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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Question
S.6. Write what are the products A, B and C formed in the following reaction steps.
![heat
1- BRCH 2COOEt, Zn
A
НА,
H2 , Pt
1-DIBAL-H
Etanal
bütanal
2- H30*
2-H20](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1d6a5030-e20c-4b0d-becd-cf21b183c190%2F9db13f9d-9229-4537-a50e-ccf8971afd7e%2Fpd8e78b.png&w=3840&q=75)
Transcribed Image Text:heat
1- BRCH 2COOEt, Zn
A
НА,
H2 , Pt
1-DIBAL-H
Etanal
bütanal
2- H30*
2-H20
Expert Solution
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Step 1
Reaction of 2-bromo ester with carbonyl compound in the presence of Zinc metal lead to formation of beta-hydroxyester, is known by special name reaction called as Reformatsky reaction .
In the above reaction reaction , ethanol when react with 2-bromo ester in presence to Zinc followed by hydrolysis led to formation of ethyl-3-hydroxybutanoate (A) . This when react with acid forms 3-hydroxybutanoic acid(B).
3-hydroxybutanoic acid when undergoes reduction with hydrogen + platinum forms 3-hydroxybutanal(C). This when undergoes futher reduction with DIBAL-H reduction of only alcohol occur giving final product butanal.
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