Water → {3-[4-(4-Azido-but-1-enyl)-5,6,7,8-tetrahydro-naphthalen-1-yloxy]-propyl}-carbamic acid tert-butyl ester

HRID 1644241Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1644241
[Br-].[N:2]([CH2:5][CH2:6][CH2:7][P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)=[N+:3]=[N-:4].[Li+].C[Si]([N-][Si](C)(C)C)(C)C.[C:37]([O:41][C:42](=[O:60])[NH:43][CH2:44][CH2:45][CH2:46][O:47][C:48]1[C:57]2[CH2:56][CH2:55][CH2:54][CH2:53][C:52]=2[C:51]([CH:58]=O)=[CH:50][CH:49]=1)([CH3:40])([CH3:39])[CH3:38].O>C1COCC1>[C:37]([O:41][C:42](=[O:60])[NH:43][CH2:44][CH2:45][CH2:46][O:47][C:48]1[C:57]2[CH2:56][CH2:55][CH2:54][CH2:53][C:52]=2[C:51]([CH:58]=[CH:7][CH2:6][CH2:5][N:2]=[N+:3]=[N-:4])=[CH:50][CH:49]=1)([CH3:40])([CH3:39])[CH3:38]

Komponenten

6

Edukt 4

HCID 962WaterHCID 2733832Lithium HexamethyldisilazideHCID 53362697(3-Azidopropyl)(triphenyl)phosphanium bromideHCID 57828234[3-(4-Formyl-5,6,7,8-tetrahydro-naphthalen-1-yloxy)-propyl]-carbamic acid tert-butyl ester

Produkt 1

HCID 76577162{3-[4-(4-Azido-but-1-enyl)-5,6,7,8-tetrahydro-naphthalen-1-yloxy]-propyl}-carbamic acid tert-butyl esterAusbeute 48,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

(3-Azido-propyl)-triphenylphosphonium bromide (112, 11.5 g, 27 mmol) was stirred with 100 mL of dry THF at −76° C. LiHMDS (0.5 M in toluene, 27 mL) was added and the mixture was stirred for 30 minutes. [3-(4-Formyl-5,6,7,8-tetrahydro-naphthalen-1-yloxy)-propyl]-carbamic acid tert-butyl ester (111, 6 g, 18 mmol) in 12 mL dry THF solution was introduced. The reaction mixture was stirred at this temperature for another 30 minutes, and slowly warmed to room temperature. The mixture was poured into water and extracted twice with ethyl acetate. The combined organic layers were washed with water and brine, dried over magnesium sulfate, filtered, concentrated, and purified by flash chromatography (0-25% EtOAc/Hexane) to give 3.5 g 113 {3-[4-(4-azido-but-1-enyl)-5,6,7,8-tetrahydro-naphthalen-1-yloxy]-propyl}-carbamic acid tert-butyl ester.

Aufarbeitung

  1. stirringThe reaction mixture was stirred at this temperature for another 30 minutes
  2. extractionextracted twice with ethyl acetate
  3. washThe combined organic layers were washed with water and brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated
  7. custompurified by flash chromatography (0-25% EtOAc/Hexane)

Quellen und Nachweise

ORD-Eintrag
ord-feb6951c34d641a1b5ac28d3cb18540e
Quelldatensatz
uspto-grants-2012_02
Patentnummer
US08124607B2

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