(R)-sec-butylamine → 3-[2-((R)-sec-Butylamino)-3,4-dioxo-cyclobut-1-enylamino]-6-chloro-2-hydroxy-N-methoxy-N-methyl-benzenesulfonamide

HRID 2066015

Reaktionsgleichung

Reaktionsgleichung von HRID 2066015
[Cl:1][C:2]1[C:7]([S:8]([N:11]([O:13][CH3:14])[CH3:12])(=[O:10])=[O:9])=[C:6]([OH:15])[C:5]([NH:16][C:17]2[C:20](=O)[C:19](=[O:22])[C:18]=2[O:23]CC)=[CH:4][CH:3]=1.[NH2:26][C@@H:27]([CH2:29][CH3:30])[CH3:28]>C1COCC1>[C@H:27]([NH:26][C:20]1[C:19](=[O:22])[C:18](=[O:23])[C:17]=1[NH:16][C:5]1[C:6]([OH:15])=[C:7]([S:8]([N:11]([O:13][CH3:14])[CH3:12])(=[O:10])=[O:9])[C:2]([Cl:1])=[CH:3][CH:4]=1)([CH2:29][CH3:30])[CH3:28]

Komponenten

4

Edukt 2

HCID 2724537(R)-sec-butylamineHCID 568442936-chloro-3-(2-ethoxy-3,4-dioxo-cyclobut-1-enylamino)-2-hydroxy-N-methoxy-N-methyl-benzenesulfonamide2×

Produkt 1

HCID 446291473-[2-((R)-sec-Butylamino)-3,4-dioxo-cyclobut-1-enylamino]-6-chloro-2-hydroxy-N-methoxy-N-methyl-benzenesulfonamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

To a stirred solution of 6-chloro-3-(2-ethoxy-3,4-dioxo-cyclobut-1-enylamino)-2-hydroxy-N-methoxy-N-methyl-benzenesulfonamide (Intermediate A) (1 g, 2.56 mmol) in THF (20 ml) was added (R)-(−)-2-aminobutane (0.52 ml, 5.12 mmol). The reaction mixture was heated at 50° C. for 7 hours. The reaction mixture was concentrated in vacuo and dissolved in EtOAc. The EtOAc solution was washed with 1M HCl(aq) and brine. The EtOAc solution was dried (MgSO4) and concentrated in vacuo. The residue was crystallized from toluene to give a solid; [M+H]+ 418.2. 1H NMR (DMSO) 0.9 (3H, t, CH3), 1.2 (3H, d, CH3), 1.5 (2H, m), 3.0 (3H, s, CH3), 3.6 (3H, s, CH3), 4.0 (1H, m), 7.2 (1H, d), 8.1 (1H, d), 8.3 (1H, d), 9.4 (1H, s), 10.1 (1H, s).

Aufarbeitung

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. dissolutiondissolved in EtOAc
  3. washThe EtOAc solution was washed with 1M HCl(aq) and brine
  4. dry with materialThe EtOAc solution was dried (MgSO4)
  5. concentrationconcentrated in vacuo
  6. customThe residue was crystallized from toluene
  7. customto give a solid

Quellen und Nachweise

ORD-Eintrag
ord-74b53c6d2e804e918dc44b5b33fc53be
Quelldatensatz
uspto-grants-2012_10
Patentnummer
US08288588B2

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