1. The ketone below is reacted with NaBH4. The products formed from this reaction are: i a. The products are a pair of enantiomers, formed as a racemic mixture. b. The products are a pair of diastereomers, formed in unequal amounts. c. The products are a pair of enantiomers, formed in unequal amounts. d. A meso compound is formed. 2. Rank the following carboxylic acid derivatives from least to most reactive in nucleophilic acyl substitution reactions l l u l NR₂ 3. Rank the following compounds from highest to lowest oxidation state at the carbon containing the carbon oxygen bond он i l R OH R R 4. Circle the functional groups that could be reduced with NaBH4 l l R H R R R OH

1. The ketone below is reacted with NaBH4. The products formed from this reaction are: i a. The products are a pair of enantiomers, formed as a racemic mixture. b. The products are a pair of diastereomers, formed in unequal amounts. c. The products are a pair of enantiomers, formed in unequal amounts. d. A meso compound is formed. 2. Rank the following carboxylic acid derivatives from least to most reactive in nucleophilic acyl substitution reactions l l u l NR₂ 3. Rank the following compounds from highest to lowest oxidation state at the carbon containing the carbon oxygen bond он i l R OH R R 4. Circle the functional groups that could be reduced with NaBH4 l l R H R R R OH

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Reactions at the Alpha Carbon Atom

The position next to the ketone or aldehyde functional group is termed as alpha position and the reaction which occurs at alpha position is called alpha substitution reaction. In an alpha substitution reaction, the alpha proton atom is substituted by an electrophile by the formation of an enol intermediate or enolate ion intermediate. Most of the carbonyl compounds go through an alpha substitution reaction.

Question

1. The ketone below is reacted with NaBH4. The products formed from this reaction are:
a. The products are a pair of enantiomers, formed as a racemic mixture.
b. The products are a pair of diastereomers, formed in unequal amounts.
c. The products are a pair of enantiomers, formed in unequal amounts.
d. A meso compound is formed.
2. Rank the following carboxylic acid derivatives from least to most reactive in nucleophilic
acyl substitution reactions
l l
R
NR₂
*OR* R
'R' R
3. Rank the following compounds from highest to lowest oxidation state at the carbon
containing the carbon oxygen bond
OH
l l l l
R
OH
R
4. Circle the functional groups that could be reduced with NaBH4
l l l
R
H
R
له
OH

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