4. When the following reaction occurs, the step of the currently accepted mechan

Question

4. When the following reaction occurs, the step of the currently accepted mechanism is probably (a) step 1. (c) step 3. (b) Step 2. (d) Step 4. 1. In the most stable chair conformation of the how many ring hydrogens are axial? (Hint 1: Models! Hint 2 The oxygen carries no protons.) 5. What is the proper IUPAC name of the following molecule? (a) 3 (b)4 (c)5 () 6 2. How many tertiary alcohols are present in the following group? 1-o 6. Which of the following drawings representi(s) a radical initiation step? (a)0 (b)1 (c)2 (0.3 e Br 3. Which alcohol will probably not undergo a hydride or alkyl shift on treatment acid? (d) both a and b (c) OH (d)

Explanation / Answer

1) Ans- ( b)-4

As we observed structure clearly indicate three CH2 has one axial hydrogen and rest one from one Methyl containing carbon (C3)

2) ans- (b) 1

Only this hydroxy attached carbon containing three substituent

3) and- B

Except B all compound could show methyl shift but here after elimination stable aliens formed which seems to remain as it is.

4) ans - (A) step-1

This step involves formation of carbonation, so this is rate determining step.

5) ans - (A)

5-Methyl-4-hexen-2-ol

6) ans-(d)

Both a &b

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