zum Directory-modus

additionZoomA-Z

Subject - Organic Chemistry

In organic chemistry, addition is an important reaction type in which a molecular fragment is added to an unsaturated compound resulting in a lower degree of unsaturation in the product. For example, addition of a hydrogen halide to the C=C double bond of an unsaturated hydrocarbon yields a saturated single-substituted hydrocarbon halide.

Besides alkenes and alkynes, substrates with carbon-heteroatom double and triple bonds are part of the group of unsaturated compounds and behave similarly. Addition reactions can proceed regioselectively or regiospecifically as well as stereoselectively or stereospecifically. Addition to the double bond from the same side of the substrate is called syn-addition while addition from the opposite side is called anti-addition.

See also: hydration

Recommended Learning Units

Elucidation of Reaction Mechanisms in Organic Chemistry (overall)Level 3100 min.

ChemistryOrganic ChemistryReaction Mechanisms

This learning unit deals with the principles and methods of elucidating organic reaction mechanisms. Topics: Identification of products and intermediates, isotopic labeling experiments, stereochemical investigations, kinetic isotope effects, crossover experiments, and investigation of reaction kinetics.

Elucidation of Reaction Mechanisms - Investigation of StereochemistryLevel 230 min.

ChemistryOrganic ChemistryReaction Mechanisms

This learning unit describes the role of the investigation of stereochemistry in the elucidation of organic reaction mechanisms.

Radical Additions and Substitutions with AlkenesLevel 240 min.

ChemistryOrganic ChemistryRadical Reactions

This learning unit describes the radical addition and radical substitution with alkenes. The mechanisms, thermodynamics, kinetics as well as the different reactivity and selectivity of several reagents and the special characterisitcs of benzylic and allylic positions are explained.