Unit 1:
Pericyclic Reactions I[12 h]Molecular orbital symmetry. Frontier orbitals of ethylene, 1,3-butadiene, 1,3,5-hexatriene and allyl system. Classification of pericyclic reactions. Electrocyclic reactions con rotation and dis rotation in 4n, 4n+2, allyl systems and secondary effects. Electrocyclization of charged species and heteroatomic trienes.
Unit 2:
Pericyclic Reactions II[14 h]Cycloaddition reactions – antrafacial and suprafacial additions, 4n and 4n+2 systems with (2+2) and (4+2) cycloadditions. Effect of stereochemistry and substituents on the rate of cycloadditions, 1,3-dipolar cycloadditions and cheleotropic reactions. Sigmatropic rearrangements – suprafacial and antrafacial shifts – [1,2]-sigmatropic shifts involving carbon moieties. [m,n] and [m,m] sigmatropic hydrogen shifts. Claisen, Cope, Wittig and azaWittig rearrangements, fluxional tautomerism. Ene reactions.
Unit 3:
Photochemistry I[10 h]Photochemistry of alkenes- intramolecular reactions, geometrical isomerism, cyclisation reactions. Photochemical rearrangements – 1,4 and 1,5- dienes. Photochemistry of aromatic compounds – isomerizations, additions, substitutions and photo reduction.
Unit 4:
Photochemistry II[14 h]Photochemistry of carbonyl compounds – Norrish type I and type II, and PatternoBuchi reactions. Intramolecular reactions of carbonyl compounds saturated cyclic and acyclic, ?,? and ?,?- unsaturated compounds, cyclohexanone, cyclohexadienones. Intermolecular cycloaddition reactions and dimerisations. Photo-Fries reactions and rearrangements, Lumiketone rearrangement and Barton reaction. Photo reduction of carbonyl compounds. Singlet molecular oxygen reactions. Photostabilizers.
Unit 5:
Heterocyclic Compounds [10 h]Biologically important heterocycles, Hantzsch-Widman system for monocyclic, fused and bridged heterocycles. Aromaticity of one, two, three, four, five, six and fused heterocycles. Physical and Chemical properties of various heterocyclic compounds.