How to use

Each question gives a starting material and a target product. Click reagents on the right to transform the current structure. Reach the target in the suggested number of steps.

Hints

Click Hint to highlight a valid next reagent on the shortest path. Use Undo to step back, Reset to return to the starting material, or click any structure in your route to branch from there.

Coverage

• Aliphatic: alkenes, halides, alcohols, carbonyls, acids, esters, nitriles, amines, amides, acyl chlorides
• Aromatic: benzene, phenol, phenylamine, benzoic acid + key transformations
• Multi-functional molecules: hydroxynitriles, hydroxyacids, halogenoalcohols, diols

Try this

Synthesise ethyl 2-hydroxy-2-methylpropanoate from propanone in 3 steps, or propanenitrile from ethanal in 3 steps (both A-level scheme questions).