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Methanol → tert-butyl 2-{[1-(chloromethyl)-5-nitro-1,2-dihydro-3H-benzo[e]indol-7-yl]sulfonyl}hydrazinecarboxylate

HRID 2238376
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Reaktionsgleichung

Reaktionsgleichung von HRID 2238376
[C:1]([O:5][C:6]([CH3:9])([CH3:8])[CH3:7])(=[O:4])[NH:2][NH2:3].[Cl:10][CH2:11][CH:12]1[C:20]2[C:19]3[CH:21]=[CH:22][C:23]([S:25](Cl)(=[O:27])=[O:26])=[CH:24][C:18]=3[C:17]([N+:29]([O-:31])=[O:30])=[CH:16][C:15]=2[N:14](C(=O)C(F)(F)F)[CH2:13]1.C([O-])([O-])=O.[Cs+].[Cs+].CO>O>[Cl:10][CH2:11][CH:12]1[C:20]2[C:19]3[CH:21]=[CH:22][C:23]([S:25]([NH:3][NH:2][C:1]([O:5][C:6]([CH3:9])([CH3:8])[CH3:7])=[O:4])(=[O:26])=[O:27])=[CH:24][C:18]=3[C:17]([N+:29]([O-:31])=[O:30])=[CH:16][C:15]=2[NH:14][CH2:13]1
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Komponenten

6

Edukt 4

HCID 887MethanolHCID 10796Cesium carbonateHCID 70091tert-Butyl carbazateHCID 866202591-(chloromethyl)-5-nitro-3-(trifluoroacetyl)-1,2-dihydro-3H-benzo[e]indole-7-sulfonyl chloride

Produkt 1

HCID 68691139tert-butyl 2-{[1-(chloromethyl)-5-nitro-1,2-dihydro-3H-benzo[e]indol-7-yl]sulfonyl}hydrazinecarboxylateAusbeute 68,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

t-Butyl carbazate (86 mg, 0.65 mmol) was added to a solution of 116 (107 mg, 0.23 mmol) in ThF (5 mL) and the mixture was stirred at room temperature for 16 h. Cs2CO3 (150 mg, 0.46 mmol) and MeOH (2 mL) were added and the mixture was stirred for a further 2 h. The mixture was diluted with water and extracted with CH2Cl2 (×2). The combined extracts were dried and evaporated and the residue was purified by chromatography, eluting with EtOAc/petroleum ether (1:4 then 2:3). The product was recrystallised from EtOAc/petroleum ether to give tert-butyl 2-{[1-(chloromethyl)-5-nitro-1,2-dihydro-3H-benzo[e]indol-7-yl]sulfonyl}hydrazinecarboxylate (119) (72 mg, 67%) as an orange crystalline solid: mp 179° C. (dec.); 1H NMR [(CD3)2SO] δ 9.60 (br s, 1H), 9.18 (v br s, 1H), 8.54 (d, J=1.4 Hz, 1H), 8.00 (d, J=8.9 Hz, 1H), 7.75 (s, 1H), 7.74 (dd, J=8.9, 1.8 Hz, 1H), 6.74 (s, 1H), 4.29-4.22 (m, 1H), 3.94-3.85 (m, 2H), 3.80 (dd, J=11.0, 8.0 Hz, 1H), 3.74 (dd, J=10.5, 3.0 Hz, 1H), 1.10 (br s, 9H). HRMS (FAB) calcd. for C18H2135ClN4O6S (M+) m/z 456.0870, found 456.0877.

Aufarbeitung

  1. stirringthe mixture was stirred for a further 2 h
  2. extractionextracted with CH2Cl2 (×2)
  3. customThe combined extracts were dried
  4. customevaporated
  5. customthe residue was purified by chromatography
  6. washeluting with EtOAc/petroleum ether (1:4
  7. customThe product was recrystallised from EtOAc/petroleum ether

Quellen und Nachweise

ORD-Eintrag
ord-d54a4b4a90b24e599508d15c9f414994
Quelldatensatz
uspto-grants-2010_05
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07718688B2

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