Triethylamine → N-(tert-Butoxycarbonyl)-L-tryptophyl-L-methioninamide

HRID 371354Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 371354
[NH2:1][C@H:2]([C:7]([NH2:9])=[O:8])[CH2:3][CH2:4][S:5][CH3:6].C(N(CC)CC)C.[NH:17]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[C@H:18]([C:29](ON1C(=O)CCC1=O)=[O:30])[CH2:19][C:20]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=2)[NH:22][CH:21]=1>CN(C=O)C>[NH:17]([C:39]([O:41][C:42]([CH3:45])([CH3:44])[CH3:43])=[O:40])[C@H:18]([C:29]([NH:1][C@H:2]([C:7]([NH2:9])=[O:8])[CH2:3][CH2:4][S:5][CH3:6])=[O:30])[CH2:19][C:20]1[C:28]2[C:23](=[CH:24][CH:25]=[CH:26][CH:27]=2)[NH:22][CH:21]=1

Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 98767Boc-Trp-OSuHCID 146480L-Methioninamide

Produkt 1

HCID 13306577N-(tert-Butoxycarbonyl)-L-tryptophyl-L-methioninamideAusbeute 73,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

5.78 g (0.039 mole) of H-Met-NH2 was dissolved in 50 ml of DMF, then 5.46 ml of triethylamine and further 18.70 g (0.047 mole) of Boc-Trp-OSu were added under cooling with ice, and the mixture was stirred overnight at room temperature. The reaction mixture was concentrated in vacuo, and extracted with ethyl acetate. The extract was washed with 1N citric acid, saturated saline solution, saturated sodium bicarbonate solution, and saturated saline solution in series. The resulting organic layer was dried over anhydrous sodium sulfate, distilled in vacuo to remove the solvent, and solidified with hexane. The solid was recrystallized from ethyl acetate-hexane, giving 12.45 g of Boc-Trp-Met-NH2 ; yield 73.5%, m.p. 155°-157° C.

Aufarbeitung

  1. temperatureunder cooling with ice
  2. concentrationThe reaction mixture was concentrated in vacuo
  3. extractionextracted with ethyl acetate
  4. washThe extract was washed with 1N citric acid, saturated saline solution, saturated sodium bicarbonate solution, and saturated saline solution in series
  5. dry with materialThe resulting organic layer was dried over anhydrous sodium sulfate
  6. distillationdistilled in vacuo
  7. customto remove the solvent
  8. customThe solid was recrystallized from ethyl acetate-hexane

Quellen und Nachweise

ORD-Eintrag
ord-b6b89f651926450dbad031efbd8b183c
Quelldatensatz
uspto-grants-1985_07
Patentnummer
US04530836

Notizen zur Reaktion

Wird geladen…