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1,1'-Carbonyldiimidazole → tert-butyl [(1R,2S)-2-ethenyl-1-{[(1-methylcyclopropyl)sulfonyl]carbamoyl}cyclopropyl]carbamate

HRID 1481641
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1481641
[C:1]([O:5][C:6]([NH:8][C@:9]1([C:14]([OH:16])=O)[CH2:11][C@H:10]1[CH:12]=[CH2:13])=[O:7])([CH3:4])([CH3:3])[CH3:2].C1N=CN(C(N2C=NC=C2)=O)C=1.[CH3:29][C:30]1([S:33]([NH2:36])(=[O:35])=[O:34])[CH2:32][CH2:31]1.C1CCN2C(=NCCC2)CC1>C1COCC1>[C:1]([O:5][C:6](=[O:7])[NH:8][C@:9]1([C:14](=[O:16])[NH:36][S:33]([C:30]2([CH3:29])[CH2:32][CH2:31]2)(=[O:35])=[O:34])[CH2:11][C@H:10]1[CH:12]=[CH2:13])([CH3:2])([CH3:3])[CH3:4]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

6

Edukt 4

HCID 682631,1'-CarbonyldiimidazoleHCID 811841,8-Diazabicyclo(5.4.0)undec-7-eneHCID 10376443(1R,2S)-1-(((1,1-Dimethylethoxy)carbonyl)amino)-2-ethenylcyclopropanecarboxylic acidHCID 218898141-Methylcyclopropane-1-sulfonamide

Produkt 1

HCID 56605353tert-butyl [(1R,2S)-2-ethenyl-1-{[(1-methylcyclopropyl)sulfonyl]carbamoyl}cyclopropyl]carbamate
Ausbeute 58,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
85 °C

Versuchsvorschrift

To a solution of (1R,2S)-1-(tert-butoxycarbonylamino)-2-vinylcyclopropanecarboxylic acid (25 g, 110 mmol) in THF (300 mL) was added CDI (205 g, 127 mmol) and the reaction mass was heated at 85° C. for 1 h. The reaction mass was cooled to rt and to this reaction mass was added 1-methylcyclopropane-1-sulfonamide (17.7 g, 131 mmol) followed by DBU (33.2 mL, 33.5 mmol). The reaction mixture was stirred at rt for 18 h. The solvent was evaporated under reduced pressure and the residue was diluted with water and acidified to pH˜2 by using aq. 1.5 N HCl solution. The precipitated solid was isolated via filtration and washed with water to get desired compound (22 g, 58%) as off-white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 11.01-11.17 (m, 1H), 7.17-7.33 (m, 1H), 5.35-5.51 (m, 1H), 5.18-5.29 (m, 1H), 4.99-5.09 (m, 1H), 2.21 (s, 1H), 1.69 (dd, J=7.78, 5.27 Hz, 1H), 1.40 (d, J=3.01 Hz, 14H), 1.20 (dd, J=9.29, 5.27 Hz, 1H), 0.82-0.96 (m, 2H). MS: MS m/z 343 (M++1).

Aufarbeitung

  1. temperatureThe reaction mass was cooled to rt and to this reaction mass
  2. customThe solvent was evaporated under reduced pressure
  3. additionthe residue was diluted with water
  4. customThe precipitated solid was isolated via filtration
  5. washwashed with water

Quellen und Nachweise

ORD-Eintrag
ord-35dbc0688652479292e2cf8e7b0beaa7
Quelldatensatz
uspto-grants-2016_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US09409943B2

Notizen zur Reaktion

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