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Dihydropyran is synthesized by treating tetrahydrofurfuryl alcohol with an

Organic Chemistry | 7th Edition | ISBN: 9781133952848 | Authors: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote ISBN: 9781133952848 483

Solution for problem 10.39 Chapter 10

Organic Chemistry | 7th Edition

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Organic Chemistry | 7th Edition | ISBN: 9781133952848 | Authors: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Organic Chemistry | 7th Edition

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Problem 10.39

Dihydropyran is synthesized by treating tetrahydrofurfuryl alcohol with an arenesul-fonic acid, ArSO3H. Propose a mechanism for this conversion.

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April 12 &14 th DNA Packaging: -­‐ DNA is very large (human genome is about 3 billion base pairs), but has to packaged in a very small cell. -­‐ Chromatin is packaged to form chromosomes. Nucleosomes get packaged into a small fiber, then that is coiled further into filaments. DNA Properties: -­‐ Hyperchromic effect: denatured, single stranded DNA absorbs light much better than native double stranded DNA. -­‐ Melting Curve: at half of the maximum absorbance on an absorbance vs temperature graph, this midpoint is the “melting temperature”. This depends on ion concentration ( salt ins stabilize negative charges on DNA and increase melting point), pH of solution, and mole fraction of G-­‐C bp. -­‐ Denatured DNA can renature if it is cooled back below its melting point. Nucleic Acids & stabilization -­‐ Stacking interactions: they are hydrophobic & van der Waals forces between aromatic portions

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Chapter 10, Problem 10.39 is Solved
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Textbook: Organic Chemistry
Edition: 7
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
ISBN: 9781133952848

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Dihydropyran is synthesized by treating tetrahydrofurfuryl alcohol with an