The complete, detailed mechanism for the given reaction is to be drawn, and the major product is to be drawn for the same reaction. Concept introduction: The triple bond in alkynes is sufficiently electron rich. The pi electrons in alkynes are easily accessible, and hence they readily undergo electrophilic addition reactions. Alkynes undergo acid catalyzed hydration reactions to yield a ketone . Step 1 is the electrophilic addition of proton, which produces a resonance-stabilized vinylic carbocation intermediate. In Step 2, water behaves as a nucleophile, attacking the positively charged carbon atom of that intermediate. Deprotonation in Step 3 produces the uncharged OH group, which is attached to an alkene carbon. The product of Step 3 is an enol. Under these conditions, the enol tautomerizes to the more stable keto form. Tetrafluoromethanesulfuric acid, also known as triflic acid, and 2, 2, 2-trifluoroethanol make it a strong acid that can be used as a catalyst in the acid-catalyzed hydration reactions of alkynes.

Question

1. Predict the organic product(s) of the following reactions. Assume excess of reagents unless otherwise noted. a) &l BH3 •THF b) 1) NaOH 2) H3O+ solve d) ala 1) EtMgBr 2) H3O+ e) H2N سكر CuLi NH2 1) SOCI2 2) EtMgBr 3) H3O+ NC H3O+ Δ

Answer 1

Question

Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 11, Problem 11.15P

Interpretation Introduction

Interpretation:

The complete, detailed mechanism for the given reaction is to be drawn, and the major product is to be drawn for the same reaction.

Concept introduction:

The triple bond in alkynes is sufficiently electron rich. The pi electrons in alkynes are easily accessible, and hence they readily undergo electrophilic addition reactions. Alkynes undergo acid catalyzed hydration reactions to yield a ketone. Step 1 is the electrophilic addition of proton, which produces a resonance-stabilized vinylic carbocation intermediate. In Step 2, water behaves as a nucleophile, attacking the positively charged carbon atom of that intermediate. Deprotonation in Step 3 produces the uncharged OH group, which is attached to an alkene carbon. The product of Step 3 is an enol. Under these conditions, the enol tautomerizes to the more stable keto form. Tetrafluoromethanesulfuric acid, also known as triflic acid, and 2, 2, 2-trifluoroethanol make it a strong acid that can be used as a catalyst in the acid-catalyzed hydration reactions of alkynes.

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1. Predict the organic product(s) of the following reactions. Assume excess of reagents unless otherwise noted. a) &l BH3 •THF b) 1) NaOH 2) H3O+ solve d) ala 1) EtMgBr 2) H3O+ e) H2N سكر CuLi NH2 1) SOCI2 2) EtMgBr 3) H3O+ NC H3O+ Δ

There are 48 pairs of students in the following table. Each pair has quantitatively determined the mass of taurine in a 250 mL can of the popular energy drink marketed as “Munster” using High Performance Liquid Chromatography (HPLC). The class results are presented below: QUESTION: Summarise and report these results including an indication of measurement uncertainty. In both calculation samples calculate if an outlier is present, max value, number of samples, mean, standard deviation, g (suspect), g (critical) and t (critical). Mass of Taurine (mg) Mass of Taurine (mg) (Table continued) 152.01 152.23 151.87 151.45 154.11 152.64 152.98 153.24 152.88 151.45 153.49 152.48 150.68 152.33 151.52 153.63 152.48 151.68 153.17 153.40 153.77 153.67 152.34 153.16 152.57 153.02 152.86 151.50 151.23 152.57 152.72 151.54 146.47 152.38 152.44 152.54 152.53 152.54 151.32…

Indicate the rate expressions for reactions that have order 0, 1, and 2.

Answer 2

Question

Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 11, Problem 11.15P

Interpretation Introduction

Interpretation:

The complete, detailed mechanism for the given reaction is to be drawn, and the major product is to be drawn for the same reaction.

Concept introduction:

The triple bond in alkynes is sufficiently electron rich. The pi electrons in alkynes are easily accessible, and hence they readily undergo electrophilic addition reactions. Alkynes undergo acid catalyzed hydration reactions to yield a ketone. Step 1 is the electrophilic addition of proton, which produces a resonance-stabilized vinylic carbocation intermediate. In Step 2, water behaves as a nucleophile, attacking the positively charged carbon atom of that intermediate. Deprotonation in Step 3 produces the uncharged OH group, which is attached to an alkene carbon. The product of Step 3 is an enol. Under these conditions, the enol tautomerizes to the more stable keto form. Tetrafluoromethanesulfuric acid, also known as triflic acid, and 2, 2, 2-trifluoroethanol make it a strong acid that can be used as a catalyst in the acid-catalyzed hydration reactions of alkynes.

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Answer 3

Question

Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 11, Problem 11.15P

Interpretation Introduction

Interpretation:

The complete, detailed mechanism for the given reaction is to be drawn, and the major product is to be drawn for the same reaction.

Concept introduction:

The triple bond in alkynes is sufficiently electron rich. The pi electrons in alkynes are easily accessible, and hence they readily undergo electrophilic addition reactions. Alkynes undergo acid catalyzed hydration reactions to yield a ketone. Step 1 is the electrophilic addition of proton, which produces a resonance-stabilized vinylic carbocation intermediate. In Step 2, water behaves as a nucleophile, attacking the positively charged carbon atom of that intermediate. Deprotonation in Step 3 produces the uncharged OH group, which is attached to an alkene carbon. The product of Step 3 is an enol. Under these conditions, the enol tautomerizes to the more stable keto form. Tetrafluoromethanesulfuric acid, also known as triflic acid, and 2, 2, 2-trifluoroethanol make it a strong acid that can be used as a catalyst in the acid-catalyzed hydration reactions of alkynes.

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Answer 4

Question

Definition Definition Organic compounds that have a carbonyl group, C = O, as their functional group. The carbonyl group in ketones is placed somewhere in the middle of the molecular structure, which means, the C=O is attached to two alkyl groups or benzene rings. Just like all other homologous series, the naming of ketones is done using a common suffix “-one”. The general molecular formula is C n H 2n O. Functional group of a ketone

Chapter 11, Problem 11.15P

Interpretation Introduction