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Hydrochloric Acid → (2R,5S)-2-Hydroxymethyl-5-(3-trifluoromethoxy-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester

HRID 1527347
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1527347
[F:1][C:2]([F:21])([F:20])[O:3][C:4]1[CH:5]=[C:6]([NH:10][C:11]([C@@H:13]2[CH2:17][CH2:16][C@H:15]([CH2:18][OH:19])[NH:14]2)=[O:12])[CH:7]=[CH:8][CH:9]=1.CCN(CC)CC.[CH2:29]([O:36][C:37](Cl)=[O:38])[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1.Cl>C(Cl)Cl>[CH2:29]([O:36][C:37]([N:14]1[C@H:13]([C:11](=[O:12])[NH:10][C:6]2[CH:7]=[CH:8][CH:9]=[C:4]([O:3][C:2]([F:20])([F:1])[F:21])[CH:5]=2)[CH2:17][CH2:16][C@@H:15]1[CH2:18][OH:19])=[O:38])[C:30]1[CH:35]=[CH:34][CH:33]=[CH:32][CH:31]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 8471TriethylamineHCID 10387Benzyl chloroformateHCID 71042622(2S,5R)-5-Hydroxymethyl-pyrrolidine-2-carboxylic acid (3-trifluoromethoxy-phenyl)-amide

Produkt 1

HCID 68284198(2R,5S)-2-Hydroxymethyl-5-(3-trifluoromethoxy-phenylcarbamoyl)-pyrrolidine-1-carboxylic acid benzyl ester

Reagenzien, Katalysatoren, Lösungsmittel

1
HCID 6344DichloromethaneLösungsmittel2×

Versuchsvorschrift

To a solution of (2S,5R)-5-hydroxymethyl-pyrrolidine-2-carboxylic acid (3-trifluoromethoxy-phenyl)-amide (797 mg, 2.62 mmol) (prepared as described in Scheme B3) in CH2Cl2 (10 mL) was added under nitrogen atmosphere Et3N (440 μl, 3.14 mmol) and benzylchloroformate (406 μl, 2.88 mmol) and the mixture was further stirred at RT overnight. CH2Cl2 and HCl 0.1N were added, the layers were separated and the aqueous one re-extracted with CH2Cl2. The crude organic extracts were washed with brine dried over Na2SO4, filtered and concentrated. The crude material was purified by flash column chromatography on silica gel (c-hexane/EtOAc gradient 100:0 to 1:1) to give the title compound. MS (LC-MS): 439 [M+H]+; tR (HPLC conditions b) 4.88 min.

Aufarbeitung

  1. customthe layers were separated
  2. extractionthe aqueous one re-extracted with CH2Cl2
  3. washThe crude organic extracts were washed with brine
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude material was purified by flash column chromatography on silica gel (c-hexane/EtOAc gradient 100:0 to 1:1)

Quellen und Nachweise

ORD-Eintrag
ord-826c15bd0185463680cfaaf822286702
Quelldatensatz
uspto-grants-2015_07
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09085555B2

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