Darzens halogenation

noun

The chemical synthesis of alkyl halides from alcohols via the treatment upon reflux of a large excess of thionyl chloride or bromide (SOX₂) in the presence of a small amount of a nitrogen base, such as a tertiary amine or pyridine or its corresponding hydrochloride or hydrobromide salt.

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Meanings

nounDarzens halogenation (uncountable)
  1. uncountablechemistryThe chemical synthesis of alkyl halides from alcohols via the treatment upon reflux of a large excess of thionyl chloride or bromide (SOX₂) in the presence of a small amount of a nitrogen base, such as a tertiary amine or pyridine or its corresponding hydrochloride or hydrobromide salt.

Origin

Discovered in 1911 by Auguste George Darzens.

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Cite this entry
APA

Darzens halogenation. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Darzens%20halogenation

MLA

“Darzens halogenation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Darzens%20halogenation. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Darzens halogenation,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Darzens%20halogenation.

Source: Darzens halogenation on Wiktionary, CC BY-SA 4.0.