Lawesson's reagent → ethyl (S)-11,12,13,13a-tetrahydro-9-thioxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylate

HRID 67523Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 67523
O=[C:2]1[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[N:6]2[CH:13]=[N:14][C:15]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[C:5]2[C@@H:4]2[CH2:21][CH2:22][CH2:23][N:3]12.COC1C=CC(P2(=S)SP(=S)(C3C=CC(OC)=CC=3)[S:33]2)=CC=1>C1(C)C=CC=CC=1>[S:33]=[C:2]1[C:8]2[CH:9]=[CH:10][CH:11]=[CH:12][C:7]=2[N:6]2[CH:13]=[N:14][C:15]([C:16]([O:18][CH2:19][CH3:20])=[O:17])=[C:5]2[C@@H:4]2[CH2:21][CH2:22][CH2:23][N:3]12

Komponenten

4

Edukt 2

HCID 87949Lawesson's reagentHCID 10041121Ethyl (7S)-12-oxo-2,4,11-triazatetracyclo[11.4.0.02,6.07,11]heptadeca-1(17),3,5,13,15-pentaene-5-carboxylate

Produkt 1

HCID 53734564ethyl (S)-11,12,13,13a-tetrahydro-9-thioxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 1140TolueneLösungsmittel

Versuchsvorschrift

A mixture of 5.0 g (0.0161 mol) of ethyl (S)-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylate and 3.46 g (0.0086 mol) of 2,4-bis(p-methoxyphenyl)-1,3,2,4-dithiadiphosphetane-2,4-disulphide is heated to boiling under reflux for 1.5 hours with 30 ml of toluene. This solution is chromatographed on silica gel using ethyl acetate for the elution. There is obtained ethyl (S)-11,12,13,13a-tetrahydro-9-thioxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][1,4]benzodiazepine-1-carboxylate which is recrystallised from 180 ml of ethyl acetate and then melts at 227°-229° C.

Aufarbeitung

  1. temperatureis heated
  2. customThis solution is chromatographed on silica gel
  3. washfor the elution

Quellen und Nachweise

ORD-Eintrag
ord-d3dfc9d74cb544f59d82617f69e06e19
Quelldatensatz
uspto-grants-1982_08
Patentnummer
US04346033

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