Claisen rearrangement

noun

A powerful carbon–carbon bond-forming chemical reaction, in which the heating of an allyl vinyl ether initiates a [3,3]-sigmatropic rearrangement to give a γ,δ-unsaturated carbonyl.

Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounClaisen rearrangement (plural Claisen rearrangements)

plural Claisen rearrangements

  1. chemistryA powerful carbon–carbon bond-forming chemical reaction, in which the heating of an allyl vinyl ether initiates a [3,3]-sigmatropic rearrangement to give a γ,δ-unsaturated carbonyl.

Origin

Discovered by German chemist Rainer Ludwig Claisen.

Full word history & related roots →
Cite this entry
APA

Claisen rearrangement. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Claisen%20rearrangement

MLA

“Claisen rearrangement.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Claisen%20rearrangement. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Claisen rearrangement,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Claisen%20rearrangement.

Source: Claisen rearrangement on Wiktionary, CC BY-SA 4.0.