Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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### Question 11

#### Give the product.

*Instructions*: Select the appropriate product formed by treating the given reactant with the reagents in the provided sequence.

#### Reactant:
A cyclohexene ring with an ethyl group attached at the 1-position.

#### Reagents:
1. \( BH_3 \)
2. \( H_2O_2 \), \( NaOH \)

#### Products:
Select one of the following options as the correct product:

(a) Image depicting a cyclohexane ring with an OH group attached to the carbon adjacent to the one with the ethyl group, in a cis relationship.
   
(b) Image depicting a cyclohexane ring with an OH group attached to the carbon adjacent to the one with the ethyl group, in a trans relationship.
   
(c) Image depicting a cyclohexane ring with an OH group attached to the same carbon as the ethyl group, in a cis relationship.
   
(d) Image depicting a cyclohexane ring with an OH group attached to the same carbon as the ethyl group, in a trans relationship.

##### Answer Options:
- \( \circ \) a
- \( \circ \) b
- \( \circ \) c
- \( \circ \) d

*Note: Moving to another question will save this response.*

#### Explanation:
The reaction mechanism in question involves hydroboration-oxidation, which results in syn-addition of water across the double bond in a manner that leads to the less substituted carbon obtaining the hydroxyl group and the more substituted carbon obtaining a hydrogen.

In this context, the correct product can be identified considering these regio- and stereochemical preferences.
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Transcribed Image Text:### Question 11 #### Give the product. *Instructions*: Select the appropriate product formed by treating the given reactant with the reagents in the provided sequence. #### Reactant: A cyclohexene ring with an ethyl group attached at the 1-position. #### Reagents: 1. \( BH_3 \) 2. \( H_2O_2 \), \( NaOH \) #### Products: Select one of the following options as the correct product: (a) Image depicting a cyclohexane ring with an OH group attached to the carbon adjacent to the one with the ethyl group, in a cis relationship. (b) Image depicting a cyclohexane ring with an OH group attached to the carbon adjacent to the one with the ethyl group, in a trans relationship. (c) Image depicting a cyclohexane ring with an OH group attached to the same carbon as the ethyl group, in a cis relationship. (d) Image depicting a cyclohexane ring with an OH group attached to the same carbon as the ethyl group, in a trans relationship. ##### Answer Options: - \( \circ \) a - \( \circ \) b - \( \circ \) c - \( \circ \) d *Note: Moving to another question will save this response.* #### Explanation: The reaction mechanism in question involves hydroboration-oxidation, which results in syn-addition of water across the double bond in a manner that leads to the less substituted carbon obtaining the hydroxyl group and the more substituted carbon obtaining a hydrogen. In this context, the correct product can be identified considering these regio- and stereochemical preferences.
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