Category: Named Reactions in Organic Chemistry

The Diels Alder reaction is a [4+2] cycloaddition reaction between a conjugated diene and a dienophile. Here we explain its mechanism, orbital theory, stereoselectivity and endo rule using 3D models and examples. 3D model: Diene (top – ignore the tilt, it’s drunk) and dienophile (bottom) approaching for a Diels Alder reaction. Can you see the…

The Wittig reaction is an olefination reaction in organic chemistry. Let’s explain its mechanism and stereoselectivity using some examples and 3D models! Interactive 3D model of methylenetriphenylphosphorane (simplest Wittig reagent) Wittig reaction mechanism Step 1 – Wittig reagent generation: Every Wittig reaction is based on a carbonyl compound and a Wittig reagent. This is a…