Triphenylphosphine → Racemic (2R,5S,6S)-5-Amino-6-hydroxy-2-methyl-azepane-1-carboxylic acid benzyl ester

HRID 1790612

Reaktionsgleichung

C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.[CH2:20]([O:27][C:28]([N:30]1[CH2:36][CH:35]([OH:37])[CH:34]([N:38]=[N+]=[N-])[CH2:33][CH2:32][CH:31]1[CH3:41])=[O:29])[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1>C1COCC1.O.C1(C)C=CC=CC=1>[CH2:20]([O:27][C:28]([N:30]1[CH2:36][CH:35]([OH:37])[CH:34]([NH2:38])[CH2:33][CH2:32][CH:31]1[CH3:41])=[O:29])[C:21]1[CH:22]=[CH:23][CH:24]=[CH:25][CH:26]=1

Komponenten

Reaktionsbedingungen

Temperatur: 45 °C

Versuchsvorschrift

Triphenylphosphine (1.94 g, 7.4 mmol) was added to a solution of racemic (2R,5S,6S)-5-azido-6-hydroxy-2-methyl-azepane-1-carboxylic acid benzyl ester (1.5 g, 4.93 mmol) in THF (185 ml) and H2O (0.7 ml), then was heated to 45 degrees C. overnight. The reaction mixture was then diluted with toluene (100 ml×2) and was azeotroped in vacuo by rotary evaporation twice. The resulting oil was dissolved in MeOH and HCl in Et2O and the resulting salt was collected following filtration and was used in the next reaction without further purification (1.4 g, 90%).

Aufarbeitung

customovernight
customwas azeotroped in vacuo by rotary evaporation twice
dissolutionThe resulting oil was dissolved in MeOH
customHCl in Et2O and the resulting salt was collected
filtrationfiltration
customwas used in the next reaction without further purification (1.4 g, 90%)

Quellen und Nachweise

ORD-Eintrag: ord-43e157a4e81d43778d62ce7ac6bb9e65
Quelldatensatz: uspto-grants-2006_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US07071184B2

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