Student Value Bundle: Organic Chemistry, + OWLv2 with Student Solutions Manual eBook, 4 terms (24 months) Printed Access Card (NEW!!)
9th Edition
ISBN: 9781305922198
Author: John E. McMurry
Publisher: CENGAGE L
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Chapter 28.7, Problem 11P
Interpretation Introduction
Interpretation:
Determine the mechanism for cleavage reaction of the p-Dimethoxytrityl (DMT) ether.
Concept introduction:
The cleavage reaction of p-Dimethoxytrityl (DMT) takes place by the SN1 mechanism. The SN1 reaction is nucleophilic substitution reaction in which nucleophile is replaced by a leaving group. SN1 indicates unimolecular, substitution and nucleophilic reaction.
SN1 reaction takes place in following two steps:
- Leaving group leaves and leaves behind carbocation intermediate.
- Nucleophilic attack on the carbocation to form final product.
The stability of carbocation i.e. 3°>2°>1°, determines the rate of the reaction.
Given information:
The information given in the question is that the DMT ether is easily cleaved by the treatment with mild acid.
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3. Name this ether correctly.
H₁C
H3C
CH3
CH3
4. Show the best way to make the ether in #3 by a
Williamson Ether Synthesis.
Start from an alcohol or phenol.
5. Draw the structure of an example of a sulfide.
1. Which one(s) of these can be oxidized with CrO3 ?
(could be more than one)
a) triphenylmethanol
b) 2-pentanol
c) Ethyl alcohol
d)
CH3
2. Write in all the product(s) of this reaction. Label them
as "major" or "minor".
2-methyl-2-hexanol
H2SO4, heat
3) Determine if the pairs are constitutional isomers, enantiomers, diastereomers, or mesocompounds.
(4 points)
Chapter 28 Solutions
Student Value Bundle: Organic Chemistry, + OWLv2 with Student Solutions Manual eBook, 4 terms (24 months) Printed Access Card (NEW!!)
Ch. 28.1 - Draw the full structure of the DNA dinucleotide...Ch. 28.1 - Draw the full structure of the RNA dinucleotide...Ch. 28.2 - What sequence of bases on one strand of DNA is...Ch. 28.4 - Show how uracil can form strong hydrogen bonds to...Ch. 28.4 - What RNA base sequence is complementary to the...Ch. 28.4 - From what DNA base sequence was the following RNA...Ch. 28.5 - List codon sequences for the following amino...Ch. 28.5 - List anticodon sequences on the tRNAs carrying the...Ch. 28.5 - What amino acid sequence is coded by the following...Ch. 28.5 - What is the base sequence in the original DNA...
Ch. 28.7 - Prob. 11PCh. 28.7 - Prob. 12PCh. 28.SE - Identify the following bases, and tell whether...Ch. 28.SE - Identify the following nucleotide, and tell how it...Ch. 28.SE - Amine bases in nucleic acids can react with...Ch. 28.SE - The final step in DNA synthesis is deprotection by...Ch. 28.SE - The final step in the metabolic degradation of...Ch. 28.SE - One of the steps in the biosynthesis of a...Ch. 28.SE - One of the steps in the metabolic degradation of...Ch. 28.SE - One of the steps in the biosynthesis of uridine...Ch. 28.SE - Human brain natriuretic peptide (BNP) is a small...Ch. 28.SE - Human and horse insulin both have two polypeptide...Ch. 28.SE - The DNA of sea urchins contains about 32% A. What...Ch. 28.SE - The codon UAA stops protein synthesis. Why does...Ch. 28.SE - Which of the following base sequences would most...Ch. 28.SE - For what amino acids do the following...Ch. 28.SE - Prob. 27APCh. 28.SE - Prob. 28APCh. 28.SE - Draw the complete structure of the ribonucleotide...Ch. 28.SE - Draw the complete structure of the...Ch. 28.SE - Give an mRNA sequence that will code for the...Ch. 28.SE - Give an mRNA sequence that will code for the...Ch. 28.SE - What amino acid sequence is coded for by the...Ch. 28.SE - What amino acid sequence is coded for by the...Ch. 28.SE - Prob. 35APCh. 28.SE - Show the steps involved in a laboratory synthesis...Ch. 28.SE - Draw the structure of cyclic adenosine...Ch. 28.SE - Prob. 38AP
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