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Subject - Organic Chemistry
Description of the mechanism of an elimination reaction. Contrary to eliminations in which the leaving group is eliminated first and a proton is subsequently abstracted in the second step, eliminations are synchronized, i.e. both groups depart simultaneously. An example for this reaction type is the dehydrohalogenation of halogen alkanes.
As a rule, eliminations proceed stereospecifically in an anti fashion, i.e. the groups to be eliminated occupy an anti periplanar conformation