Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 8.SE, Problem 35MP
10-Bromo- α -chamigrene, a compound isolated from marine algae, is thought to be biosynthesized from γ-bisabolene by the following route:
Draw the structures of the intermediate bromonium and cyclic carbocation, and propose mechanisms for all three steps.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Neopentyl alcohol, (CH3)3CCH2OH, reacts with concentrated HBr to give 2-bromo2-methylbutane, a rearranged product. Propose a mechanism for the formation of thisproduct.
Treatment of 2-bromo-2-methylbutane with KOH in ethanol yields a mixture of two Alkenes products. What are their likely structures? Show its mechanism.
The reaction of methylpropene with HBr, under radical conditions, gives two
intermediates. Propose a mechanism for the formation of the two products.
Propose a mechanism for the following reaction and use electronic factors to account for
the formation of a major product:
CH2
CH2Br
N-Bromosuccinimide (NBS)
ho, CCI4
Draw the structure of an antioxidant, Vitamin E free radical and use resonance structures
o account for its stability.
Chapter 8 Solutions
Organic Chemistry
Ch. 8.1 - Prob. 1PCh. 8.1 - How many alkene products, including E,Z isomers,...Ch. 8.2 - Prob. 3PCh. 8.2 - Addition of HCl to 1, 2-dimethylcyclohexene yields...Ch. 8.3 - Prob. 5PCh. 8.3 - Prob. 6PCh. 8.4 - Prob. 7PCh. 8.4 - From what alkenes might the following alcohols...Ch. 8.5 - Prob. 9PCh. 8.5 - What alkenes might be used to prepare the...
Ch. 8.5 - Tho following cycloalkene gives a mixture of two...Ch. 8.6 - Prob. 12PCh. 8.7 - Prob. 13PCh. 8.7 - Starting with an alkene, how would you prepare...Ch. 8.8 - Prob. 15PCh. 8.8 - Prob. 16PCh. 8.9 - What products would you expect from the following...Ch. 8.10 - Prob. 18PCh. 8.10 - Prob. 19PCh. 8.13 - Prob. 20PCh. 8.13 - What products are formed from hydration of...Ch. 8.SE - Name the following alkenes, and predict the...Ch. 8.SE - Prob. 23VCCh. 8.SE - Prob. 24VCCh. 8.SE - Prob. 25VCCh. 8.SE - Prob. 26MPCh. 8.SE - Prob. 27MPCh. 8.SE - Draw the structures of the organoboranes formed...Ch. 8.SE - Prob. 29MPCh. 8.SE - Provide the mechanism and products for the...Ch. 8.SE - Propose a curved-arrow mechanism to show how ozone...Ch. 8.SE - Prob. 32MPCh. 8.SE - Prob. 33MPCh. 8.SE - Prob. 34MPCh. 8.SE - 10-Bromo- α -chamigrene, a compound isolated from...Ch. 8.SE - Isolated from marine algae, prelaureatin is...Ch. 8.SE - Dichlorocarbene can be generated by heating sodium...Ch. 8.SE - Reaction of cyclohexene with mercury(II) acetate...Ch. 8.SE - Use your general knowledge of alkene chemistry to...Ch. 8.SE - Prob. 40MPCh. 8.SE - Hydroboration of 2-methyl-2-pentene at 25°C,...Ch. 8.SE - Prob. 42APCh. 8.SE - Suggest structures for alkenes that give the...Ch. 8.SE - Prob. 44APCh. 8.SE - Prob. 45APCh. 8.SE - Prob. 46APCh. 8.SE - Prob. 47APCh. 8.SE - Predict the products of the following reactions....Ch. 8.SE - Prob. 49APCh. 8.SE - How would you carry out the following...Ch. 8.SE - Draw the structure of an alkene that yields only...Ch. 8.SE - Show the structures of alkenes that give the...Ch. 8.SE - Prob. 53APCh. 8.SE - Which of the following alcohols could not be made...Ch. 8.SE - Prob. 55APCh. 8.SE - Prob. 56APCh. 8.SE - Prob. 57APCh. 8.SE - Compound A has the formula C10HI6. On catalytic...Ch. 8.SE - Prob. 59APCh. 8.SE - Prob. 60APCh. 8.SE - Prob. 61APCh. 8.SE - Draw the structure of a hydrocarbon that absorbs 2...Ch. 8.SE - Prob. 63APCh. 8.SE - The sex attractant of the common housefly is a...Ch. 8.SE - Prob. 65APCh. 8.SE - Prob. 66APCh. 8.SE - α-Terpinene, C10H16, is a pleasant-smelling...Ch. 8.SE - Prob. 68APCh. 8.SE - Prob. 69APCh. 8.SE - Prob. 70APCh. 8.SE - Prob. 71APCh. 8.SE - Prob. 72AP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Reaction of iodoethane with CN- yields a small amount of isonitrile, CH3CH2N≡C, along with the nitrile CH3CH2N≡N, as the major product. Write electron-dot structures for both products, assign formal charges as necessary, and propose mechanisms to account for their formation.arrow_forwardAlkylation of benzene with 1-chlorobutane in the presence of AlCl3 gave not only the expected butylbenzene product but also, as a major product, (1-methylpropyl)benzene. Write an equation for the reaction Propose a mechanism to account for the formation of butylbenzene Propose a mechanism to account for the formation of (1-methylpropyl)benzenearrow_forwardWhen 1,4-dibromobutane was treated with excess ethanamine at propanone, the main product had the molecular formula C6H13N. Deduce the structure of this product by proposing a mechanism for the reaction.arrow_forward
- When 3-methyl-1-butene reacts with HBr, two alkyl halides are formed: 2-bromo-3-methylbutane and 2-bromo-2-methylbutane. Propose a mechanism that explains the formation of these two products.arrow_forwardAmantadine is effective in preventing infections caused by the influenza A virus and in treating established illnesses. It is thought to block a late stage in the assembly of the virus. Amantadine is synthesized by treating 1-bromoadamantane with acetonitrile in sulfuric acid to give N-adamantylacetamide, which is then converted to amantadine. CH,C=N in H,SO, Br NHCCH3 NH2 1-Bromoadamantane Amantadine (a) Propose a mechanism for the transformation in Step 1. (b) Describe experimental conditions to bring about Step 2.arrow_forwardSuggest mechanisms for the following reactions, both of which involve radical intermediates: (b) (c) Br. MeO MeO CO₂Et N-NO Bu3SnH, AIBN heat hv HO `N MeO MeO NH CO₂Etarrow_forward
- Propose a mechanism for the acid-catalyzed hydration of 1-methylcyclohexene to give 1-methylcyclohexanol. Which step in your mechanism is rate-determining?arrow_forwardNonconjugated , -unsaturated ketones, such as 3-cyclohexenone, are in an acid-catalyzed equilibrium with their conjugated , -unsaturated isomers. Propose a mechanism for this isomerization.arrow_forwardTerpin, prepared commercially by the acid-catalyzed hydration of limonene, is used medicinally as an expectorant for coughs. (a) Propose a structural formula for terpin and a mechanism for its formation. (b) How many cis, trans isomers are possible for the structural formula you propose?arrow_forward
- A step in a synthesis of PGE1 (prostaglandin E1, alprostadil) is the reaction of a trisubstituted cyclohexene with bromine to form a bromolactone. Propose a mechanism for formation of this bromolactone and account for the observed stereochemistry of each substituent on the cyclohexane ring. Alprostadil is used as a temporary therapy for infants born with congenital heart defects that restrict pulmonary blood flow. It brings about dilation of the ductus arteriosus, which in turn increases blood flow in the lungs and blood oxygenation.arrow_forwardEnamines normally react with methyl iodide to give two products: one arising from alkylation at nitrogen and the second arising from alkylation at carbon. For example, Heating the mixture of C-alkylation and N-alkylation products gives only the product from C-alkylation. Propose a mechanism for this isomerization.arrow_forwardFollowing is a retrosynthetic analysis for an intermediate in the industrial synthesis of vitamin A. (a) Addition of one mole of HCl to isoprene gives 4-chloro-2-methyl-2-butene as the major product. Propose a mechanism for this addition and account for its regioselectivity. (b) Propose a synthesis of the vitamin A precursor from this allylic chloride and ethyl acetoacetate.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
Organic Chemistry
Chemistry
ISBN:9781305580350
Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher:Cengage Learning
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT
Coenzymes and cofactors; Author: CH15 SWAYAM Prabha IIT Madras;https://www.youtube.com/watch?v=bubY2Nm7hVM;License: Standard YouTube License, CC-BY
Aromaticity and Huckel's Rule; Author: Professor Dave Explains;https://www.youtube.com/watch?v=7-BguH4_WBQ;License: Standard Youtube License