Chlorosulfonic acid → 3,4-Dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-sulfonyl chloride

HRID 1828671

Reaktionsgleichung

Reaktionsgleichung von HRID 1828671
[Na+].[OH:2][C:3]1[C:4]([S:20]([O-:23])(=O)=[O:21])=[CH:5][C:6]2[C:7](=[O:19])[C:8]3[C:13]([C:14](=[O:18])[C:15]=2[C:16]=1[OH:17])=[CH:12][CH:11]=[CH:10][CH:9]=3.[Cl:24]S(O)(=O)=O>>[OH:2][C:3]1[C:4]([S:20]([Cl:24])(=[O:23])=[O:21])=[CH:5][C:6]2[C:7](=[O:19])[C:8]3[C:13]([C:14](=[O:18])[C:15]=2[C:16]=1[OH:17])=[CH:12][CH:11]=[CH:10][CH:9]=3

Komponenten

3

Edukt 2

HCID 24638Chlorosulfonic acidHCID 3955344Sodium alizarinesulfonate

Produkt 1

HCID 220262163,4-Dihydroxy-9,10-dioxo-9,10-dihydroanthracene-2-sulfonyl chlorideAusbeute 66 %

Reaktionsbedingungen

Temperatur
90 °C

Versuchsvorschrift

3,4-dihydroxy-9,10-dioxo-2-anthracenesulfonic acid sodium salt (1.4 g, 3.9 mmoles) was combined with 30 mL of chlorosulfonic acid and heated to 90° C. for 5 hours, after which the solution was cooled to 0° C. and poured into 100 g of ice. After the ice melted the solution was extracted with CH2Cl2 (3×100 mL), methylene chloride extracts were combined, dried with Na2SO4 and evaporated to produce 0.87 g of solid (Yield 66%).

Aufarbeitung

  1. temperatureafter which the solution was cooled to 0° C.
  2. extractionwas extracted with CH2Cl2 (3×100 mL), methylene chloride extracts
  3. dry with materialdried with Na2SO4
  4. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-930598a4828e4e56a9b2bc7cb3e649da
Quelldatensatz
uspto-grants-2006_06
Patentnummer
US07060503B2

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