Molecular Structure and Bonding

p Electrons in Conjugated Organic Molecules

Lecture 6 Synopsis

Conservation of Orbital Symmetry

The Woodward-Hoffmann rules and Ring Opening

Learning Objectives:

· Discussion of conrotatory and disrotatory ring opening of cyclobutene to form 1,3-butadiene.

· Stereospecificity of thermal and photo-assisted ring opening processes.

· The Woodward-Hoffmann rules for cycloaddition reactions

· Introduction to modern computational chemistry and molecular modelling.

Pericyclic reactions and electrocyclic reaction