Question

Organic Chemistry

Respondus LockDown Browser -201 ussions Group Discussion - Session 5 Group Discussion - Session 5 All Sections 1. This is an acid catalyzed reaction that yields an hemicacetal. This reaction is intramolecular. For this week's discussion, choose the correct answer and write out the steps necessary for arriving to the correct in the reply section. Please use slides 41-42 and 44 to help you answer this question. H2$04 2. How many alpha hydrogens are in the following molecule? Search entries or author Unread

Answer 1

1.Here acid catalised cyclization occur.The answer is---3.

Lone pair of oxygen attack acid and take H^T from acid hence prolongation of carbonyl oxygen occur lone pair of hydroxyl oxygen attack to electro mimic carbonyl carbon and cyclination take place and formation of six member ring The cyclination of H_2 so_4 (i. e Hs^-_4) formed in 1st step act as base and take H^+ forming He machete