Solve Q3 and Q4 with detailed expalantion 3. Using curved arrows, draw the mechanism of both steps involved in the synthesis ofisoxazole (5). Why is a base (triethyl amine) required in the first step of the pathway?What is the byproduct (4) of this step?NH2CI-NHH3C-PhH3C--CH314RobinsonH3PO4Gabriel-N-H3C-CH3H2054. Using curved arrows, draw the mechanism of both steps involved in the syntheticpathway to thiazole (3)..CISHeatHeat-N-R1R--R1R1H2N- HCIò HNS.134If thiourea (5) was used in the Hantzsch synthesis instead of thioamide (2), what wouldbe the structure of the resulting thiazole (6)?.CIНeat-N--NH2H2NR1- HCI16

"Since you have asked two questions, we will solve the first question only for you. If you want…

3. Using curved arrows, draw the mechanism of both steps involved in the synthesis of isoxazole (5). Why is a base (triethyl amine) required in the first step of the pathway? What is the byproduct (4) of this step? NH2 CI. -NH H3C- -Ph H3C- -CH3 + 1 2 3 4 Robinson H3PO4 Gabriel -N + H20 H3C- -CH3 5

3. Using curved arrows, draw the mechanism of both steps involved in the synthesis of isoxazole (5). Why is a base (triethyl amine) required in the first step of the pathway? What is the byproduct (4) of this step? NH2 CI. -NH H3C- -Ph H3C- -CH3 + 1 2 3 4 Robinson H3PO4 Gabriel -N + H20 H3C- -CH3 5

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

Solve Q3 and Q4 with detailed expalantion

3. Using curved arrows, draw the mechanism of both steps involved in the synthesis of
isoxazole (5). Why is a base (triethyl amine) required in the first step of the pathway?
What is the byproduct (4) of this step?
NH2
CI
-NH
H3C-
Ph
H3C-
-CH3
1
4
Robinson
H3PO4
Gabriel
-N-
H3C-
CH3
H20
5
4. Using curved arrows, draw the mechanism of both steps involved in the synthetic
pathway to thiazole (3).
.CI
S
Heat
Heat
-N
-R1
R-
-R1
R1
H2N
- HCI
ò HN
S.
1
3
4
If thiourea (5) was used in the Hantzsch synthesis instead of thioamide (2), what would
be the structure of the resulting thiazole (6)?
.CI
Нeat
-N-
-NH2
H2N
R1
- HCI
1
6

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