GATE CY topic:organic-synthesis PYQs & Answers — Page 6

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Questions 51–60 of 116. Imported answers require independent review unless marked reviewed.

Topic practice 116 questionsPage 6 of 12

The CORRECT reagent(s) for the given reaction is(are)

Your answerSelect all correct options. You can choose more than one.

, NaOH

Diagram for Chemistry question 26 (figure 2)

DIBAL-H, then mCPBA

·pyridine, Me

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The major product P obtained in the following reaction sequence is

Your answerChoose one option.

Diagram for Chemistry question 36 (figure 2)

Diagram for Chemistry question 36 (figure 3)

Diagram for Chemistry question 36 (figure 4)

Diagram for Chemistry question 36 (figure 5)

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The major product Q in the given reaction is

Your answerChoose one option.

Diagram for Chemistry question 37 (figure 2)

Diagram for Chemistry question 37 (figure 3)

Diagram for Chemistry question 37 (figure 4)

Diagram for Chemistry question 37 (figure 5)

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The major product P in the following reaction is

Your answerChoose one option.

Diagram for Chemistry question 38 (figure 2)

Diagram for Chemistry question 38 (figure 3)

Diagram for Chemistry question 38 (figure 4)

Diagram for Chemistry question 38 (figure 5)

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The major product P in the reaction sequence is

Your answerChoose one option.

Diagram for Chemistry question 39 (figure 2)

Diagram for Chemistry question 39 (figure 3)

Diagram for Chemistry question 39 (figure 4)

Diagram for Chemistry question 39 (figure 5)

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The major products P and Q in the following reaction sequence are

Your answerChoose one option.

P =

Diagram for Chemistry question 40 (figure 2)

; Q =

Diagram for Chemistry question 40 (figure 3)

P =

Diagram for Chemistry question 40 (figure 4)

; Q =

Diagram for Chemistry question 40 (figure 5)

P =

Diagram for Chemistry question 40 (figure 6)

; Q =

Diagram for Chemistry question 40 (figure 7)

P =

Diagram for Chemistry question 40 (figure 8)

; Q =

Diagram for Chemistry question 40 (figure 9)

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The major products M and N in the given reaction sequence are

Your answerChoose one option.

M =

Diagram for Chemistry question 41 (figure 2)

; N =

Diagram for Chemistry question 41 (figure 3)

M =

Diagram for Chemistry question 41 (figure 4)

; N =

Diagram for Chemistry question 41 (figure 5)

M =

Diagram for Chemistry question 41 (figure 6)

; N =

Diagram for Chemistry question 41 (figure 7)

M =

Diagram for Chemistry question 41 (figure 8)

; N =

Diagram for Chemistry question 41 (figure 9)

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The reaction(s) that yield(s) 3-phenylcyclopentanone as the major product is(are)

Your answerSelect all correct options. You can choose more than one.

2-cyclopentenone; (a) Ph₂CuLi; (b) H₃O⁺

2-cyclopentenol; PhI, cat. Pd(OAc)₂; KOAc, DMF, 60 °C

2-cyclopentenone; (a) PhLi; (b) H₃O⁺

2-cyclopentenone; (a) LDA, THF, -78 °C, PhSeBr; (b) H₂O₂

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The reaction(s) that yield(s) M as the major product is(are)

Your answerSelect all correct options. You can choose more than one.

Diagram for Chemistry question 52 (figure 2)

Diagram for Chemistry question 52 (figure 3)

Diagram for Chemistry question 52 (figure 4)

Diagram for Chemistry question 52 (figure 5)

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The major product formed in the following reaction is:

Your answerChoose one option.

Diagram for Chemistry question 2 (figure 2)

Diagram for Chemistry question 2 (figure 3)

Diagram for Chemistry question 2 (figure 4)

Diagram for Chemistry question 2 (figure 5)

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GATE CY topic:organic-synthesis PYQs

Question 26

Question 36

Question 37

Question 38

Question 39

Question 40

Question 41

Question 51

Question 52

Question 2