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Acetonitrile → HCID 57978119, Verbindung

HRID 2242326
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2242326
C1(C)C=CC(S(O)(=O)=O)=CC=1.[NH2:12][C@H:13]1[CH2:22][CH2:21][C:16]2([O:20][CH2:19][CH2:18][O:17]2)[CH2:15][C@H:14]1[C:23]([O:25][CH2:26][CH3:27])=[O:24].O.ON1C2C=CC=CC=2N=N1.[C:39]([NH:49][C@H:50]([C:55](O)=[O:56])[CH2:51][CH2:52][S:53][CH3:54])([O:41][CH2:42][C:43]1[CH:48]=[CH:47][CH:46]=[CH:45][CH:44]=1)=[O:40].C(#N)C>C(OCC)(=O)C.C(N(CC)CC)C>[CH2:42]([O:41][C:39]([NH:49][C@@H:50]([CH2:51][CH2:52][S:53][CH3:54])[C:55]([NH:12][C@H:13]1[CH2:22][CH2:21][C:16]2([O:20][CH2:19][CH2:18][O:17]2)[CH2:15][C@H:14]1[C:23]([O:25][CH2:26][CH3:27])=[O:24])=[O:56])=[O:40])[C:43]1[CH:44]=[CH:45][CH:46]=[CH:47][CH:48]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 4

HCID 6342AcetonitrileHCID 1550857Benzyloxycarbonyl-L-methionineHCID 27960291-Hydroxybenzotriazole hydrateHCID 57454058HCID 57454058, Verbindung

Produkt 1

HCID 57978119HCID 57978119, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8471
Triethylamine
Lösungsmittel
HCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

Example 1, Alternative Preparation, Step 1: Ethyl (7R,8S)-8-amino-1,4-dioxa-spiro[4.5]decane-7-carboxylate 4-toluenesulfonate salt 1 (450.1 g), was combined with 1-ethyl-3-(3-dimethyl-amino-propyl)carbo-diimide hydrochloride (236.3 g), 1-hydroxy benzotriazole hydrate (171.9 g), N-carbobenzyloxy-L-methionine (333.4 g) and acetonitrile (3.1 L). To the stirred mixture was added triethylamine (249.5 g) below 30° C. Upon reaction completion (HPLC), the mixture was diluted with ethyl acetate (8.2 L) and washed with aqueous 25% potassium bicarbonate solution (2×4.5 L) followed by water (4.5 L). The organic phase was separated and concentrated under reduced pressure to obtain a solution of ethyl (7R,8S)-8-((S)-2-benzyloxycarbonylamino-4-methylsulfanyl-butyrylamino)-1,4-dioxa-spiro[4.5]decane-7-carboxylate 2 (1.4 L). Methyl iodide (2.39 kg) was added, the vessel was shielded from light and the mixture was held under slow agitation for approx. 24 h. To the thick yellow precipitate was added methyl tert-butyl ether (2.7 L) and the mixture was held for approx. 1 h. The product was isolated by filtration and the cake was washed with methyl tert-butyl ether (2×1.4 L), then dried under vacuum, yielding [(S)-3-benzyloxy-carbonylamino-3-((7R,8S)-7-ethoxycarbonyl-1,4-dioxa-spiro[4.5]dec-8-ylcarbamoyl)-propyl]-dimethylsulfonium iodide 3 (671.4 g, ˜94% yield) as an off-white solid (HPLC purity 99.9%).

Aufarbeitung

  1. customExample 1, Alternative Preparation, Step 1
  2. customUpon reaction completion (HPLC)
  3. washwashed with aqueous 25% potassium bicarbonate solution (2×4.5 L)
  4. customThe organic phase was separated
  5. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-837cad8480aa44da8a0ab39508a10b6a
Quelldatensatz
uspto-grants-2010_03
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07671062B2

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