acetylacetonen.

Brit.

/ˌasᵻtʌɪlˈasᵻtəʊn/,

/ˌasᵻtɪlˈasᵻtəʊn/, U.S.

/əˌsidlˈæsəˌtoʊn/,

/ˌæsədlˈæsəˌtoʊn/

Origin: Formed within English, by compounding. Etymons: acetyl n., acetone n.

Etymology: < acetyl n. + acetone n. Compare French acétylacétone (A. Combes 1886, in Comptes Rendus hebd. de l'Acad. des Sci. 103 816), German Acetylaceton (1887 with reference to Combes).

Chemistry.

A pale yellow liquid diketone which readily forms coordination complexes with metals and is used as a solvent and as a reagent in organic and organometallic synthesis.Systematic name: 2,4-pentanedione; CH₃COCH₂COCH₃.

ΚΠ

1887 Chem. News 22 Apr. 188/2 The decomposition by potassa of the diacetones, homologues of acetylacetone, furnished a new method of producing the fatty acetones.

1927 Jrnl. Amer. Chem. Soc. 49 849 Acetylacetone may undergo keto-enol tautomerism.

1972 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 3) xxv. 850 The dark brown crystalline acetylacetonate, Mn(acac)₃, is readily obtained by oxidation of basic solutions of Mn²⁺ by air or chlorine in the presence of acetylacetone.

2002 Jrnl. Amer. Inst. Conservation 41 81 Acetylacetone and acetone are among the fastest-acting solvents.

This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021).

单词	acetylacetone
释义	acetylacetonen. Brit. /ˌasᵻtʌɪlˈasᵻtəʊn/, /ˌasᵻtɪlˈasᵻtəʊn/, U.S. /əˌsidlˈæsəˌtoʊn/, /ˌæsədlˈæsəˌtoʊn/ Origin: Formed within English, by compounding. Etymons: acetyl n., acetone n. Etymology: < acetyl n. + acetone n. Compare French acétylacétone (A. Combes 1886, in Comptes Rendus hebd. de l'Acad. des Sci. 103 816), German Acetylaceton (1887 with reference to Combes). Chemistry. A pale yellow liquid diketone which readily forms coordination complexes with metals and is used as a solvent and as a reagent in organic and organometallic synthesis.Systematic name: 2,4-pentanedione; CH₃COCH₂COCH₃. ΚΠ 1887 Chem. News 22 Apr. 188/2 The decomposition by potassa of the diacetones, homologues of acetylacetone, furnished a new method of producing the fatty acetones. 1927 Jrnl. Amer. Chem. Soc. 49 849 Acetylacetone may undergo keto-enol tautomerism. 1972 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 3) xxv. 850 The dark brown crystalline acetylacetonate, Mn(acac)₃, is readily obtained by oxidation of basic solutions of Mn²⁺ by air or chlorine in the presence of acetylacetone. 2002 Jrnl. Amer. Inst. Conservation 41 81 Acetylacetone and acetone are among the fastest-acting solvents. This entry has been updated (OED Third Edition, September 2009; most recently modified version published online December 2021). < n.1887
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