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Cycloaddition

A cycloaddition is a chemical reaction between reactants with double bonds that get replaced by a ring structure. It is a pericyclic chemical reaction where "two or more unsaturated molecules (or parts of the same molecule) combine with the formation of a cyclic adduct in which there is a net reduction of the bond multiplicity."[1] It is a cyclization reaction: it makes new ring of atoms.

Cycloadditions are named by the basic size of the molecules that are being brought together. This would make the Diels–Alder reaction a [4 + 2]cycloaddition, and the 1,3-dipolar cycloaddition a [3 + 2]cycloaddition. This type of reaction is a non-polar addition reaction.

  1. International Union of Pure and Applied Chemistry. "Cycloaddition". Compendium of Chemical Terminology Internet edition.

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إضافة حلقية Arabic Cicloaddició Catalan Cykloadice Czech Cykloaddition Danish Cycloaddition German Cycloaddition English Cicloadición Spanish حلقه‌زایی FA Sykloadditio Finnish Cycloaddition French

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