Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Concept explainers

Reactive Intermediates
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Hydride Shift
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Vinylic Carbocation
A carbocation where the positive charge is on the alkene carbon is known as the vinyl carbocation or vinyl cation. The empirical formula for vinyl cation is C2H3+. In the vinyl carbocation, the positive charge is on the carbon atom with the double bond t…
Cycloheptatrienyl Cation
It is an aromatic carbocation having a general formula, [C7 H7]+. It is also known as the aromatic tropylium ion. Its name is derived from the molecule tropine, which is a seven membered carbon atom ring. Cycloheptatriene or tropylidene was first synthes…
Stability of Vinyl Carbocation
Carbocations are positively charged carbon atoms. It is also known as a carbonium ion.
Question

SN1 reactions are better performed in protic solvents. Explain
why the researchers could not perform the reaction using 100% water as solvent instead
of 50% aqueous acetone.  

Allyl Halide k(x10"min-) Ea Lk cal 012231+ 0.0041 EntryH 212 Cotts CHLBF Cots CHl2 C6 Hs CHCIB. C6 5.684 0.085 19.1 2,214±01037 31.08±0.19 23.3 21.9 110.5I o19 20.5 C6 Hs CCz Br 2122 141 1912 The reaction was done e in Sol. aqueons acetone at soE.Shown below is the eaction Scheme for entry #1 H20 acetone
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Transcribed Image Text:Allyl Halide k(x10"min-) Ea Lk cal 012231+ 0.0041 EntryH 212 Cotts CHLBF Cots CHl2 C6 Hs CHCIB. C6 5.684 0.085 19.1 2,214±01037 31.08±0.19 23.3 21.9 110.5I o19 20.5 C6 Hs CCz Br 2122 141 1912 The reaction was done e in Sol. aqueons acetone at soE.Shown below is the eaction Scheme for entry #1 H20 acetone
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