Organic Reaction Predictor

The Organic Reaction Predictor identifies the major product of a common organic chemistry reaction based on your chosen reactant and conditions — useful for students checking their work or reviewing reaction outcomes. Select your reactant type (such as alkene, alcohol, or alkyl halide), number of carbons, and substitution pattern, then choose your reagent, temperature, and solvent to get the major product along with the reaction type, mechanism, stereochemistry, and any minor products. Also try the IUPAC Naming Calculator.

Results

Major Product

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Reaction Type

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Mechanism

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Stereochemistry

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Minor Products

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Results Table

Frequently Asked Questions

How accurate are the reaction predictions?

The predictor uses established organic chemistry rules and mechanisms. While it covers most common reactions accurately, complex multi-step reactions or unusual conditions may require expert analysis. See also our Hydroxyl Value Calculator.

What types of reactions can this tool predict?

The tool predicts common organic reactions including nucleophilic substitution (SN1/SN2), elimination (E1/E2), addition reactions, oxidation-reduction, and aromatic substitution reactions.

Why do I need to specify substitution pattern?

The substitution pattern (primary, secondary, tertiary) determines which mechanism the reaction will follow (SN1 vs SN2, E1 vs E2), affecting both the products formed and stereochemistry.

How do temperature and solvent affect the reaction?

Temperature and solvent influence reaction rates and selectivity. Higher temperatures favor elimination over substitution, while polar protic solvents favor SN1 and E1 mechanisms. You might also find our Iodine Value Calculator useful.

What does stereochemistry information tell me?

Stereochemistry describes the 3D arrangement of atoms in the products. SN2 reactions show inversion, SN1 shows racemization, and elimination reactions can produce different alkene isomers.

Can this tool help with reaction mechanism problems?

Yes, the tool identifies the likely mechanism (SN1, SN2, E1, E2) based on your inputs and provides information about intermediate steps and stereochemical outcomes.

What are minor products and why are they important?

Minor products are side products that form in smaller amounts. Understanding them helps predict reaction yields and plan purification strategies in synthetic chemistry.