Hydrochloric Acid → (S)-8-chloro-9-oxo-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-thiocarboxamide

HRID 867541Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 867541
[Cl:1][C:2]1[C:7]2[C:8](=[O:21])[N:9]3[CH2:20][CH2:19][CH2:18][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16]#[N:17])[C:6]=2[CH:5]=[CH:4][CH:3]=1.C(N)(=[S:24])C.Cl.[OH-].[Na+]>O.CN(C)C=O>[Cl:1][C:2]1[C:7]2[C:8](=[O:21])[N:9]3[CH2:20][CH2:19][CH2:18][C@H:10]3[C:11]3[N:12]([CH:13]=[N:14][C:15]=3[C:16](=[S:24])[NH2:17])[C:6]=2[CH:5]=[CH:4][CH:3]=1

Komponenten

7

Edukt 4

HCID 313Hydrochloric AcidHCID 14798Sodium HydroxideHCID 2723949ThioacetamideHCID 54287641(S)-8-chloro-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carbonitrile

Produkt 1

HCID 53664939(S)-8-chloro-9-oxo-11,12,13,13a-tetrahydro-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-thiocarboxamide

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

20.0 g (67 mmol) of (S)-8-chloro-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carbonitrile and 10.06 g (134 mmol) of thioacetamide are heated to 90° together with 100 ml of dry N,N-dimethylformamide, whereupon the mixture is saturated with dry hydrogen chloride at this temperature for 5 hours. The mixture is cooled to room temperature and poured into 2.5 l of water. The mixture is neutralized to pH 7 with sodium hydroxide solution and the precipitated product is filtered off under suction. The material on the suction filter is taken up in methylene chloride, insoluble material is filtered off and the filtrate is washed with water, dried over magnesium sulphate and concentrated in half. By suction filtration and recrystallization from ethyl acetate there is obtained (S)-8-chloro-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carbothioamide of melting point 247°-248°.

Aufarbeitung

  1. filtrationthe precipitated product is filtered off under suction
  2. filtrationThe material on the suction filter
  3. filtrationinsoluble material is filtered off
  4. washthe filtrate is washed with water
  5. dry with materialdried over magnesium sulphate
  6. concentrationconcentrated in half
  7. filtrationBy suction filtration and recrystallization from ethyl acetate

Quellen und Nachweise

ORD-Eintrag
ord-010ef6def8a042bbb7fd7fb782719940
Quelldatensatz
uspto-grants-1988_10
Patentnummer
US04775671

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