EBK ORGANIC CHEMISTRY
8th Edition
ISBN: 8220102744127
Author: Bruice
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 72P
The second-order rate constant (in units of M–1s–1) for acid-catalyzed hydration at 25 °C is given (or each of the following
- a. Calculate the relative rotes of hydration of the alkenes. (Hint: Divide each rate constant by the smallest rate constant of the series: 3.51 × 10–8.)
- b. Why does (Z)-2-butene react faster than (E)-2-butene?
- c. Why does 2-methyl-2-butene react faster than (Z)-2-butene?
- d. Why does 2.3-dimethyl-2-butene react faster than 2-melhyl-2·butene?
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When 2-bromobutane is reacted with CH3O-, two alkene products, namely 2-butene and 1-butene are obtained. Explain why the E2 reaction produces 2-butene as the major product (80%) and 1-butene as the minor product (20%)
Elimination of HBr from 2-bromobutane affords a mixture of 1-butene and 2-butene. With sodium ethoxide as base, 2-butene
constitutes 81% of the alkene products, but with potassium tert-butoxide, 2-butene constitutes only 67% of the alkene
products. Offer an explanation for this difference.
2. What Alkene would be used to synthesize
3-bromohexane?
+ HBr
CH;CH,CHCH,CH,CH3
br
3. Write down the mechanism for the
following reaction and predict which of the
two possible products will be formed in the
greatest yield ( 2nd and 3d carbocation).
Write down the structures of the two
possible products and explain your answer.
CH;CH = CHCH, CH, CH3 + HBr
Chapter 6 Solutions
EBK ORGANIC CHEMISTRY
Ch. 6.1 - Draw the mechanism for the reaction of cyclohexene...Ch. 6.2 - a. How many bond orbitals are avilable for...Ch. 6.2 - Prob. 3PCh. 6.2 - Prob. 4PCh. 6.3 - Prob. 5PCh. 6.4 - Prob. 6PCh. 6.4 - Prob. 7PCh. 6.4 - What alkene should be used to synthesize each of...Ch. 6.5 - The pKa of a protonated alcohol is about 2.5, and...Ch. 6.5 - Prob. 10P
Ch. 6.5 - Prob. 11PCh. 6.6 - a. What is the major product or each or the...Ch. 6.6 - Prob. 14PCh. 6.6 - Prob. 15PCh. 6.7 - What is the major product obtained from the...Ch. 6.8 - Which is more highly regionselective: reaction of...Ch. 6.8 - Prob. 19PCh. 6.9 - What will be the product of the preceding reaction...Ch. 6.9 - Prob. 21PCh. 6.9 - Prob. 22PCh. 6.9 - Prob. 23PCh. 6.9 - What is the product of the addition of 1Cl to...Ch. 6.9 - What will be the major product obtained from the...Ch. 6.9 - Propose a mechanism for the following reaction:Ch. 6.10 - Draw structures for the following: a. 24...Ch. 6.10 - What alkene would you treat with a peroxyacid in...Ch. 6.11 - What products are formed when the following...Ch. 6.11 - Prob. 31PCh. 6.11 - Prob. 32PCh. 6.11 - The following product was obtained from the...Ch. 6.12 - What characteristics must the reactant of a...Ch. 6.13 - Prob. 36PCh. 6.13 - What stereoisomers are obtained from each of the...Ch. 6.13 - Prob. 41PCh. 6.13 - Prob. 42PCh. 6.13 - Prob. 43PCh. 6.13 - Prob. 45PCh. 6.13 - Prob. 46PCh. 6.13 - Prob. 47PCh. 6.13 - Prob. 48PCh. 6.13 - Prob. 49PCh. 6.13 - Prob. 50PCh. 6.14 - Prob. 51PCh. 6.16 - Prob. 53PCh. 6.16 - Explain why 3-methykyclohexene should not be used...Ch. 6 - Prob. 55PCh. 6 - Prob. 56PCh. 6 - Prob. 57PCh. 6 - What is the major product of the reaction of...Ch. 6 - Give two names for each of the following:Ch. 6 - Prob. 60PCh. 6 - What are the products of the following reactions?...Ch. 6 - When 3-methyl-1-butene reacts with HBr, two alkyl...Ch. 6 - Draw curved arrows to show the flow of electrons...Ch. 6 - What reagents are needed to carry out the...Ch. 6 - Prob. 65PCh. 6 - Prob. 66PCh. 6 - Prob. 67PCh. 6 - What is more stable? a. CH3C+HCH3orCH3C+HCH2ClCh. 6 - Prob. 69PCh. 6 - a. Draw the product or products that will be...Ch. 6 - Prob. 71PCh. 6 - The second-order rate constant (in units of M1s1)...Ch. 6 - Which compound has the greater dipole moment?Ch. 6 - Prob. 74PCh. 6 - Prob. 75PCh. 6 - Prob. 76PCh. 6 - Prob. 77PCh. 6 - Prob. 78PCh. 6 - Prob. 79PCh. 6 - Prob. 80PCh. 6 - Prob. 81PCh. 6 - Prob. 82PCh. 6 - Prob. 83PCh. 6 - Prob. 84PCh. 6 - Prob. 85PCh. 6 - Prob. 86PCh. 6 - Draw the products of the following reactions. If...Ch. 6 - Prob. 88PCh. 6 - Prob. 89PCh. 6 - Prob. 90PCh. 6 - Two chemists at Dupont found that lCH2Znl is...Ch. 6 - Prob. 92PCh. 6 - Prob. 93PCh. 6 - What alkene gives the product shown after...Ch. 6 - Prob. 95PCh. 6 - Prob. 96PCh. 6 - Prob. 97PCh. 6 - Prob. 98PCh. 6 - Prob. 99PCh. 6 - Prob. 100PCh. 6 - Propose a mechanism for the following reaction:Ch. 6 - Prob. 102PCh. 6 - Prob. 103P
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- 4. Write in the product, including stereochemistry where relevant, for these reactions. a) b) cyclohexene 1-pentene 1. Os04 2. NaHSO3 1. 03 2. Zn, H* →→arrow_forwardChoose the two alkyl bromides and the hydrogenation method that must be used to synthesize these alkenes from acetylene. Enter your answer as two letters in alphabetical order, followed by a number; i.e. ac2, not ca2. Do not use punctuation. Alkyl Halides а. СHзCH2Br b. CH3(CH2)4Br c. CH3(CH2)5Br d. CH3(CH2)§Br e. CH3(CH2);Br f. CH3(CH2)¿Br g. CH3(CH2)12Br Hydrogenation Method 1. H2, Lindlar's catalyst 2. Na, NH3 (1) Alkene #1: CH3 H3C bb1 Alkene #2: H3C, CH3 df1arrow_forwarda. Provide a structure for (Z)-4-bromo-3-heptene b. Which reagents should be used to convert hex-3-yne to (E)-hex-3-ene? c. Describe a sequence of reactions by which 2,3-dibromobutane can be prepared from propyne.arrow_forward
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