Reaktion #325975

Reaktionsgleichung

N-(2-cyano-1,1-bis(3-(trifluoromethoxy)phenyl)ethyl)-4-fluoro-3-(trifluoromethyl)benzamide

TMSN3

TBAF

→

N-(2-cyano-1,1-bis(3-(trifluoromethoxy)phenyl)ethyl)-4-fluoro-3-(trifluoromethyl)benzamide

N-(2-(2H-tetrazol-5-yl)-1,1-bis(3-(trifluoromethoxy)phenyl)ethyl)-4-fluoro-3-(trifluoromethyl)benzamide

Ausbeute 72.0%

Lösungsmittel

CH2Cl2

Reaktionsbedingungen

Aufarbeitung

1. 1
   WaschenLCMS: RT=4.04 min [M+H] 581.16 (Phenomenex Luna C18 column, 4.6×50 mm eluting with 10-90% MeOH/H2O over 4 minutes containing 0.1% TFA; 4 mL/min, monitoring at 220 nm)
2. 2
   Temperaturto cool to rt
3. 3
   Sonstigepurified by ISCO flash chromatography (silica gel, CH2Cl2/MeOH)

Vorschrift

N-(2-cyano-1,1-bis(3-(trifluoromethoxy)phenyl)ethyl)-4-fluoro-3-(trifluoromethyl)benzamide was prepared as described in Procedure 11, 18, 6 and 7. LCMS: RT=4.04 min [M+H] 581.16 (Phenomenex Luna C18 column, 4.6×50 mm eluting with 10-90% MeOH/H2O over 4 minutes containing 0.1% TFA; 4 mL/min, monitoring at 220 nm). A mixture of N-(2-cyano-1,1-bis(3-(trifluoromethoxy)phenyl)ethyl)-4-fluoro-3-(trifluoromethyl)benzamide (70 mg, 0.12 mmol), TMSN3 (0.025 ml. 1.6 eq) and TBAF.3H2O (19 mg, 0.5 eq) was heated in a sealed tube at 110° C. for 24 h. After allowing to cool to rt, the residue was dissolved in CH2Cl2, and purified by ISCO flash chromatography (silica gel, CH2Cl2/MeOH) to give N-(2-(2H-tetrazol-5-yl)-1,1-bis(3-(trifluoromethoxy)phenyl)ethyl)-4-fluoro-3-(trifluoromethyl)benzamide (Example 280, 54 mg, yield: 72%). LCMS: RT=3.91 min [M+H] 624.06, [M+Na] 647.06 (Phenomenex Luna C18 column, 4.6×50 mm eluting with 10-90% MeOH/H2O over 4 minutes containing 0.1% TFA; 4 mL/min, monitoring at 220 nm).

Quelle