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(+)(2aR,4S)-l-benzoyl-6-iodo-4-(di-n-propylamino)-1,2,2a,3,4,5-hexahydrobenz[cd]indole → (2aR,4S)-1-benzoyl-6-(2-oxazolyl)-4-(di-n-propylamino)-1,2,2a,3,4, 5-hexahydrobenz[cd]indole

HRID 265258
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 265258
C([Sn](CCCC)(CCCC)[C:6]1[O:7][CH:8]=[CH:9][N:10]=1)CCC.[C:19]([N:27]1[C:35]2[CH:34]=[CH:33][C:32](I)=[C:31]3[CH2:37][C@@H:38]([N:40]([CH2:44][CH2:45][CH3:46])[CH2:41][CH2:42][CH3:43])[CH2:39][C@H:29]([C:30]=23)[CH2:28]1)(=[O:26])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>C1(C)C=CC=CC=1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[C:19]([N:27]1[C:35]2[CH:34]=[CH:33][C:32]([C:6]3[O:7][CH:8]=[CH:9][N:10]=3)=[C:31]3[CH2:37][C@@H:38]([N:40]([CH2:44][CH2:45][CH3:46])[CH2:41][CH2:42][CH3:43])[CH2:39][C@H:29]([C:30]=23)[CH2:28]1)(=[O:26])[C:20]1[CH:21]=[CH:22][CH:23]=[CH:24][CH:25]=1
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Komponenten

5

Edukt 2

HCID 9805495(+)(2aR,4S)-l-benzoyl-6-iodo-4-(di-n-propylamino)-1,2,2a,3,4,5-hexahydrobenz[cd]indoleHCID 154861832-(Tri-n-butylstannyl)oxazole

Produkt 1

HCID 15777987(2aR,4S)-1-benzoyl-6-(2-oxazolyl)-4-(di-n-propylamino)-1,2,2a,3,4, 5-hexahydrobenz[cd]indoleAusbeute 67,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 178418397
HCID 178418397, Verbindung
Katalysator
HCID 1140TolueneLösungsmittel

Versuchsvorschrift

A solution of 5.0 g (13.8 mmol) of the crude 2-tributylstannyloxazole prepared above and 6.8 g (13.9 mmol) of (+)(2aR,4S)-1-benzoyl-6-iodo-4-(di-n-propylamino)-1,2,2a,3,4,5-hexahydrobenz[cd]indole in 100 ml of toluene was treated with 0.7 g (0.6 mmol) of tetrakis(triphenylphosphine)palladium then refluxed under nitrogen for 20 hours. After cooling the reaction mixture was washed with a saturated brine solution and then dried over Na2SO4. Concentration in vacuo provided a viscous oil which was chromatographed over a silica gel column using a solvent gradient progressing from toluene to 1:1 toluene/EtOAc. The product from the column was dissolved in 1M HCl. This solution was then washed with ether, made alkaline with 5M NaOH, and extracted with CH2Cl2. Concentration of the extract in vacuo gave about 4 g of a brown oil. When this oil was dissolved in pentane a small amount of a red/brown resin separated leaving a clear, yellow solution. The resin was separated and the pentane was evaporated to provide a residue. This residue was crystallized by dissolving it in a small amount of CH2Cl2 and slowly adding isoctane. The crystalline (-)(2aR,4S)-1-benzoyl-6-(2-oxazolyl)-4-(di-n-propylamino)-1,2,2a,3,4,5-hexahydrobenz[cd]indole, obtained in four crops, weighed 2.63 g. mp 103°-104° C.

Aufarbeitung

  1. temperaturethen refluxed under nitrogen for 20 hours
  2. temperatureAfter cooling the reaction mixture
  3. washwas washed with a saturated brine solution
  4. dry with materialdried over Na2SO4
  5. concentrationConcentration in vacuo
  6. customprovided a viscous oil which
  7. customwas chromatographed over a silica gel column
  8. dissolutionThe product from the column was dissolved in 1M HCl
  9. washThis solution was then washed with ether
  10. extractionextracted with CH2Cl2
  11. extractionConcentration of the extract in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-e0dc113ea1f44df99886e5bbd6899ee4
Quelldatensatz
uspto-grants-1997_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US05648356

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