Dicyclohexylcarbodiimide → (R)-quinuclidin-3-yl 2-phenyl-2-(o-tolylamino)acetate

HRID 76982

Reaktionsgleichung

Reaktionsgleichung von HRID 76982
C1CCC(N=C=NC2CCCCC2)CC1.Cl.[C:17]1([CH:23]([NH:27][C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=2[CH3:34])[C:24]([OH:26])=[O:25])[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.C1C=CC2N(O)N=NC=2C=1.[N:45]12[CH2:52][CH2:51][CH:48]([CH2:49][CH2:50]1)[C@@H:47](O)[CH2:46]2>C1COCC1>[N:45]12[CH2:52][CH2:51][CH:48]([CH2:49][CH2:50]1)[C@@H:47]([O:25][C:24](=[O:26])[CH:23]([C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1)[NH:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][C:29]=1[CH3:34])[CH2:46]2

Komponenten

6

Edukt 4

HCID 10868DicyclohexylcarbodiimideHCID 757711-HydroxybenzotriazoleHCID 914043-Quinuclidinol, (-)-HCID 67124826Phenyl-o-methylphenylamino-acetic acid hydrochloride

Produkt 1

HCID 46840573(R)-quinuclidin-3-yl 2-phenyl-2-(o-tolylamino)acetateAusbeute 103 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

PS-DCC (1.15 g, 1.44 mmol, loading: 1.25 mmol/g) is suspended in THF (15 mL). Phenyl-o-methylphenylamino-acetic acid hydrochloride (I38) (200 mg, 0.72 mmol) and HOBT (221 mg, 1.44 mmol) are added, followed by (R)-quinuclidin-3-ol (275 mg, 2.16 mmol) and the mixture is shaken for 16 hours at RT. PS-DCC is filtered off and the filtrate is evaporated. The resulting residue is dissolved in EtOAc and washed sequentially with water, sat. NaHCO3, water and brine. The organic layer is dried over Na2SO4, filtered and evaporated to give the title compound as a colorless oil (260 mg, quantitative yield, mixture of diastereoisomers).

Aufarbeitung

  1. filtrationPS-DCC is filtered off
  2. customthe filtrate is evaporated
  3. dissolutionThe resulting residue is dissolved in EtOAc
  4. washwashed sequentially with water, sat. NaHCO3, water and brine
  5. dry with materialThe organic layer is dried over Na2SO4
  6. filtrationfiltered
  7. customevaporated

Quellen und Nachweise

ORD-Eintrag
ord-fa2f4e8b8cfa400a9064e04cb8dbcc6a
Quelldatensatz
uspto-grants-2014_09
Patentnummer
US08835682B2

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