Organic Chemistry - With Access (Custom)
Organic Chemistry - With Access (Custom)
9th Edition
ISBN: 9781337031745
Author: McMurry
Publisher: Cengage
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Chapter 8.3, Problem 6P
Interpretation Introduction

Interpretation:

Given that, when an unsymmetrical alkene such as propene is treated with NBS in aqueous dimethyl sulfoxide, the major product has the bromine atom bonded to the less highly substituted carbon atom. Whether the orientation is Markovnikov or non-Markovnikov is to be explained.

Concept introduction:

NBS can be used as a source of bromine, as it is stable, easily handled compound that slowly decompose in aqueous dimethyl sulfoxide to yield bromine at controlled rate. Bromine from NBS adds on to the double bond to give a cyclic bromonium ion. Water, being a nucleophile, attacks the bromonium ion from the unshielded side to give an intermediate which loses a proton to yield a bromohydrin as the product. The addition occurs with anti stereochemistry.

According to Markovnikov rule, in the addition of HX to unsymmetrical alkenes the H (positive part) attaches itself to the carbon with fewer alkyl substituents and X (negative part) attaches itself to the carbon with more alkyl substituents.

To explain:

Whether the orientation of groups in the addition reaction between propene and NBS in aqueous dimethyl sulfoxide ,where in the major product has the bromine atom bonded to the less highly substituted carbon atom, is Markovnikov or non-Markovnikov.

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Chapter 8 Solutions

Organic Chemistry - With Access (Custom)

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
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