Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Question
Chapter 15.5, Problem 10P
Interpretation Introduction
Interpretation:
Thiamine or vitamin B1, contains a positively charged five membered nitrogen-sulfur heterocycle ring called a thiazolium ring. Why the thiazolium ring is
Concept introduction:
According to Huckel’s rule a planar, cyclic conjugated system will be aromatic if it contains (4n+2)Ï€ electrons. Systems with 4nÏ€ electrons will be antiaromatic.
To explain:
Why the thiazolium ring in Thiamine or vitamin B1 is aromatic.
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A solution contains 0.097 M Ce3+, 1.55x10-3 M Ce4+, 1.55x10-3 M Mn2+, 0.097 M MnO4-, and 1.00 M HClO4 (F= 9.649 x 104 C/mol).
a) Write a balanced net reaction that can occur between species in this solution.
b) Calculate deltaG0 and K for the reaction.
c) Calculate E and deltaG for the conditions given.
Ce4+ + e- = Ce3+ E0= 1.70 V
MnO4- + 8H+ + 5e- = Mn2+ + 4H2O E0= 1.507 V
1. Provide a step-by-step mechanism for formation of ALL STEREOISOMERS in
the following reaction.
Na HCO3 (Sodium bicarbonate, baking soda) is not soluble in CH2Cl2. The powder is
a weak base used to neutralize strong acid (pKa < 0) produced by the reaction.
Redraw the product to show the configuration(s) that form at C-2 and C-4.
Br2
OH
CH2Cl2
Na* HCO3
Br
HO
OH
+ Na Br +
2. Specify the solvent and reagent(s) required to carry out each of the following FGI. If
two reagent sets must be used for the FGI, specify the solvent and reagent(s) for each
reagent set. If a reaction cannot be carried out with reagents (sets)
class, write NP (not possible) in the solvent box for reagent set #1.
Use the letter abbreviation for each solvent; use a number abbreviation for reagent(s).
Solvents: CH2Cl2 (A);
H₂O (B);
Reagents:
HBr (1);
R₂BH (6);
H2SO4 (2);
CH3OH (C);
Br₂ (3);
CH3CO₂H (D)
NaHCO3 (4);
Hg(OAc)2 (5);
H₂O2/HO (7);
NaBH4 (8)
Reagent Set #1
Reagent Set #2
FGI
+ enant
OH
Solvent Reagent(s) Solvent Reagent(s)
Chapter 15 Solutions
Organic Chemistry
Ch. 15.1 - Prob. 1PCh. 15.1 - Give IUPAC names for the following compounds:Ch. 15.1 - Prob. 3PCh. 15.2 - Pyridine is a flat, hexagonal molecule with bond...Ch. 15.3 - Prob. 5PCh. 15.4 - Draw the five resonance structures of the...Ch. 15.4 - Prob. 7PCh. 15.4 - Prob. 8PCh. 15.5 - Prob. 9PCh. 15.5 - Prob. 10P
Ch. 15.6 - Prob. 11PCh. 15.6 - How many electrons does each of the four nitrogen...Ch. 15.SE - Give IUPAC names for the following substances (red...Ch. 15.SE - All-cis cyclodecapentaene is a stable molecule...Ch. 15.SE - 1, 6-Methanonaphthalene has an interesting 1H NMR...Ch. 15.SE - Prob. 16VCCh. 15.SE - Azulene, an isomer of naphthalene, has a...Ch. 15.SE - Give IUPAC names for the following compounds:Ch. 15.SE - Draw structures corresponding to the following...Ch. 15.SE - Prob. 20APCh. 15.SE - Prob. 21APCh. 15.SE - Draw and name all possible aromatic compounds with...Ch. 15.SE - Propose structures for aromatic hydrocarbons that...Ch. 15.SE - Look at the three resonance structures of...Ch. 15.SE - Prob. 25APCh. 15.SE - Prob. 26APCh. 15.SE - Look at the five resonance structures for...Ch. 15.SE - Prob. 28APCh. 15.SE - 3-Chlorocyclopropene, on treatment with AgBF4,...Ch. 15.SE - Prob. 30APCh. 15.SE - Prob. 31APCh. 15.SE - Prob. 32APCh. 15.SE - Which would you expect to be most stable,...Ch. 15.SE - How might you convert 1, 3, 5, 7-cyclononatetraene...Ch. 15.SE - Calicene, like azulene (Problem 15-17), has an...Ch. 15.SE - Pentalene is a most elusive molecule that has been...Ch. 15.SE - Prob. 37APCh. 15.SE - Prob. 38APCh. 15.SE - Compound A, C8H10, yields three substitution...Ch. 15.SE - Prob. 40APCh. 15.SE - Propose structures for compounds that fit the...Ch. 15.SE - Prob. 42APCh. 15.SE - Prob. 43APCh. 15.SE - N-Phenylsydnone, so-named because it was first...Ch. 15.SE - Prob. 45APCh. 15.SE - Prob. 46APCh. 15.SE - Prob. 47APCh. 15.SE - Propose a structure for a molecule C14H12 that has...Ch. 15.SE - The proton NMR spectrum for a compound with...Ch. 15.SE - The proton NMR spectrum of a compound with formula...Ch. 15.SE - Aromatic substitution reactions occur by addition...Ch. 15.SE - Prob. 52APCh. 15.SE - Consider the aromatic anions below and their...Ch. 15.SE - After the reaction below, the chemical shift of Ha...Ch. 15.SE - Prob. 55APCh. 15.SE - Azo dyes are the major source of artificial color...
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- 2. Specify the solvent and reagent(s) required to carry out each of the following FGI. If two reagent sets must be used for the FGI, specify the solvent and reagent(s) for each reagent set. If a reaction cannot be carried out with reagents (sets) class, write NP (not possible) in the solvent box for reagent set #1. Use the letter abbreviation for each solvent; use a number abbreviation for reagent(s). Solvents: CH2Cl2 (A); Reagents: H₂O (B); CH3CO₂H (D) NaHCO3 (4); Hg(OAc)2 (5); HBr (1); R₂BH (6); H2SO4 (2); CH3OH (C); Br₂ (3); H₂O₂ / HO- (7); NaBH4 (8) Reagent Set #1 Reagent Set #2 FGI OH - α-α Br + enant Solvent Reagent(s) Solvent Reagent(s)arrow_forwardBased on concepts from Lecture 3-5, which of the following ionic compounds should be most soluble in water? Group of answer choices MgO BeO CaO BaOarrow_forwardFrom an energy standpoint, which two process - in the correct order - are involved in the dissolving of an ionic compound crystal? Group of answer choices Water coordination to the ions followed by sublimation into the gas phase Sublimation of the crystal into gas-phase ions followed by water coordination to the ions Ion dissociation from the crystal followed by water coordination to the ions Water coordination to the ions followed by ion dissociation from the crystalarrow_forward
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