Chemistry - ALCOHOL & ETHER Question with Solution | TestHub
Consider the following reaction sequence:
How many of the following statements are correct for the given reaction sequence?
(i) Reaction involves cyclization
(ii) Compound (II) can reduce HIO₄
(iii) Reaction involves formation of a carbocation with 6 α-H
(iv) Compound (II) can immediatetely make turbidity with concentrated HCl and anhydrous ZnCl₂
(v) Conversion of II to III occurs by catalytic removal of H₂ without an oxidising agent.
(vi) Compound (III) can react with Ag(NH₃)₂⁺ solution
Answer:
Solution:
Protonated epoxide opening and intramolecular alkene attack form a six-membered ring and a tertiary carbocation with six α-H. Water gives nonvicinal primary/tertiary diol II, which is periodate-negative and Lucas-positive. PCC oxidises the primary OH to aldehyde III, which gives Tollens test. Statements i, iii, iv and vi are true. Statement v describes catalytic H₂ removal without oxidant, not the PCC step. Total: 4.
Source solution:
