Question

2. Consider the five esters below with formula C 6H 120 2: on ih о thom (d) (e) (i) Whic h is/are made from a primary alcohol? (ii) Which is/are made from a secondary alcohol? (iii) Which is/are made from a tertiary alcohol? (iv) Which is/are made from a branched- chain alcohol? (v) Which is/are made from an alcohol containing a 3º carbon? (vi) Which is/are made from an acid containing a 3° carbon? (vii) Which is/are made from the smallest possible carboxylic acid? (viii) Which is/are made from an acid and an alcohol containing equal numbers of carbons? (ix) Which contain a chiral carbon ? NOTE: Write "none" if no structure satisfies the conditions stated.

Answer 1

. Made from Euteur Acid Alcohol as Hydrolysis nix Hydrolysia Hon not Ои HO lor ОН Es la not no 2 би Ой Ho- no-CH3 ои ☺ py frimory alcohol 2 - Secondary alcohol z testiary alcohol i) As clear from the structures of alcohols estu made from í alcohol = b. d and e. Eetu made from secondory alcohet añe lis niy Estu made from tertiary alcohol is (a) iv> Estu made from branched chain alcohol is (a) - since, alcohd contains branching at zo carbon. - Alcohol containing 3 carbon is present in (a) viz answer hence Co Acid containing 3° carbon are on and olon Hence correct answer is (d) lces vii) Lowest possible cooboxylic add is vion (formic acid) - ester made from it is (a. vilily The pair having equal number of c- atoms in - alcohol & carboxylic acid is on and not 3-corbon atons] 3-carbon atoms Hence the correct answer is ester (C) ixy to A chiral carbon is that carbon that is atlached four different groups. In ester ces - the carbon marked with (*) . is chiral since it is attache -d to 4 different group. ch