Sodium Bicarbonate → HCID 22258010, Verbindung

HRID 1251579Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1251579
[BH4-].[Na+].[NH2:3][C:4]1[S:5][C:6]([CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:7][C:8]=1[C:9]([O:11][CH2:12][CH3:13])=[O:10].C(=O)(O)[O-].[Na+]>CC(C)C(O)=O.O>[CH3:4][CH:8]([CH3:9])[CH2:7][NH:3][C:4]1[S:5][C:6]([CH2:14][C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:7][C:8]=1[C:9]([O:11][CH2:12][CH3:13])=[O:10]

Komponenten

6

Edukt 3

HCID 516892Sodium BicarbonateHCID 3792137Ethyl 2-amino-5-benzylthiophene-3-carboxylateHCID 4311764Sodium borohydride

Produkt 1

HCID 22258010HCID 22258010, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6590Isobutyric AcidLösungsmittel

Versuchsvorschrift

Sodium borohydride (3.0 g) was added in 6 portions over 3 hours to a stirred solution of ethyl 2-amino-5-(phenylmethyl)thiophene-3-carboxylate in 2-methylpropanoic acid under nitrogen. The mixture was stirred at room temperature for 20 hours and was then diluted with water, neutralized with sodium bicarbonate and extracted with ethyl acetate four times. The organic extracts were dried over anhydrous magnesium sulfate, filtered and evaporated under reduced pressure. The residue was purified by column chromatography, eluting with diethyl ether:isohexane (1:19) to give the subtitle compound (2.80 g).

Aufarbeitung

  1. extractionextracted with ethyl acetate four times
  2. dry with materialThe organic extracts were dried over anhydrous magnesium sulfate
  3. filtrationfiltered
  4. customevaporated under reduced pressure
  5. customThe residue was purified by column chromatography
  6. washeluting with diethyl ether:isohexane (1:19)

Quellen und Nachweise

ORD-Eintrag
ord-1eb0082c1b444b439aad8a07f95cb603
Quelldatensatz
uspto-grants-2002_01
Patentnummer
US06342502B1

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