ACH 2C 07 Semester II Organic Chemistry II (3 Credits)

C.O.1: Describe the reactivity, the stereo chemical aspects and various reactions possible with carbonyl compounds.

UNIT I Reactions of Carbonyl Compounds Reactivity of carbonyl groups in aldehydes, ketones, carboxylic acids, esters and acid chlorides with nucleophilic reagents (Carbon, Hydrogen and Nitrogen nucleophiles). Carbonyl α-substitution reactions:- Keto- enol tautomerism. Reactivity of enols, mechanism of α-substitution reactions. α-Halogenation of aldehydes, ketons and carboxylic acids. HellVolhard- Zelinski reaction. Acidity of α hydrogen atom- enolate ion formation. Reactivity of enolate ions. Halogenation of enolate ions- haloform reaction. Alkylation of enolate ions. Aldol and related reactions, Claisen ester condensation, Darzen reaction, Dieckmann, Perkin and Prins reactions. Mannich reaction. Alkylation using enamine. Alkylation of carbon nucleophiles by conjugate addition, Michael reaction, Robinson anulation. The enamine and imine anion. Phosphorous ylides and Wittig reaction.