Ammonia → tetrahydrocyclopenta[c]pyrrole-1,3(2H,3aH)-dione

HRID 1848329Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1848329
[CH:1]1([C:11]([O:13]CC)=O)[CH2:5][CH2:4][CH2:3][CH:2]1[C:6](OCC)=[O:7].[NH3:16]>>[C:6]1(=[O:7])[CH:2]2[CH2:3][CH2:4][CH2:5][CH:1]2[C:11](=[O:13])[NH:16]1

Komponenten

3

Edukt 2

HCID 222AmmoniaHCID 3021700Diethyl cyclopentane-1,2-dicarboxylate

Produkt 1

HCID 110709tetrahydrocyclopenta[c]pyrrole-1,3(2H,3aH)-dioneAusbeute 96 %

Reaktionsbedingungen

Temperatur
130 °C

Versuchsvorschrift

Load 1 kg of diethyl 1,2-cyclopentanedicarboxylate and 1.02 kg of 27% ammonia into an autoclave. The reaction mixture is heated in the autoclave at a temperature of 130° C. for a minimum of 4 hours. After cooling to 60° C. and depressurisation, evaporation of the solvent is carried out. The residue is then subjected to pyrolysis at 280° C. for 1 hour. The imide is purified by distillation in vacuo (4-12 mbars) at a temperature of 200° C. After isolation, the title product is obtained in a yield of 96%.

Aufarbeitung

  1. temperatureAfter cooling to 60° C.
  2. customdepressurisation, evaporation of the solvent
  3. distillationThe imide is purified by distillation in vacuo (4-12 mbars) at a temperature of 200° C

Quellen und Nachweise

ORD-Eintrag
ord-fde39f7d77ab4ebc823834d522b6e434
Quelldatensatz
uspto-grants-2015_02
Patentnummer
US08952179B2

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