Organic Chemistry
11th Edition
ISBN: 9781118133576
Author: T. W. Graham Solomons, Craig Fryhle
Publisher: Wiley, John & Sons, Incorporated
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Chapter 6, Problem 7PP
PRACTICE PROBLEM 6.7
Rank the following carbocations in order of increasing stability:
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6.20 Account for the regioselectivity and stereoselectivity observed when 1-methylcyclopentene
is treated with each reagent.
(a) BH,
(b) Br₂ in H₂O
(c) Hg(OAc), in H₂O
6.21 Draw a structural formula for an alkene with the indicated molecular formula that
ion product (more than one alkene may give the
O PRACTICE PROBLEM 8.14
Starting with any needed alkene (or cycloalkene) and assuming you have deuterioace-
tic acid (CH3CO,D) available, outline syntheses of the following deuterium-labeled
compounds.s el en
olad lo nohibbs ad
CH3
(a) (CH3)2CHCH2CH,D
(b) (CH3),CHCHDCH3 (c)
(+ enantiomer)
(d) Assuming you also have available BD3:THF and CH3CO2T, can you suggest a
synthesis of the following?
hab erl
(+ enantiomer)he
imo
(nwond-ben)
CH3
H.
(asoholea)
PRACTICE PROBLEM 8.20
Specify the alkene and reagents needed to synthesize each of the following diols.
OH
HO-
(a)
(b)
(c)
HO.
н он
HO
(racemic)
(racemic)
Chapter 6 Solutions
Organic Chemistry
Ch. 6 - Prob. 1PPCh. 6 - Prob. 2PPCh. 6 - Prob. 3PPCh. 6 - Prob. 4PPCh. 6 - Prob. 5PPCh. 6 - PRACTICE PROBLEM 6.6
reactions that involve...Ch. 6 - PRACTICE PROBLEM 6.7 Rank the following...Ch. 6 - Prob. 8PPCh. 6 - Prob. 9PPCh. 6 - Prob. 10PP
Ch. 6 - Prob. 11PPCh. 6 - Prob. 12PPCh. 6 - Prob. 13PPCh. 6 - Prob. 14PPCh. 6 - Prob. 15PPCh. 6 - Prob. 16PPCh. 6 - Prob. 17PPCh. 6 - Prob. 18PPCh. 6 - Prob. 19PPCh. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Which SN1 reaction of each pair would you expect...Ch. 6 - Prob. 23PCh. 6 - Prob. 24PCh. 6 - Listed below are several hypothetical nucleophilic...Ch. 6 - Prob. 28PCh. 6 - Write conformational structures for the...Ch. 6 - 6.28 Consider the reaction of with .
(a) Would...Ch. 6 - Prob. 33PCh. 6 - Prob. 34PCh. 6 - Prob. 35PCh. 6 - Prob. 36PCh. 6 - 1-Bromobicyclo[2, 2,1] heptane is extremely...Ch. 6 - When ethyl bromide reacts with potassium cyanide...Ch. 6 - Prob. 41PCh. 6 - Prob. 42PCh. 6 - When the alkyl bromides (listed here) were...Ch. 6 - Prob. 44PCh. 6 - Prob. 45PCh. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - 6.42 The reaction of chloroethane with water in...Ch. 6 - Prob. 49PCh. 6 - Prob. 50PCh. 6 - Prob. 51PCh. 6 - Prob. 52PCh. 6 - 1-Bromo[2.2.1] bicycloheptane is unreactive toward...Ch. 6 - Open the computer molecular model tided...Ch. 6 - Prob. 56PCh. 6 - Consider the solvolysis reaction of (1S,...Ch. 6 - 2. Consider the following sequence of reactions,...Ch. 6 - Prob. 26PCh. 6 - Your task is to prepare isopropyl methyl ether by...Ch. 6 - Prob. 29PCh. 6 - 6.53 cis-4-Bromocyclohexanol racemic C6H10O...Ch. 6 - Prob. 31PCh. 6 - Explain the following observations: When...Ch. 6 - Prob. 38PCh. 6 - Prob. 1QCh. 6 - Prob. 2QCh. 6 - 6.3 A kinetic study yielded the following reaction...Ch. 6 - Prob. 4QCh. 6 - 6.5 Supply the missing reactants, reagents,...Ch. 6 - Which SN2 reaction will occur most rapidly....Ch. 6 - 6.7 Provide three-dimensional structures for the...
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- Please don't provide handwritten solution ...arrow_forwardDetermine which carbocation rearrangements you drew for Problem 7.36 produce a significantly more stable carbocationthan the reactant.arrow_forward6.26 There is an overall 29-fold difference in reactivity of 1-chlorohexane, 2-chlorohexane, and 3-chlorohexane toward potassium iodide in acetone. (a) Which one is the most reactive? Why? (b) Two of the isomers differ by only a factor of 2 in reactivity. Which two are these? Which one is the more reactive? Why?arrow_forward
- • PRACTICE PROBLEM 8.12 Treating a hindered alkene such as 2-methyl-2-butene with BH3:THE leads to the for- mation of a dialkylborane instead of a trialkylborane. When 2 mol of 2-methyl-2-butene is added to 1 mol of BH3, the product formed is bis(3-methyl-2-butyl)borane, nicknamed in reagent "disiamylborane." Write its structure. Bis(3-methyl-2-butyl)borane is a useful certain syntheses that require a sterically hindered borane. (The name “disiamyl" comes from "disecondary-iso-amyl," a completely unsystematic and unacceptable name. The name "amyl" is an old common name for a five-carbon alkyl group.) donbyarrow_forward• PRACTICE PROBLEM 6.6 S 2 reactions that involve substitution at a chirality center can be used to relate the configuration of one molecule to another, because we know the SN2 reaction will occur with inversion. (a) Illustrate how this is true by assigning R,S configurations to the 2-chlorobutane enantiomers based on the following data. [The configuration of (-)-2-butanol is given in Section 5.8C.] HO- (+)-2-Chlorobutane (-)-2-Butanol SN2 [a]3 = +36.00 (Enantiomerically pure) [a] = -13.52 (Enantiomerically pure) noin (b) When enantiomerically pure (+)-2-chlorobutane is allowed to react with potassium iodide in acetone in an SN2 reaction, the 2-iodobutane that is produced has a minus optical rotation. What is the configuration of (-)-2-iodobutane? Of (+)-2-iodobutane?arrow_forward4.1 9 (a) Define geometric isomerism (b) How does geometric isomerism occur in alkenes? (c) Draw the cis- and trans- geometric isomers (if they exist) of: (i) BrCH=CHBr (ii) CH,CH,CH=CHCH,CH, (iii) Br- CH₂ - CH₂ - Brarrow_forward
- (a) H. H. 6.44 Which of the following reactions will yield a racemic mixture of products? HCI HBr (a) (c) H2 H2 (b) (d) Pt Ptarrow_forwardRank by the stability of the alkene isomers. The most stable isomer is 1, while the least stable isomer is 5. (A) (B) (C) (D) (E)arrow_forwardRank the following alkenes in order of increasing stabilityarrow_forwardStarting with (S)-2-bromobutane, outline syntheses of each of the following compounds:• PRACTICE PROBLEM 6.19 (a) (R)-CH,CHCH,CH3 (c) (R)-CH,CHCH,CH3 OH bA-(2) ÓCH,CH3 SH muinolue for (b) (R)-CH,CHCH,CH3 (d) (R)-CH,CHCH,CH3 tho betallgo ÓCCH3 ŚCH3arrow_forwardReview Problem 5.2 Construct handheld models of the 2-butanols represented in Fig. 5.3 and demonstrate for yourself that they are not mutually superposable. (a) Make similar models of 2-bromo- propane. Are they superposable? (b) Is a molecule of 2-bromopropane chiral? (c) Would you expect to find enantiomeric forms of 2-bromopropane? H но OH H HO HH OH OH HO H CH CH CH C CH CH II II (a) (b) (c) Figure 5.3 (a) Three-dimensional drawings of the 2-butanol enantiomers I and II. (b) Models of the 2-butanol enantiomers. (c) An unsuccessful attempt to superpose models of I and II.arrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
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