Squaric acid → HCID 178426355, Verbindung

HRID 485731

Reaktionsgleichung

Reaktionsgleichung von HRID 485731
[C:1]1(O)[C:5](=[O:6])[C:3](=O)[C:2]=1[OH:7].[NH2:9][CH:10]1[CH2:15][C:14]([CH3:17])([CH3:16])[NH:13][C:12]([CH3:19])([CH3:18])[CH2:11]1>C(O)(C)C>[CH3:16][C:14]1([CH3:17])[CH2:15][CH:10]([NH:9][C+:1]2[C:2]([O-:7])=[C:3]([NH:9][CH:10]3[CH2:11][C:12]([CH3:19])([CH3:18])[NH:13][C:14]([CH3:17])([CH3:16])[CH2:15]3)[C+:5]2[O-:6])[CH2:11][C:12]([CH3:19])([CH3:18])[NH:13]1

Komponenten

4

Edukt 2

HCID 17913Squaric acidHCID 375244-Amino-2,2,6,6-tetramethylpiperidine

Produkt 1

HCID 178426355HCID 178426355, VerbindungAusbeute 90,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 3776IsopropanolLösungsmittel

Versuchsvorschrift

In an autoclave, 114.0 g of quadratic acid (1.0 mole), 390.8 g of 4-amino-2,2,6,6-tetramethylpiperidine (2.5 moles), and 800 cc of isopropanol were heated for five hours to 140° C. and then for 15 hours to 210° C. After cooling, the solid was suctioned off and dried. The thusobtained crude product was eluted three times with boiling methanol, washed with cold methanol, and then exhaustively dried, yielding as the remainder 353.1 g of white crystals (yield: 90.4%, mp>400° C., decomposition).

Aufarbeitung

  1. temperatureAfter cooling
  2. customdried
  3. washwas eluted three times with boiling methanol
  4. washwashed with cold methanol
  5. customexhaustively dried

Quellen und Nachweise

ORD-Eintrag
ord-faed4478198f48718faf6c2e10510a16
Quelldatensatz
uspto-grants-1985_08
Patentnummer
US04537924

Verknüpfte Notizen

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