when hydrobromic acid is added to (a) trans-2-hexene, (b) 2-methyl- 2-pentene, and (c) 4-methylcyclohexene, and how many regioisomers can be formed in each case?arrow_forward
- Draw a structural formula of an alkene that undergoes acid-catalyzed hydration to give each alcohol as the major product (more than one alkene may give each alcohol as the major product). (a) 3-Hexanol (b) 1-Methylcyclobutanol (c) 2-Methyl-2-butanol (d) 2-Propanolarrow_forwardDraw all the alkyl halides with molecular formula C 5H 11Cl formed when pentane (CH 3CH 2CH 2CH 2CH 3) is heated with Cl 2.arrow_forwardThe addition reaction of an acid (HBr) to an alkene (CH3CH=CH2) follows Markovnikov's rule and involves: A) initial attack by Br– B) initial attack by Br• C) isomerization of CH3CH2CH2Br D) formation of a primary carbocation. E) formation of a secondary carbonation. (F) Formation of allyl carbocationarrow_forward
- Draw the skeletal (bond-line) structures of all isomers of C4H8O (including configurational isomers) that contain an alkene and an ether. There should be 5 structures.arrow_forward5B In the following reactions, mixtures of alkenes and ethyl ethers are formed. Draw their structures. Explain which is or are likely to be the main product(s) in each reaction. In case of formation of two isomers of alkenes, explain which is formed in greater proportion CH3 CH3 H3C-C H -Br CH3 EtOHarrow_forwardThe acid-catalyzed dehydration of 2,3-dimethyl-3-pentanol yields three alkene products. What are the names of the three alkenes? Which of the three alkenes is the major product?arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning