Reaktion #427359

Reaktionsgleichung

bicarbonate

tert-butyl {(5R,6S,8S)-5-methyl-6-phenyl-3-[1-(trifluoromethyl)cyclopropyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-yl}carbamate

trifluoroacetic acid

→

title compound

Ausbeute 36.4%

(5R,6S,8S)-5-Methyl-6-phenyl-3-[1-(trifluoromethyl)cyclopropyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-amine

Ausbeute 36.4%

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Extraktionthe resulting mixture was extracted with ethyl acetate (3×)
2. 2
   WaschenThe combined organic extracts were washed with brine
3. 3
   Trocknendried over magnesium sulfate
4. 4
   Filtrationfiltered
5. 5
   Einengenconcentrated
6. 6
   SonstigePurification by reverse chromatography (C-18, 95% water/acetonitrile 25% water/acetonitrile with 0.1% trifluoroacetic acid)

Vorschrift

To a solution of crude tert-butyl {(5R,6S,8S)-5-methyl-6-phenyl-3-[1-(trifluoromethyl)cyclopropyl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-yl}carbamate (136 mg, 0.31 mmol) in dichloromethane (3.1 mL) was added trifluoroacetic acid (721 μL, 9.4 mmol) and the resulting mixture stirred 30 min. Saturated aqueous bicarbonate was added, and the resulting mixture was extracted with ethyl acetate (3×). The combined organic extracts were washed with brine, dried over magnesium sulfate, filtered and concentrated. Purification by reverse chromatography (C-18, 95% water/acetonitrile 25% water/acetonitrile with 0.1% trifluoroacetic acid) gave the title compound (38 mg). MS 337.2 (M+1).

Quelle