Acetic Acid → 5-(3-Bromophenyl)-2-methoxy-5,6,6-trimethyl-5,6-dihydro-1,4,3-oxathiazine 4,4-dioxide

HRID 339869Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 339869
[Br:1][C:2]1[CH:3]=[C:4]([C:8]([S:14]([NH2:17])(=[O:16])=[O:15])([C:10]([OH:13])([CH3:12])[CH3:11])[CH3:9])[CH:5]=[CH:6][CH:7]=1.C(O)(=O)C.[CH3:22][O:23][C:24](OC)(OC)OC>>[Br:1][C:2]1[CH:3]=[C:4]([C:8]2([CH3:9])[C:10]([CH3:12])([CH3:11])[O:13][C:22]([O:23][CH3:24])=[N:17][S:14]2(=[O:15])=[O:16])[CH:5]=[CH:6][CH:7]=1

Komponenten

4

Edukt 3

HCID 176Acetic AcidHCID 74613Tetramethyl orthocarbonateHCID 682923112-(3-Bromophenyl)-3-hydroxy-3-methylbutane-2-sulfonamide

Produkt 1

HCID 683591715-(3-Bromophenyl)-2-methoxy-5,6,6-trimethyl-5,6-dihydro-1,4,3-oxathiazine 4,4-dioxide

Reaktionsbedingungen

Temperatur
100 °C

Versuchsvorschrift

A suspension of 1.10 g of 2-(3-bromophenyl)-3-hydroxy-3-methylbutane-2-sulfonamide in 10 ml of tetramethoxymethane was admixed with 2 ml of acetic acid and stirred at 100° C. for 5 hours. After the removal of the solvent under reduced pressure, the crude product was purified by means of normal phase chromatography using a Flashmaster with an n-heptane/ethyl acetate gradient. The product-containing fractions were combined and concentrated by rotary evaporation. This gave the product (0.61 g) with a molecular weight of 362.2 g/mol (C13H16BrNO4S).

Aufarbeitung

  1. customAfter the removal of the solvent under reduced pressure
  2. customthe crude product was purified by means of normal phase chromatography
  3. concentrationconcentrated by rotary evaporation

Quellen und Nachweise

ORD-Eintrag
ord-0d0210f4729a4b8b839554205c90af4d
Quelldatensatz
uspto-grants-2014_11
Patentnummer
US08895547B2

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