Practice problems

Organic chemistry practice problems

Every mechanism and practice question in Orgo 1 and Orgo 2, each with its full worked solution. Search by reaction, reagent or #tag, or browse by topic.

Start here: high-yield mechanisms, drawn step by step

Tap one to draw it yourself with every arrow checked, or watch the steps. No sign-up.

  • tert-Butyl bromide hydrolysis

    Free solution3 steps

  • 1-bromobutane from butan-1-ol and HBr

    Free solution2 steps

  • 1-Chloropropane from propan-1-ol and SOCl2

    Free solution3 steps

  • Tosylation of cyclohexanol with TsCl and pyridine

    Free solution2 steps

  • Force elimination at a primary carbon

    Free solution1 step

  • Protonate an exocyclic double bond

    Free solution2 steps

  • Oxymercuration–demercuration of 1-methylcyclohexene

    Free solution5 steps

  • 1-Bromohexane from hex-1-ene: anti-Markovnikov HBr

    Free solution4 steps

  • OsO4 dihydroxylation of cyclopentene gives cis-cyclopentane-1,2-diol

    Free solution3 steps

  • 6-Oxoheptanal from 1-methylcyclohexene

    Free solution6 steps

  • (Z)-Hex-3-ene by Lindlar hydrogenation

    Free solution3 steps

  • Mercury-catalysed hydration of hex-1-yne

    Free solution7 steps

Your homework, drawn like these

Snap any reaction from your homework or textbook. It becomes the mechanism, every arrow checked.

Scan a problem free

Organic Chemistry 1 practice problems

Structure and electron accounting

Molecular shape and stereochemistry

Reasoning about reactions

Unsaturated molecules and radicals

Molecular evidence and structure

Naming organic compounds

Exam review

Stereochemistry

Organic Chemistry 2 practice problems

Aromatic systems

Functional-group transformations

Carbonyl and enolate chemistry

Carboxyl and acyl chemistry

Nitrogen and biological molecules

Naming organic compounds

Carbonyl chemistry

Exam review

Synthesis planning

Stuck on your own homework?

Snap it — first scan free, no sign-up