Butyric Acid → 5-(4-Butyrylpiperazin-1-yl)carbonyloxy-6-(7-chloro-1,8-naphthyridin-2-yl)-7-oxo-2,3,6,7-tetrahydro-5H-1,4-dithiino[2,3-c]pyrrole

HRID 27083

Reaktionsgleichung

Reaktionsgleichung von HRID 27083
[C:1](O)(=[O:5])[CH2:2][CH2:3][CH3:4].[Cl:7][C:8]1[N:17]=[C:16]2[C:11]([CH:12]=[CH:13][C:14]([N:18]3[CH:22]([O:23][C:24]([N:26]4[CH2:31][CH2:30][NH:29][CH2:28][CH2:27]4)=[O:25])[C:21]4[S:32][CH2:33][CH2:34][S:35][C:20]=4[C:19]3=[O:36])=[N:15]2)=[CH:10][CH:9]=1.C1(N=C=NC2CCCCC2)CCCCC1>C(Cl)Cl>[C:1]([N:29]1[CH2:28][CH2:27][N:26]([C:24]([O:23][CH:22]2[N:18]([C:14]3[CH:13]=[CH:12][C:11]4[C:16](=[N:17][C:8]([Cl:7])=[CH:9][CH:10]=4)[N:15]=3)[C:19](=[O:36])[C:20]3[S:35][CH2:34][CH2:33][S:32][C:21]2=3)=[O:25])[CH2:31][CH2:30]1)(=[O:5])[CH2:2][CH2:3][CH3:4]

Komponenten

5

Edukt 3

HCID 264Butyric AcidHCID 10868DicyclohexylcarbodiimideHCID 3085171RP 35489

Produkt 1

HCID 137286275-(4-Butyrylpiperazin-1-yl)carbonyloxy-6-(7-chloro-1,8-naphthyridin-2-yl)-7-oxo-2,3,6,7-tetrahydro-5H-1,4-dithiino[2,3-c]pyrroleAusbeute 67,8 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
20 °C

Versuchsvorschrift

Butyric acid (0.71 g.) is added to a suspension of 6-(7-chloro-1,8-naphthyridin-2-yl)-7-oxo-5-(piperazin-1-yl)carbonyloxy-2,3,6,7-tetrahydro-5H-1,4-dithiino[2,3-c]pyrrole (2.50 g.) and N,N'-dicyclohexyl-carbodiimide (1.67 g.) in anhydrous methylene chloride (50 cc.) and the mixture is stirred for 1 hour at 20° C. After filtering off the dicyclohexylurea formed, washing with methylene chloride (15 cc.) and evaporating the solvent, the residue obtained (3.8 g.) is washed with boiling ethanol (35 cc.) and then recrystallised from a mixture of acetonitrile (110 cc.) and ethanol (11 cc.). 5-(4-Butyrylpiperazin-1-yl)carbonyloxy-6-(7-chloro-1,8-naphthyridin-2-yl)-7-oxo-2,3,6,7-tetrahydro-5H-1,4-dithiino[2,3-c]pyrrole (1.95 g.), which melts at 248° C., is thus obtained.

Aufarbeitung

  1. filtrationAfter filtering off the dicyclohexylurea
  2. customformed
  3. washwashing with methylene chloride (15 cc.)
  4. customevaporating the solvent
  5. customthe residue obtained (3.8 g.)
  6. washis washed with boiling ethanol (35 cc.)
  7. customrecrystallised from a mixture of acetonitrile (110 cc.) and ethanol (11 cc.)

Quellen und Nachweise

ORD-Eintrag
ord-156be8bfd6dc4e69a16089b33f19744f
Quelldatensatz
uspto-grants-1980_09
Patentnummer
US04220646

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